./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e7bb482b 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_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 2bf204635285748ea2bd88f763410b9afff54eeccde3aa0a970ff723633af9c2 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:38:02,581 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:38:02,724 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 22:38:02,730 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:38:02,732 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:38:02,778 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:38:02,779 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:38:02,780 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:38:02,782 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:38:02,788 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:38:02,790 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:38:02,791 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:38:02,791 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:38:02,794 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:38:02,794 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:38:02,795 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:38:02,796 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:38:02,796 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:38:02,797 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:38:02,798 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:38:02,798 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:38:02,799 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:38:02,800 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 22:38:02,801 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:38:02,801 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:38:02,802 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:38:02,802 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:38:02,804 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:38:02,804 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:38:02,805 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:38:02,806 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:38:02,807 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:38:02,807 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:38:02,808 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:38:02,808 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:38:02,808 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:38:02,809 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:38:02,809 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:38:02,810 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:38:02,810 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:38:02,810 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:38:02,812 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_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2bf204635285748ea2bd88f763410b9afff54eeccde3aa0a970ff723633af9c2 [2023-11-06 22:38:03,132 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:38:03,173 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:38:03,193 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:38:03,195 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:38:03,195 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:38:03,197 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c [2023-11-06 22:38:06,835 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:38:07,180 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:38:07,181 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c [2023-11-06 22:38:07,191 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/data/6cb230f95/2da2dbcea1274338871450cbc4080214/FLAG8ec0527a6 [2023-11-06 22:38:07,210 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/data/6cb230f95/2da2dbcea1274338871450cbc4080214 [2023-11-06 22:38:07,213 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:38:07,215 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:38:07,217 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:38:07,217 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:38:07,229 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:38:07,230 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:38:07" (1/1) ... [2023-11-06 22:38:07,231 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e1503ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:38:07, skipping insertion in model container [2023-11-06 22:38:07,232 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:38:07" (1/1) ... [2023-11-06 22:38:07,276 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:38:07,604 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:38:07,625 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:38:07,690 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:38:07,716 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:38:07,717 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:38:07 WrapperNode [2023-11-06 22:38:07,717 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:38:07,719 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:38:07,719 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:38:07,719 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:38:07,730 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:38:07" (1/1) ... [2023-11-06 22:38:07,756 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:38:07" (1/1) ... [2023-11-06 22:38:07,817 INFO L138 Inliner]: procedures = 25, calls = 42, calls flagged for inlining = 14, calls inlined = 18, statements flattened = 218 [2023-11-06 22:38:07,818 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:38:07,819 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:38:07,820 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:38:07,820 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:38:07,832 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:38:07" (1/1) ... [2023-11-06 22:38:07,833 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:38:07" (1/1) ... [2023-11-06 22:38:07,856 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:38:07" (1/1) ... [2023-11-06 22:38:07,857 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:38:07" (1/1) ... [2023-11-06 22:38:07,869 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:38:07" (1/1) ... [2023-11-06 22:38:07,893 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:38:07" (1/1) ... [2023-11-06 22:38:07,896 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:38:07" (1/1) ... [2023-11-06 22:38:07,914 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:38:07" (1/1) ... [2023-11-06 22:38:07,919 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:38:07,920 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:38:07,920 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:38:07,920 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:38:07,921 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:38:07" (1/1) ... [2023-11-06 22:38:07,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:38:07,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:38:07,982 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:38:08,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:38:08,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:38:08,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 22:38:08,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:38:08,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:38:08,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:38:08,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 22:38:08,037 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 22:38:08,037 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 22:38:08,038 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 22:38:08,038 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 22:38:08,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:38:08,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:38:08,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:38:08,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:38:08,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:38:08,045 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:38:08,206 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:38:08,209 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:38:09,004 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:38:09,025 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:38:09,025 INFO L302 CfgBuilder]: Removed 7 assume(true) statements. [2023-11-06 22:38:09,031 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:38:09 BoogieIcfgContainer [2023-11-06 22:38:09,031 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:38:09,034 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:38:09,035 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:38:09,038 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:38:09,039 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:38:07" (1/3) ... [2023-11-06 22:38:09,039 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@390cfe86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:38:09, skipping insertion in model container [2023-11-06 22:38:09,040 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:38:07" (2/3) ... [2023-11-06 22:38:09,040 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@390cfe86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:38:09, skipping insertion in model container [2023-11-06 22:38:09,040 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:38:09" (3/3) ... [2023-11-06 22:38:09,042 INFO L112 eAbstractionObserver]: Analyzing ICFG loop-tiling-eq.wvr.c [2023-11-06 22:38:09,050 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:38:09,059 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:38:09,059 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2023-11-06 22:38:09,059 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:38:09,185 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-06 22:38:09,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 328 places, 348 transitions, 710 flow [2023-11-06 22:38:09,391 INFO L124 PetriNetUnfolderBase]: 27/346 cut-off events. [2023-11-06 22:38:09,391 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:38:09,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 355 conditions, 346 events. 27/346 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 479 event pairs, 0 based on Foata normal form. 0/293 useless extension candidates. Maximal degree in co-relation 250. Up to 2 conditions per place. [2023-11-06 22:38:09,400 INFO L82 GeneralOperation]: Start removeDead. Operand has 328 places, 348 transitions, 710 flow [2023-11-06 22:38:09,411 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 300 places, 319 transitions, 650 flow [2023-11-06 22:38:09,415 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:38:09,428 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 300 places, 319 transitions, 650 flow [2023-11-06 22:38:09,431 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 300 places, 319 transitions, 650 flow [2023-11-06 22:38:09,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 300 places, 319 transitions, 650 flow [2023-11-06 22:38:09,514 INFO L124 PetriNetUnfolderBase]: 26/319 cut-off events. [2023-11-06 22:38:09,514 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:38:09,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 328 conditions, 319 events. 26/319 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 475 event pairs, 0 based on Foata normal form. 0/268 useless extension candidates. Maximal degree in co-relation 250. Up to 2 conditions per place. [2023-11-06 22:38:09,520 INFO L119 LiptonReduction]: Number of co-enabled transitions 2100 [2023-11-06 22:38:41,684 INFO L134 LiptonReduction]: Checked pairs total: 3793 [2023-11-06 22:38:41,684 INFO L136 LiptonReduction]: Total number of compositions: 383 [2023-11-06 22:38:41,704 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:38:41,712 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@99f6a99, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:38:41,713 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2023-11-06 22:38:41,715 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:38:41,715 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-06 22:38:41,715 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:38:41,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:38:41,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-06 22:38:41,717 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-06 22:38:41,723 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:38:41,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1281, now seen corresponding path program 1 times [2023-11-06 22:38:41,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:38:41,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243879152] [2023-11-06 22:38:41,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:38:41,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:38:41,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:38:41,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:38:41,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:38:41,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243879152] [2023-11-06 22:38:41,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243879152] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:38:41,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:38:41,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-06 22:38:41,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287168328] [2023-11-06 22:38:41,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:38:41,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:38:41,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:38:41,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:38:41,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:38:41,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 731 [2023-11-06 22:38:41,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 53 transitions, 118 flow. Second operand has 2 states, 2 states have (on average 324.5) internal successors, (649), 2 states have internal predecessors, (649), 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) [2023-11-06 22:38:41,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:38:41,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 731 [2023-11-06 22:38:41,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:38:42,174 INFO L124 PetriNetUnfolderBase]: 342/566 cut-off events. [2023-11-06 22:38:42,174 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2023-11-06 22:38:42,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1161 conditions, 566 events. 342/566 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 2449 event pairs, 240 based on Foata normal form. 0/282 useless extension candidates. Maximal degree in co-relation 978. Up to 563 conditions per place. [2023-11-06 22:38:42,183 INFO L140 encePairwiseOnDemand]: 725/731 looper letters, 45 selfloop transitions, 0 changer transitions 0/47 dead transitions. [2023-11-06 22:38:42,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 47 transitions, 196 flow [2023-11-06 22:38:42,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:38:42,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 22:38:42,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 699 transitions. [2023-11-06 22:38:42,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4781121751025992 [2023-11-06 22:38:42,211 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 699 transitions. [2023-11-06 22:38:42,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 699 transitions. [2023-11-06 22:38:42,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:38:42,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 699 transitions. [2023-11-06 22:38:42,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 349.5) internal successors, (699), 2 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:38:42,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 731.0) internal successors, (2193), 3 states have internal predecessors, (2193), 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) [2023-11-06 22:38:42,248 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 731.0) internal successors, (2193), 3 states have internal predecessors, (2193), 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) [2023-11-06 22:38:42,251 INFO L175 Difference]: Start difference. First operand has 53 places, 53 transitions, 118 flow. Second operand 2 states and 699 transitions. [2023-11-06 22:38:42,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 47 transitions, 196 flow [2023-11-06 22:38:42,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 47 transitions, 188 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-06 22:38:42,261 INFO L231 Difference]: Finished difference. Result has 44 places, 47 transitions, 98 flow [2023-11-06 22:38:42,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=731, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=98, PETRI_PLACES=44, PETRI_TRANSITIONS=47} [2023-11-06 22:38:42,269 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -9 predicate places. [2023-11-06 22:38:42,269 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 47 transitions, 98 flow [2023-11-06 22:38:42,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 324.5) internal successors, (649), 2 states have internal predecessors, (649), 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) [2023-11-06 22:38:42,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:38:42,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:38:42,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:38:42,271 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-06 22:38:42,273 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:38:42,273 INFO L85 PathProgramCache]: Analyzing trace with hash 41132, now seen corresponding path program 1 times [2023-11-06 22:38:42,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:38:42,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122557930] [2023-11-06 22:38:42,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:38:42,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:38:42,314 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:38:42,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [256451843] [2023-11-06 22:38:42,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:38:42,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:38:42,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:38:42,324 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:38:42,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:38:42,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:38:42,465 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:38:42,470 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:38:42,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:38:42,501 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:38:42,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:38:42,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122557930] [2023-11-06 22:38:42,503 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:38:42,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256451843] [2023-11-06 22:38:42,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256451843] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:38:42,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:38:42,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:38:42,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12144620] [2023-11-06 22:38:42,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:38:42,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:38:42,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:38:42,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:38:42,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:38:42,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 731 [2023-11-06 22:38:42,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 47 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 309.6666666666667) internal successors, (929), 3 states have internal predecessors, (929), 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) [2023-11-06 22:38:42,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:38:42,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 731 [2023-11-06 22:38:42,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:38:42,841 INFO L124 PetriNetUnfolderBase]: 342/563 cut-off events. [2023-11-06 22:38:42,843 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-11-06 22:38:42,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1132 conditions, 563 events. 342/563 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 2440 event pairs, 240 based on Foata normal form. 0/282 useless extension candidates. Maximal degree in co-relation 1129. Up to 551 conditions per place. [2023-11-06 22:38:42,856 INFO L140 encePairwiseOnDemand]: 722/731 looper letters, 36 selfloop transitions, 6 changer transitions 0/44 dead transitions. [2023-11-06 22:38:42,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 44 transitions, 176 flow [2023-11-06 22:38:42,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:38:42,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:38:42,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 972 transitions. [2023-11-06 22:38:42,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4432284541723666 [2023-11-06 22:38:42,866 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 972 transitions. [2023-11-06 22:38:42,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 972 transitions. [2023-11-06 22:38:42,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:38:42,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 972 transitions. [2023-11-06 22:38:42,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 324.0) internal successors, (972), 3 states have internal predecessors, (972), 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) [2023-11-06 22:38:42,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 731.0) internal successors, (2924), 4 states have internal predecessors, (2924), 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) [2023-11-06 22:38:42,890 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 731.0) internal successors, (2924), 4 states have internal predecessors, (2924), 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) [2023-11-06 22:38:42,890 INFO L175 Difference]: Start difference. First operand has 44 places, 47 transitions, 98 flow. Second operand 3 states and 972 transitions. [2023-11-06 22:38:42,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 44 transitions, 176 flow [2023-11-06 22:38:42,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 44 transitions, 176 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:38:42,894 INFO L231 Difference]: Finished difference. Result has 43 places, 44 transitions, 104 flow [2023-11-06 22:38:42,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=731, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=43, PETRI_TRANSITIONS=44} [2023-11-06 22:38:42,896 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -10 predicate places. [2023-11-06 22:38:42,896 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 44 transitions, 104 flow [2023-11-06 22:38:42,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 309.6666666666667) internal successors, (929), 3 states have internal predecessors, (929), 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) [2023-11-06 22:38:42,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:38:42,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:38:42,908 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-06 22:38:43,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:38:43,105 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-06 22:38:43,105 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:38:43,106 INFO L85 PathProgramCache]: Analyzing trace with hash 41133, now seen corresponding path program 1 times [2023-11-06 22:38:43,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:38:43,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072816131] [2023-11-06 22:38:43,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:38:43,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:38:43,129 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:38:43,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [403223204] [2023-11-06 22:38:43,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:38:43,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:38:43,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:38:43,135 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:38:43,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:38:43,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:38:43,251 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:38:43,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:38:43,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:38:43,259 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:38:43,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:38:43,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072816131] [2023-11-06 22:38:43,260 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:38:43,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403223204] [2023-11-06 22:38:43,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403223204] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:38:43,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:38:43,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:38:43,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286283145] [2023-11-06 22:38:43,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:38:43,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:38:43,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:38:43,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:38:43,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:38:43,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 731 [2023-11-06 22:38:43,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 44 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 309.6666666666667) internal successors, (929), 3 states have internal predecessors, (929), 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) [2023-11-06 22:38:43,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:38:43,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 731 [2023-11-06 22:38:43,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:38:43,584 INFO L124 PetriNetUnfolderBase]: 347/571 cut-off events. [2023-11-06 22:38:43,584 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-11-06 22:38:43,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1159 conditions, 571 events. 347/571 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 2473 event pairs, 240 based on Foata normal form. 0/290 useless extension candidates. Maximal degree in co-relation 1155. Up to 564 conditions per place. [2023-11-06 22:38:43,590 INFO L140 encePairwiseOnDemand]: 718/731 looper letters, 40 selfloop transitions, 10 changer transitions 0/52 dead transitions. [2023-11-06 22:38:43,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 52 transitions, 228 flow [2023-11-06 22:38:43,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:38:43,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:38:43,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 980 transitions. [2023-11-06 22:38:43,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4468764249886001 [2023-11-06 22:38:43,597 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 980 transitions. [2023-11-06 22:38:43,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 980 transitions. [2023-11-06 22:38:43,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:38:43,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 980 transitions. [2023-11-06 22:38:43,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 326.6666666666667) internal successors, (980), 3 states have internal predecessors, (980), 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) [2023-11-06 22:38:43,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 731.0) internal successors, (2924), 4 states have internal predecessors, (2924), 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) [2023-11-06 22:38:43,612 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 731.0) internal successors, (2924), 4 states have internal predecessors, (2924), 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) [2023-11-06 22:38:43,613 INFO L175 Difference]: Start difference. First operand has 43 places, 44 transitions, 104 flow. Second operand 3 states and 980 transitions. [2023-11-06 22:38:43,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 52 transitions, 228 flow [2023-11-06 22:38:43,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 52 transitions, 208 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:38:43,618 INFO L231 Difference]: Finished difference. Result has 45 places, 52 transitions, 170 flow [2023-11-06 22:38:43,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=731, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=170, PETRI_PLACES=45, PETRI_TRANSITIONS=52} [2023-11-06 22:38:43,621 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -8 predicate places. [2023-11-06 22:38:43,621 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 52 transitions, 170 flow [2023-11-06 22:38:43,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 309.6666666666667) internal successors, (929), 3 states have internal predecessors, (929), 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) [2023-11-06 22:38:43,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:38:43,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:38:43,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:38:43,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:38:43,830 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-06 22:38:43,831 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:38:43,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1277134, now seen corresponding path program 1 times [2023-11-06 22:38:43,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:38:43,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310394148] [2023-11-06 22:38:43,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:38:43,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:38:43,855 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:38:43,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [747729126] [2023-11-06 22:38:43,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:38:43,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:38:43,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:38:43,866 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:38:43,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:38:43,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:38:43,984 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:38:43,985 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:38:44,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:38:44,032 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:38:44,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:38:44,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:38:44,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310394148] [2023-11-06 22:38:44,067 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:38:44,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747729126] [2023-11-06 22:38:44,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747729126] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:38:44,068 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:38:44,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-11-06 22:38:44,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901799175] [2023-11-06 22:38:44,068 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:38:44,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:38:44,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:38:44,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:38:44,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:38:44,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 731 [2023-11-06 22:38:44,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 52 transitions, 170 flow. Second operand has 6 states, 6 states have (on average 310.0) internal successors, (1860), 6 states have internal predecessors, (1860), 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) [2023-11-06 22:38:44,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:38:44,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 731 [2023-11-06 22:38:44,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:38:44,607 INFO L124 PetriNetUnfolderBase]: 362/595 cut-off events. [2023-11-06 22:38:44,607 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-11-06 22:38:44,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1256 conditions, 595 events. 362/595 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 2536 event pairs, 240 based on Foata normal form. 0/300 useless extension candidates. Maximal degree in co-relation 1251. Up to 576 conditions per place. [2023-11-06 22:38:44,613 INFO L140 encePairwiseOnDemand]: 718/731 looper letters, 40 selfloop transitions, 34 changer transitions 0/76 dead transitions. [2023-11-06 22:38:44,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 76 transitions, 420 flow [2023-11-06 22:38:44,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:38:44,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:38:44,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1937 transitions. [2023-11-06 22:38:44,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4416324669402645 [2023-11-06 22:38:44,627 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1937 transitions. [2023-11-06 22:38:44,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1937 transitions. [2023-11-06 22:38:44,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:38:44,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1937 transitions. [2023-11-06 22:38:44,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 322.8333333333333) internal successors, (1937), 6 states have internal predecessors, (1937), 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) [2023-11-06 22:38:44,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 731.0) internal successors, (5117), 7 states have internal predecessors, (5117), 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) [2023-11-06 22:38:44,655 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 731.0) internal successors, (5117), 7 states have internal predecessors, (5117), 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) [2023-11-06 22:38:44,655 INFO L175 Difference]: Start difference. First operand has 45 places, 52 transitions, 170 flow. Second operand 6 states and 1937 transitions. [2023-11-06 22:38:44,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 76 transitions, 420 flow [2023-11-06 22:38:44,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 76 transitions, 394 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:38:44,663 INFO L231 Difference]: Finished difference. Result has 51 places, 76 transitions, 379 flow [2023-11-06 22:38:44,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=731, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=379, PETRI_PLACES=51, PETRI_TRANSITIONS=76} [2023-11-06 22:38:44,665 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -2 predicate places. [2023-11-06 22:38:44,666 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 76 transitions, 379 flow [2023-11-06 22:38:44,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 310.0) internal successors, (1860), 6 states have internal predecessors, (1860), 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) [2023-11-06 22:38:44,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:38:44,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:38:44,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:38:44,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:38:44,906 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-06 22:38:44,907 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:38:44,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1228093130, now seen corresponding path program 1 times [2023-11-06 22:38:44,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:38:44,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927969254] [2023-11-06 22:38:44,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:38:44,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:38:44,933 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:38:44,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [744314564] [2023-11-06 22:38:44,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:38:44,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:38:44,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:38:44,937 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:38:44,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:38:45,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:38:45,076 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:38:45,078 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:38:45,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:38:45,091 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:38:45,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:38:45,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927969254] [2023-11-06 22:38:45,092 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:38:45,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744314564] [2023-11-06 22:38:45,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [744314564] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:38:45,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:38:45,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:38:45,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102508508] [2023-11-06 22:38:45,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:38:45,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:38:45,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:38:45,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:38:45,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:38:45,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 731 [2023-11-06 22:38:45,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 76 transitions, 379 flow. Second operand has 3 states, 3 states have (on average 320.6666666666667) internal successors, (962), 3 states have internal predecessors, (962), 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) [2023-11-06 22:38:45,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:38:45,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 731 [2023-11-06 22:38:45,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:38:45,356 INFO L124 PetriNetUnfolderBase]: 373/613 cut-off events. [2023-11-06 22:38:45,356 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-06 22:38:45,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1401 conditions, 613 events. 373/613 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 2601 event pairs, 240 based on Foata normal form. 0/318 useless extension candidates. Maximal degree in co-relation 1393. Up to 588 conditions per place. [2023-11-06 22:38:45,363 INFO L140 encePairwiseOnDemand]: 726/731 looper letters, 76 selfloop transitions, 16 changer transitions 0/94 dead transitions. [2023-11-06 22:38:45,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 94 transitions, 683 flow [2023-11-06 22:38:45,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:38:45,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:38:45,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1006 transitions. [2023-11-06 22:38:45,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4587323301413589 [2023-11-06 22:38:45,370 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1006 transitions. [2023-11-06 22:38:45,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1006 transitions. [2023-11-06 22:38:45,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:38:45,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1006 transitions. [2023-11-06 22:38:45,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 335.3333333333333) internal successors, (1006), 3 states have internal predecessors, (1006), 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) [2023-11-06 22:38:45,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 731.0) internal successors, (2924), 4 states have internal predecessors, (2924), 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) [2023-11-06 22:38:45,387 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 731.0) internal successors, (2924), 4 states have internal predecessors, (2924), 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) [2023-11-06 22:38:45,387 INFO L175 Difference]: Start difference. First operand has 51 places, 76 transitions, 379 flow. Second operand 3 states and 1006 transitions. [2023-11-06 22:38:45,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 94 transitions, 683 flow [2023-11-06 22:38:45,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 94 transitions, 606 flow, removed 30 selfloop flow, removed 1 redundant places. [2023-11-06 22:38:45,396 INFO L231 Difference]: Finished difference. Result has 54 places, 87 transitions, 474 flow [2023-11-06 22:38:45,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=731, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=474, PETRI_PLACES=54, PETRI_TRANSITIONS=87} [2023-11-06 22:38:45,397 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 1 predicate places. [2023-11-06 22:38:45,397 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 87 transitions, 474 flow [2023-11-06 22:38:45,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 320.6666666666667) internal successors, (962), 3 states have internal predecessors, (962), 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) [2023-11-06 22:38:45,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:38:45,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:38:45,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:38:45,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:38:45,609 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-06 22:38:45,609 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:38:45,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1228093132, now seen corresponding path program 1 times [2023-11-06 22:38:45,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:38:45,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013813482] [2023-11-06 22:38:45,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:38:45,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:38:45,648 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:38:45,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1883344221] [2023-11-06 22:38:45,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:38:45,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:38:45,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:38:45,658 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:38:45,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:38:45,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:38:45,805 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:38:45,806 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:38:45,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:38:45,814 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:38:45,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:38:45,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013813482] [2023-11-06 22:38:45,815 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:38:45,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883344221] [2023-11-06 22:38:45,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883344221] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:38:45,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:38:45,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:38:45,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601458586] [2023-11-06 22:38:45,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:38:45,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:38:45,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:38:45,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:38:45,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:38:45,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 731 [2023-11-06 22:38:45,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 87 transitions, 474 flow. Second operand has 3 states, 3 states have (on average 320.6666666666667) internal successors, (962), 3 states have internal predecessors, (962), 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) [2023-11-06 22:38:45,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:38:45,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 731 [2023-11-06 22:38:45,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:38:46,059 INFO L124 PetriNetUnfolderBase]: 364/603 cut-off events. [2023-11-06 22:38:46,059 INFO L125 PetriNetUnfolderBase]: For 46/46 co-relation queries the response was YES. [2023-11-06 22:38:46,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1359 conditions, 603 events. 364/603 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 2593 event pairs, 240 based on Foata normal form. 10/335 useless extension candidates. Maximal degree in co-relation 1349. Up to 566 conditions per place. [2023-11-06 22:38:46,065 INFO L140 encePairwiseOnDemand]: 728/731 looper letters, 68 selfloop transitions, 7 changer transitions 0/77 dead transitions. [2023-11-06 22:38:46,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 77 transitions, 542 flow [2023-11-06 22:38:46,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:38:46,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:38:46,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 999 transitions. [2023-11-06 22:38:46,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45554035567715456 [2023-11-06 22:38:46,072 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 999 transitions. [2023-11-06 22:38:46,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 999 transitions. [2023-11-06 22:38:46,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:38:46,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 999 transitions. [2023-11-06 22:38:46,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 333.0) internal successors, (999), 3 states have internal predecessors, (999), 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) [2023-11-06 22:38:46,084 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 731.0) internal successors, (2924), 4 states have internal predecessors, (2924), 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) [2023-11-06 22:38:46,086 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 731.0) internal successors, (2924), 4 states have internal predecessors, (2924), 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) [2023-11-06 22:38:46,087 INFO L175 Difference]: Start difference. First operand has 54 places, 87 transitions, 474 flow. Second operand 3 states and 999 transitions. [2023-11-06 22:38:46,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 77 transitions, 542 flow [2023-11-06 22:38:46,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 77 transitions, 520 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:38:46,094 INFO L231 Difference]: Finished difference. Result has 53 places, 77 transitions, 384 flow [2023-11-06 22:38:46,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=731, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=384, PETRI_PLACES=53, PETRI_TRANSITIONS=77} [2023-11-06 22:38:46,095 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 0 predicate places. [2023-11-06 22:38:46,096 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 77 transitions, 384 flow [2023-11-06 22:38:46,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 320.6666666666667) internal successors, (962), 3 states have internal predecessors, (962), 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) [2023-11-06 22:38:46,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:38:46,097 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-06 22:38:46,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:38:46,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:38:46,305 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-06 22:38:46,305 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:38:46,305 INFO L85 PathProgramCache]: Analyzing trace with hash -605609747, now seen corresponding path program 2 times [2023-11-06 22:38:46,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:38:46,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932246598] [2023-11-06 22:38:46,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:38:46,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:38:46,326 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:38:46,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [43377471] [2023-11-06 22:38:46,327 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:38:46,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:38:46,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:38:46,328 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:38:46,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:38:46,464 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:38:46,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:38:46,466 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 22:38:46,469 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:38:47,854 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 22:38:47,854 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:38:47,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:38:47,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932246598] [2023-11-06 22:38:47,855 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:38:47,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43377471] [2023-11-06 22:38:47,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43377471] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:38:47,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:38:47,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:38:47,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728149635] [2023-11-06 22:38:47,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:38:47,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:38:47,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:38:47,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:38:47,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:38:48,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 731 [2023-11-06 22:38:48,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 77 transitions, 384 flow. Second operand has 3 states, 3 states have (on average 316.0) internal successors, (948), 3 states have internal predecessors, (948), 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) [2023-11-06 22:38:48,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:38:48,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 731 [2023-11-06 22:38:48,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:38:48,770 INFO L124 PetriNetUnfolderBase]: 364/602 cut-off events. [2023-11-06 22:38:48,770 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2023-11-06 22:38:48,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1349 conditions, 602 events. 364/602 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 2565 event pairs, 240 based on Foata normal form. 1/325 useless extension candidates. Maximal degree in co-relation 1339. Up to 593 conditions per place. [2023-11-06 22:38:48,777 INFO L140 encePairwiseOnDemand]: 728/731 looper letters, 68 selfloop transitions, 6 changer transitions 0/76 dead transitions. [2023-11-06 22:38:48,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 76 transitions, 522 flow [2023-11-06 22:38:48,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:38:48,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:38:48,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 986 transitions. [2023-11-06 22:38:48,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4496124031007752 [2023-11-06 22:38:48,784 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 986 transitions. [2023-11-06 22:38:48,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 986 transitions. [2023-11-06 22:38:48,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:38:48,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 986 transitions. [2023-11-06 22:38:48,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 328.6666666666667) internal successors, (986), 3 states have internal predecessors, (986), 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) [2023-11-06 22:38:48,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 731.0) internal successors, (2924), 4 states have internal predecessors, (2924), 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) [2023-11-06 22:38:48,798 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 731.0) internal successors, (2924), 4 states have internal predecessors, (2924), 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) [2023-11-06 22:38:48,798 INFO L175 Difference]: Start difference. First operand has 53 places, 77 transitions, 384 flow. Second operand 3 states and 986 transitions. [2023-11-06 22:38:48,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 76 transitions, 522 flow [2023-11-06 22:38:48,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 76 transitions, 508 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:38:48,808 INFO L231 Difference]: Finished difference. Result has 52 places, 76 transitions, 372 flow [2023-11-06 22:38:48,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=731, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=372, PETRI_PLACES=52, PETRI_TRANSITIONS=76} [2023-11-06 22:38:48,809 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -1 predicate places. [2023-11-06 22:38:48,809 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 76 transitions, 372 flow [2023-11-06 22:38:48,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 316.0) internal successors, (948), 3 states have internal predecessors, (948), 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) [2023-11-06 22:38:48,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:38:48,813 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-11-06 22:38:48,820 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-06 22:38:49,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:38:49,020 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-06 22:38:49,020 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:38:49,020 INFO L85 PathProgramCache]: Analyzing trace with hash -948920773, now seen corresponding path program 1 times [2023-11-06 22:38:49,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:38:49,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077045167] [2023-11-06 22:38:49,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:38:49,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:38:49,045 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:38:49,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [778217239] [2023-11-06 22:38:49,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:38:49,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:38:49,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:38:49,052 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:38:49,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:38:49,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:38:49,205 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:38:49,206 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:38:49,237 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:38:49,237 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:38:49,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:38:49,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077045167] [2023-11-06 22:38:49,238 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:38:49,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [778217239] [2023-11-06 22:38:49,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [778217239] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:38:49,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:38:49,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:38:49,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672258665] [2023-11-06 22:38:49,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:38:49,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:38:49,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:38:49,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:38:49,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:38:49,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 731 [2023-11-06 22:38:49,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 76 transitions, 372 flow. Second operand has 4 states, 4 states have (on average 305.25) internal successors, (1221), 4 states have internal predecessors, (1221), 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) [2023-11-06 22:38:49,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:38:49,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 731 [2023-11-06 22:38:49,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:38:49,855 INFO L124 PetriNetUnfolderBase]: 364/603 cut-off events. [2023-11-06 22:38:49,855 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-11-06 22:38:49,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1353 conditions, 603 events. 364/603 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 2603 event pairs, 240 based on Foata normal form. 1/327 useless extension candidates. Maximal degree in co-relation 1343. Up to 594 conditions per place. [2023-11-06 22:38:49,861 INFO L140 encePairwiseOnDemand]: 726/731 looper letters, 65 selfloop transitions, 10 changer transitions 0/77 dead transitions. [2023-11-06 22:38:49,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 77 transitions, 529 flow [2023-11-06 22:38:49,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:38:49,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:38:49,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1262 transitions. [2023-11-06 22:38:49,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4316005471956224 [2023-11-06 22:38:49,869 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1262 transitions. [2023-11-06 22:38:49,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1262 transitions. [2023-11-06 22:38:49,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:38:49,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1262 transitions. [2023-11-06 22:38:49,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 315.5) internal successors, (1262), 4 states have internal predecessors, (1262), 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) [2023-11-06 22:38:49,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 731.0) internal successors, (3655), 5 states have internal predecessors, (3655), 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) [2023-11-06 22:38:49,885 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 731.0) internal successors, (3655), 5 states have internal predecessors, (3655), 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) [2023-11-06 22:38:49,886 INFO L175 Difference]: Start difference. First operand has 52 places, 76 transitions, 372 flow. Second operand 4 states and 1262 transitions. [2023-11-06 22:38:49,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 77 transitions, 529 flow [2023-11-06 22:38:49,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 77 transitions, 517 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:38:49,891 INFO L231 Difference]: Finished difference. Result has 53 places, 77 transitions, 387 flow [2023-11-06 22:38:49,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=731, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=387, PETRI_PLACES=53, PETRI_TRANSITIONS=77} [2023-11-06 22:38:49,893 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 0 predicate places. [2023-11-06 22:38:49,893 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 77 transitions, 387 flow [2023-11-06 22:38:49,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 305.25) internal successors, (1221), 4 states have internal predecessors, (1221), 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) [2023-11-06 22:38:49,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:38:49,894 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-06 22:38:49,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:38:50,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:38:50,101 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-06 22:38:50,101 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:38:50,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1592276012, now seen corresponding path program 1 times [2023-11-06 22:38:50,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:38:50,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994195357] [2023-11-06 22:38:50,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:38:50,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:38:50,121 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:38:50,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1038723995] [2023-11-06 22:38:50,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:38:50,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:38:50,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:38:50,124 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:38:50,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 22:38:50,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:38:50,295 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:38:50,297 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:38:50,338 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:38:50,339 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:38:50,388 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:38:50,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:38:50,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994195357] [2023-11-06 22:38:50,389 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:38:50,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1038723995] [2023-11-06 22:38:50,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1038723995] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:38:50,389 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:38:50,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-06 22:38:50,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757324319] [2023-11-06 22:38:50,393 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:38:50,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:38:50,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:38:50,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:38:50,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:38:51,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 298 out of 731 [2023-11-06 22:38:51,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 77 transitions, 387 flow. Second operand has 7 states, 7 states have (on average 299.7142857142857) internal successors, (2098), 7 states have internal predecessors, (2098), 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) [2023-11-06 22:38:51,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:38:51,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 298 of 731 [2023-11-06 22:38:51,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:38:51,567 INFO L124 PetriNetUnfolderBase]: 680/1118 cut-off events. [2023-11-06 22:38:51,567 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-11-06 22:38:51,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2398 conditions, 1118 events. 680/1118 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5449 event pairs, 462 based on Foata normal form. 2/597 useless extension candidates. Maximal degree in co-relation 2388. Up to 592 conditions per place. [2023-11-06 22:38:51,576 INFO L140 encePairwiseOnDemand]: 722/731 looper letters, 93 selfloop transitions, 10 changer transitions 1/106 dead transitions. [2023-11-06 22:38:51,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 106 transitions, 672 flow [2023-11-06 22:38:51,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:38:51,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:38:51,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1864 transitions. [2023-11-06 22:38:51,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42498860009119926 [2023-11-06 22:38:51,584 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1864 transitions. [2023-11-06 22:38:51,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1864 transitions. [2023-11-06 22:38:51,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:38:51,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1864 transitions. [2023-11-06 22:38:51,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 310.6666666666667) internal successors, (1864), 6 states have internal predecessors, (1864), 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) [2023-11-06 22:38:51,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 731.0) internal successors, (5117), 7 states have internal predecessors, (5117), 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) [2023-11-06 22:38:51,621 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 731.0) internal successors, (5117), 7 states have internal predecessors, (5117), 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) [2023-11-06 22:38:51,621 INFO L175 Difference]: Start difference. First operand has 53 places, 77 transitions, 387 flow. Second operand 6 states and 1864 transitions. [2023-11-06 22:38:51,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 106 transitions, 672 flow [2023-11-06 22:38:51,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 106 transitions, 661 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-06 22:38:51,627 INFO L231 Difference]: Finished difference. Result has 58 places, 80 transitions, 427 flow [2023-11-06 22:38:51,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=731, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=427, PETRI_PLACES=58, PETRI_TRANSITIONS=80} [2023-11-06 22:38:51,628 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 5 predicate places. [2023-11-06 22:38:51,629 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 80 transitions, 427 flow [2023-11-06 22:38:51,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 299.7142857142857) internal successors, (2098), 7 states have internal predecessors, (2098), 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) [2023-11-06 22:38:51,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:38:51,630 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-06 22:38:51,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 22:38:51,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:38:51,835 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-06 22:38:51,836 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:38:51,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1592462012, now seen corresponding path program 2 times [2023-11-06 22:38:51,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:38:51,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448230855] [2023-11-06 22:38:51,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:38:51,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:38:51,853 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:38:51,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [819311511] [2023-11-06 22:38:51,854 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:38:51,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:38:51,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:38:51,855 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:38:51,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 22:38:51,996 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:38:51,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:38:51,997 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:38:51,999 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:38:52,015 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:38:52,016 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:38:52,034 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:38:52,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:38:52,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448230855] [2023-11-06 22:38:52,035 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:38:52,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819311511] [2023-11-06 22:38:52,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819311511] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:38:52,035 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:38:52,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2023-11-06 22:38:52,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479098235] [2023-11-06 22:38:52,036 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:38:52,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:38:52,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:38:52,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:38:52,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:38:52,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 731 [2023-11-06 22:38:52,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 80 transitions, 427 flow. Second operand has 4 states, 4 states have (on average 315.0) internal successors, (1260), 4 states have internal predecessors, (1260), 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) [2023-11-06 22:38:52,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:38:52,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 731 [2023-11-06 22:38:52,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:38:52,396 INFO L124 PetriNetUnfolderBase]: 676/1112 cut-off events. [2023-11-06 22:38:52,396 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2023-11-06 22:38:52,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2392 conditions, 1112 events. 676/1112 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5471 event pairs, 462 based on Foata normal form. 0/604 useless extension candidates. Maximal degree in co-relation 2381. Up to 1083 conditions per place. [2023-11-06 22:38:52,406 INFO L140 encePairwiseOnDemand]: 725/731 looper letters, 52 selfloop transitions, 21 changer transitions 0/75 dead transitions. [2023-11-06 22:38:52,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 75 transitions, 531 flow [2023-11-06 22:38:52,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:38:52,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:38:52,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1294 transitions. [2023-11-06 22:38:52,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4425444596443228 [2023-11-06 22:38:52,413 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1294 transitions. [2023-11-06 22:38:52,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1294 transitions. [2023-11-06 22:38:52,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:38:52,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1294 transitions. [2023-11-06 22:38:52,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 323.5) internal successors, (1294), 4 states have internal predecessors, (1294), 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) [2023-11-06 22:38:52,425 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 731.0) internal successors, (3655), 5 states have internal predecessors, (3655), 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) [2023-11-06 22:38:52,426 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 731.0) internal successors, (3655), 5 states have internal predecessors, (3655), 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) [2023-11-06 22:38:52,426 INFO L175 Difference]: Start difference. First operand has 58 places, 80 transitions, 427 flow. Second operand 4 states and 1294 transitions. [2023-11-06 22:38:52,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 75 transitions, 531 flow [2023-11-06 22:38:52,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 75 transitions, 511 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-06 22:38:52,431 INFO L231 Difference]: Finished difference. Result has 60 places, 75 transitions, 430 flow [2023-11-06 22:38:52,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=731, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=430, PETRI_PLACES=60, PETRI_TRANSITIONS=75} [2023-11-06 22:38:52,433 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 7 predicate places. [2023-11-06 22:38:52,433 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 75 transitions, 430 flow [2023-11-06 22:38:52,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 315.0) internal successors, (1260), 4 states have internal predecessors, (1260), 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) [2023-11-06 22:38:52,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:38:52,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:38:52,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-06 22:38:52,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-06 22:38:52,643 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-06 22:38:52,643 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:38:52,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1476052151, now seen corresponding path program 1 times [2023-11-06 22:38:52,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:38:52,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926882090] [2023-11-06 22:38:52,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:38:52,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:38:52,661 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:38:52,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [155308240] [2023-11-06 22:38:52,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:38:52,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:38:52,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:38:52,663 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:38:52,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-06 22:38:52,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:38:52,806 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:38:52,807 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:38:52,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:38:52,854 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:38:52,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:38:52,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926882090] [2023-11-06 22:38:52,854 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:38:52,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155308240] [2023-11-06 22:38:52,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155308240] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:38:52,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:38:52,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:38:52,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143209930] [2023-11-06 22:38:52,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:38:52,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:38:52,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:38:52,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:38:52,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:38:53,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 731 [2023-11-06 22:38:53,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 75 transitions, 430 flow. Second operand has 5 states, 5 states have (on average 301.6) internal successors, (1508), 5 states have internal predecessors, (1508), 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) [2023-11-06 22:38:53,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:38:53,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 731 [2023-11-06 22:38:53,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:38:53,567 INFO L124 PetriNetUnfolderBase]: 916/1602 cut-off events. [2023-11-06 22:38:53,567 INFO L125 PetriNetUnfolderBase]: For 184/184 co-relation queries the response was YES. [2023-11-06 22:38:53,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3500 conditions, 1602 events. 916/1602 cut-off events. For 184/184 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 8521 event pairs, 564 based on Foata normal form. 0/991 useless extension candidates. Maximal degree in co-relation 3487. Up to 1055 conditions per place. [2023-11-06 22:38:53,581 INFO L140 encePairwiseOnDemand]: 720/731 looper letters, 119 selfloop transitions, 19 changer transitions 0/139 dead transitions. [2023-11-06 22:38:53,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 139 transitions, 997 flow [2023-11-06 22:38:53,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:38:53,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:38:53,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1895 transitions. [2023-11-06 22:38:53,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4320565435476516 [2023-11-06 22:38:53,590 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1895 transitions. [2023-11-06 22:38:53,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1895 transitions. [2023-11-06 22:38:53,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:38:53,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1895 transitions. [2023-11-06 22:38:53,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 315.8333333333333) internal successors, (1895), 6 states have internal predecessors, (1895), 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) [2023-11-06 22:38:53,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 731.0) internal successors, (5117), 7 states have internal predecessors, (5117), 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) [2023-11-06 22:38:53,609 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 731.0) internal successors, (5117), 7 states have internal predecessors, (5117), 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) [2023-11-06 22:38:53,609 INFO L175 Difference]: Start difference. First operand has 60 places, 75 transitions, 430 flow. Second operand 6 states and 1895 transitions. [2023-11-06 22:38:53,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 139 transitions, 997 flow [2023-11-06 22:38:53,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 139 transitions, 962 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:38:53,616 INFO L231 Difference]: Finished difference. Result has 66 places, 84 transitions, 554 flow [2023-11-06 22:38:53,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=731, PETRI_DIFFERENCE_MINUEND_FLOW=409, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=554, PETRI_PLACES=66, PETRI_TRANSITIONS=84} [2023-11-06 22:38:53,618 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 13 predicate places. [2023-11-06 22:38:53,618 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 84 transitions, 554 flow [2023-11-06 22:38:53,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 301.6) internal successors, (1508), 5 states have internal predecessors, (1508), 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) [2023-11-06 22:38:53,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:38:53,619 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2023-11-06 22:38:53,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-06 22:38:53,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-06 22:38:53,825 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-06 22:38:53,825 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:38:53,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1525207366, now seen corresponding path program 1 times [2023-11-06 22:38:53,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:38:53,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059176556] [2023-11-06 22:38:53,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:38:53,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:38:53,846 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:38:53,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [31972615] [2023-11-06 22:38:53,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:38:53,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:38:53,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:38:53,848 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:38:53,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-06 22:38:54,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:38:54,036 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 22:38:54,038 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:38:54,095 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:38:54,095 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:38:54,161 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:38:54,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:38:54,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059176556] [2023-11-06 22:38:54,162 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:38:54,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31972615] [2023-11-06 22:38:54,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31972615] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:38:54,162 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:38:54,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-11-06 22:38:54,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151764545] [2023-11-06 22:38:54,163 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:38:54,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:38:54,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:38:54,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:38:54,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:38:54,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 298 out of 731 [2023-11-06 22:38:54,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 84 transitions, 554 flow. Second operand has 10 states, 10 states have (on average 299.2) internal successors, (2992), 10 states have internal predecessors, (2992), 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) [2023-11-06 22:38:54,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:38:54,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 298 of 731 [2023-11-06 22:38:54,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:38:55,346 INFO L124 PetriNetUnfolderBase]: 1301/2239 cut-off events. [2023-11-06 22:38:55,347 INFO L125 PetriNetUnfolderBase]: For 558/639 co-relation queries the response was YES. [2023-11-06 22:38:55,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5355 conditions, 2239 events. 1301/2239 cut-off events. For 558/639 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 13589 event pairs, 930 based on Foata normal form. 82/1383 useless extension candidates. Maximal degree in co-relation 5339. Up to 1470 conditions per place. [2023-11-06 22:38:55,368 INFO L140 encePairwiseOnDemand]: 723/731 looper letters, 95 selfloop transitions, 20 changer transitions 0/118 dead transitions. [2023-11-06 22:38:55,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 118 transitions, 905 flow [2023-11-06 22:38:55,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:38:55,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-06 22:38:55,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2764 transitions. [2023-11-06 22:38:55,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.420124639002888 [2023-11-06 22:38:55,381 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2764 transitions. [2023-11-06 22:38:55,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2764 transitions. [2023-11-06 22:38:55,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:38:55,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2764 transitions. [2023-11-06 22:38:55,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 307.1111111111111) internal successors, (2764), 9 states have internal predecessors, (2764), 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) [2023-11-06 22:38:55,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 731.0) internal successors, (7310), 10 states have internal predecessors, (7310), 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) [2023-11-06 22:38:55,406 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 731.0) internal successors, (7310), 10 states have internal predecessors, (7310), 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) [2023-11-06 22:38:55,406 INFO L175 Difference]: Start difference. First operand has 66 places, 84 transitions, 554 flow. Second operand 9 states and 2764 transitions. [2023-11-06 22:38:55,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 118 transitions, 905 flow [2023-11-06 22:38:55,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 118 transitions, 894 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:38:55,415 INFO L231 Difference]: Finished difference. Result has 74 places, 88 transitions, 631 flow [2023-11-06 22:38:55,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=731, PETRI_DIFFERENCE_MINUEND_FLOW=545, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=631, PETRI_PLACES=74, PETRI_TRANSITIONS=88} [2023-11-06 22:38:55,418 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 21 predicate places. [2023-11-06 22:38:55,418 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 88 transitions, 631 flow [2023-11-06 22:38:55,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 299.2) internal successors, (2992), 10 states have internal predecessors, (2992), 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) [2023-11-06 22:38:55,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:38:55,420 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1] [2023-11-06 22:38:55,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-06 22:38:55,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-06 22:38:55,627 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-06 22:38:55,627 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:38:55,627 INFO L85 PathProgramCache]: Analyzing trace with hash 2121875754, now seen corresponding path program 1 times [2023-11-06 22:38:55,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:38:55,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256794523] [2023-11-06 22:38:55,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:38:55,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:38:55,649 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:38:55,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [655140114] [2023-11-06 22:38:55,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:38:55,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:38:55,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:38:55,652 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:38:55,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-06 22:38:55,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:38:55,823 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:38:55,825 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:38:55,860 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:38:55,860 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:38:55,941 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:38:55,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:38:55,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256794523] [2023-11-06 22:38:55,942 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:38:55,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655140114] [2023-11-06 22:38:55,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655140114] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:38:55,943 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:38:55,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-11-06 22:38:55,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51793131] [2023-11-06 22:38:55,944 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:38:55,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:38:55,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:38:55,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:38:55,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:38:56,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 731 [2023-11-06 22:38:56,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 88 transitions, 631 flow. Second operand has 12 states, 12 states have (on average 310.25) internal successors, (3723), 12 states have internal predecessors, (3723), 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) [2023-11-06 22:38:56,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:38:56,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 731 [2023-11-06 22:38:56,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:38:56,806 INFO L124 PetriNetUnfolderBase]: 1337/2311 cut-off events. [2023-11-06 22:38:56,806 INFO L125 PetriNetUnfolderBase]: For 926/1005 co-relation queries the response was YES. [2023-11-06 22:38:56,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5726 conditions, 2311 events. 1337/2311 cut-off events. For 926/1005 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 14141 event pairs, 930 based on Foata normal form. 109/1470 useless extension candidates. Maximal degree in co-relation 5708. Up to 2217 conditions per place. [2023-11-06 22:38:56,830 INFO L140 encePairwiseOnDemand]: 721/731 looper letters, 40 selfloop transitions, 87 changer transitions 0/130 dead transitions. [2023-11-06 22:38:56,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 130 transitions, 1221 flow [2023-11-06 22:38:56,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:38:56,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 22:38:56,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3819 transitions. [2023-11-06 22:38:56,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4353625170998632 [2023-11-06 22:38:56,846 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3819 transitions. [2023-11-06 22:38:56,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3819 transitions. [2023-11-06 22:38:56,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:38:56,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3819 transitions. [2023-11-06 22:38:56,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 318.25) internal successors, (3819), 12 states have internal predecessors, (3819), 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) [2023-11-06 22:38:56,877 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 731.0) internal successors, (9503), 13 states have internal predecessors, (9503), 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) [2023-11-06 22:38:56,880 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 731.0) internal successors, (9503), 13 states have internal predecessors, (9503), 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) [2023-11-06 22:38:56,880 INFO L175 Difference]: Start difference. First operand has 74 places, 88 transitions, 631 flow. Second operand 12 states and 3819 transitions. [2023-11-06 22:38:56,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 130 transitions, 1221 flow [2023-11-06 22:38:56,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 130 transitions, 1200 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-06 22:38:56,893 INFO L231 Difference]: Finished difference. Result has 89 places, 130 transitions, 1216 flow [2023-11-06 22:38:56,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=731, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1216, PETRI_PLACES=89, PETRI_TRANSITIONS=130} [2023-11-06 22:38:56,926 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 36 predicate places. [2023-11-06 22:38:56,926 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 130 transitions, 1216 flow [2023-11-06 22:38:56,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 310.25) internal successors, (3723), 12 states have internal predecessors, (3723), 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) [2023-11-06 22:38:56,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:38:56,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:38:56,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-06 22:38:57,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-06 22:38:57,128 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-06 22:38:57,129 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:38:57,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1458705810, now seen corresponding path program 1 times [2023-11-06 22:38:57,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:38:57,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344819496] [2023-11-06 22:38:57,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:38:57,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:38:57,145 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:38:57,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1860433244] [2023-11-06 22:38:57,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:38:57,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:38:57,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:38:57,147 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:38:57,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-06 22:38:57,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:38:57,303 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:38:57,304 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:38:57,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:38:57,333 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:38:57,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:38:57,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344819496] [2023-11-06 22:38:57,333 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:38:57,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860433244] [2023-11-06 22:38:57,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860433244] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:38:57,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:38:57,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:38:57,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326618781] [2023-11-06 22:38:57,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:38:57,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:38:57,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:38:57,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:38:57,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:38:57,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 731 [2023-11-06 22:38:57,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 130 transitions, 1216 flow. Second operand has 5 states, 5 states have (on average 311.0) internal successors, (1555), 5 states have internal predecessors, (1555), 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) [2023-11-06 22:38:57,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:38:57,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 731 [2023-11-06 22:38:57,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:38:58,063 INFO L124 PetriNetUnfolderBase]: 1041/1847 cut-off events. [2023-11-06 22:38:58,064 INFO L125 PetriNetUnfolderBase]: For 745/807 co-relation queries the response was YES. [2023-11-06 22:38:58,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4947 conditions, 1847 events. 1041/1847 cut-off events. For 745/807 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 10679 event pairs, 707 based on Foata normal form. 65/1255 useless extension candidates. Maximal degree in co-relation 4922. Up to 1521 conditions per place. [2023-11-06 22:38:58,081 INFO L140 encePairwiseOnDemand]: 723/731 looper letters, 127 selfloop transitions, 29 changer transitions 9/167 dead transitions. [2023-11-06 22:38:58,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 167 transitions, 1752 flow [2023-11-06 22:38:58,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:38:58,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:38:58,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1615 transitions. [2023-11-06 22:38:58,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4418604651162791 [2023-11-06 22:38:58,088 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1615 transitions. [2023-11-06 22:38:58,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1615 transitions. [2023-11-06 22:38:58,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:38:58,090 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1615 transitions. [2023-11-06 22:38:58,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 323.0) internal successors, (1615), 5 states have internal predecessors, (1615), 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) [2023-11-06 22:38:58,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 731.0) internal successors, (4386), 6 states have internal predecessors, (4386), 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) [2023-11-06 22:38:58,102 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 731.0) internal successors, (4386), 6 states have internal predecessors, (4386), 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) [2023-11-06 22:38:58,102 INFO L175 Difference]: Start difference. First operand has 89 places, 130 transitions, 1216 flow. Second operand 5 states and 1615 transitions. [2023-11-06 22:38:58,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 167 transitions, 1752 flow [2023-11-06 22:38:58,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 167 transitions, 1458 flow, removed 91 selfloop flow, removed 5 redundant places. [2023-11-06 22:38:58,115 INFO L231 Difference]: Finished difference. Result has 90 places, 132 transitions, 1035 flow [2023-11-06 22:38:58,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=731, PETRI_DIFFERENCE_MINUEND_FLOW=958, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1035, PETRI_PLACES=90, PETRI_TRANSITIONS=132} [2023-11-06 22:38:58,116 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 37 predicate places. [2023-11-06 22:38:58,117 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 132 transitions, 1035 flow [2023-11-06 22:38:58,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 311.0) internal successors, (1555), 5 states have internal predecessors, (1555), 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) [2023-11-06 22:38:58,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:38:58,117 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:38:58,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-06 22:38:58,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-06 22:38:58,324 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-06 22:38:58,324 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:38:58,324 INFO L85 PathProgramCache]: Analyzing trace with hash -312530821, now seen corresponding path program 1 times [2023-11-06 22:38:58,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:38:58,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240924596] [2023-11-06 22:38:58,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:38:58,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:38:58,339 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:38:58,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1443518284] [2023-11-06 22:38:58,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:38:58,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:38:58,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:38:58,341 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:38:58,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-06 22:38:58,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:38:58,498 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:38:58,499 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:38:58,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:38:58,506 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:38:58,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:38:58,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240924596] [2023-11-06 22:38:58,506 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:38:58,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443518284] [2023-11-06 22:38:58,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443518284] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:38:58,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:38:58,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:38:58,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741178308] [2023-11-06 22:38:58,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:38:58,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:38:58,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:38:58,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:38:58,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:38:58,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 321 out of 731 [2023-11-06 22:38:58,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 132 transitions, 1035 flow. Second operand has 3 states, 3 states have (on average 324.3333333333333) internal successors, (973), 3 states have internal predecessors, (973), 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) [2023-11-06 22:38:58,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:38:58,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 321 of 731 [2023-11-06 22:38:58,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:38:59,000 INFO L124 PetriNetUnfolderBase]: 1402/2379 cut-off events. [2023-11-06 22:38:59,001 INFO L125 PetriNetUnfolderBase]: For 1234/1267 co-relation queries the response was YES. [2023-11-06 22:38:59,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6327 conditions, 2379 events. 1402/2379 cut-off events. For 1234/1267 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 13047 event pairs, 514 based on Foata normal form. 33/1536 useless extension candidates. Maximal degree in co-relation 6300. Up to 1616 conditions per place. [2023-11-06 22:38:59,030 INFO L140 encePairwiseOnDemand]: 726/731 looper letters, 146 selfloop transitions, 6 changer transitions 0/154 dead transitions. [2023-11-06 22:38:59,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 154 transitions, 1398 flow [2023-11-06 22:38:59,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:38:59,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:38:59,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1025 transitions. [2023-11-06 22:38:59,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46739626082991337 [2023-11-06 22:38:59,035 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1025 transitions. [2023-11-06 22:38:59,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1025 transitions. [2023-11-06 22:38:59,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:38:59,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1025 transitions. [2023-11-06 22:38:59,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 341.6666666666667) internal successors, (1025), 3 states have internal predecessors, (1025), 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) [2023-11-06 22:38:59,046 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 731.0) internal successors, (2924), 4 states have internal predecessors, (2924), 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) [2023-11-06 22:38:59,047 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 731.0) internal successors, (2924), 4 states have internal predecessors, (2924), 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) [2023-11-06 22:38:59,047 INFO L175 Difference]: Start difference. First operand has 90 places, 132 transitions, 1035 flow. Second operand 3 states and 1025 transitions. [2023-11-06 22:38:59,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 154 transitions, 1398 flow [2023-11-06 22:38:59,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 154 transitions, 1345 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:38:59,062 INFO L231 Difference]: Finished difference. Result has 92 places, 135 transitions, 1022 flow [2023-11-06 22:38:59,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=731, PETRI_DIFFERENCE_MINUEND_FLOW=982, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1022, PETRI_PLACES=92, PETRI_TRANSITIONS=135} [2023-11-06 22:38:59,064 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 39 predicate places. [2023-11-06 22:38:59,064 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 135 transitions, 1022 flow [2023-11-06 22:38:59,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 324.3333333333333) internal successors, (973), 3 states have internal predecessors, (973), 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) [2023-11-06 22:38:59,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:38:59,065 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:38:59,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-06 22:38:59,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-06 22:38:59,271 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-06 22:38:59,272 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:38:59,272 INFO L85 PathProgramCache]: Analyzing trace with hash -312530822, now seen corresponding path program 1 times [2023-11-06 22:38:59,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:38:59,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316308050] [2023-11-06 22:38:59,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:38:59,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:38:59,288 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:38:59,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1136223583] [2023-11-06 22:38:59,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:38:59,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:38:59,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:38:59,290 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:38:59,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-06 22:38:59,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:38:59,450 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:38:59,451 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:38:59,456 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:38:59,456 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:38:59,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:38:59,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316308050] [2023-11-06 22:38:59,457 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:38:59,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136223583] [2023-11-06 22:38:59,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136223583] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:38:59,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:38:59,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:38:59,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461634932] [2023-11-06 22:38:59,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:38:59,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:38:59,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:38:59,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:38:59,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:38:59,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 321 out of 731 [2023-11-06 22:38:59,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 135 transitions, 1022 flow. Second operand has 3 states, 3 states have (on average 324.3333333333333) internal successors, (973), 3 states have internal predecessors, (973), 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) [2023-11-06 22:38:59,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:38:59,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 321 of 731 [2023-11-06 22:38:59,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:38:59,996 INFO L124 PetriNetUnfolderBase]: 1227/2134 cut-off events. [2023-11-06 22:38:59,996 INFO L125 PetriNetUnfolderBase]: For 3175/3204 co-relation queries the response was YES. [2023-11-06 22:39:00,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6650 conditions, 2134 events. 1227/2134 cut-off events. For 3175/3204 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 11760 event pairs, 421 based on Foata normal form. 169/1747 useless extension candidates. Maximal degree in co-relation 6622. Up to 1104 conditions per place. [2023-11-06 22:39:00,014 INFO L140 encePairwiseOnDemand]: 728/731 looper letters, 144 selfloop transitions, 5 changer transitions 0/151 dead transitions. [2023-11-06 22:39:00,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 151 transitions, 1357 flow [2023-11-06 22:39:00,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:39:00,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:39:00,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1020 transitions. [2023-11-06 22:39:00,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46511627906976744 [2023-11-06 22:39:00,019 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1020 transitions. [2023-11-06 22:39:00,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1020 transitions. [2023-11-06 22:39:00,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:39:00,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1020 transitions. [2023-11-06 22:39:00,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 340.0) internal successors, (1020), 3 states have internal predecessors, (1020), 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) [2023-11-06 22:39:00,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 731.0) internal successors, (2924), 4 states have internal predecessors, (2924), 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) [2023-11-06 22:39:00,029 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 731.0) internal successors, (2924), 4 states have internal predecessors, (2924), 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) [2023-11-06 22:39:00,029 INFO L175 Difference]: Start difference. First operand has 92 places, 135 transitions, 1022 flow. Second operand 3 states and 1020 transitions. [2023-11-06 22:39:00,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 151 transitions, 1357 flow [2023-11-06 22:39:00,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 151 transitions, 1347 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:39:00,044 INFO L231 Difference]: Finished difference. Result has 91 places, 133 transitions, 1012 flow [2023-11-06 22:39:00,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=731, PETRI_DIFFERENCE_MINUEND_FLOW=1002, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1012, PETRI_PLACES=91, PETRI_TRANSITIONS=133} [2023-11-06 22:39:00,045 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 38 predicate places. [2023-11-06 22:39:00,045 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 133 transitions, 1012 flow [2023-11-06 22:39:00,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 324.3333333333333) internal successors, (973), 3 states have internal predecessors, (973), 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) [2023-11-06 22:39:00,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:39:00,045 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:39:00,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-06 22:39:00,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-06 22:39:00,253 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-06 22:39:00,253 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:39:00,253 INFO L85 PathProgramCache]: Analyzing trace with hash 305635375, now seen corresponding path program 1 times [2023-11-06 22:39:00,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:39:00,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060099238] [2023-11-06 22:39:00,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:39:00,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:39:00,270 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:39:00,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [565547014] [2023-11-06 22:39:00,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:39:00,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:39:00,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:39:00,272 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:39:00,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-06 22:39:00,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:00,445 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:39:00,453 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:39:00,515 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:39:00,516 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:39:00,589 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:39:00,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:39:00,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060099238] [2023-11-06 22:39:00,590 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:39:00,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565547014] [2023-11-06 22:39:00,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565547014] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:39:00,590 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:39:00,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-11-06 22:39:00,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697965713] [2023-11-06 22:39:00,591 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:39:00,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 22:39:00,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:39:00,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 22:39:00,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:39:00,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 731 [2023-11-06 22:39:01,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 133 transitions, 1012 flow. Second operand has 11 states, 11 states have (on average 294.72727272727275) internal successors, (3242), 11 states have internal predecessors, (3242), 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) [2023-11-06 22:39:01,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:39:01,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 731 [2023-11-06 22:39:01,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:39:02,082 INFO L124 PetriNetUnfolderBase]: 1746/3019 cut-off events. [2023-11-06 22:39:02,082 INFO L125 PetriNetUnfolderBase]: For 3962/3988 co-relation queries the response was YES. [2023-11-06 22:39:02,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9309 conditions, 3019 events. 1746/3019 cut-off events. For 3962/3988 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 17663 event pairs, 842 based on Foata normal form. 90/2323 useless extension candidates. Maximal degree in co-relation 9281. Up to 1398 conditions per place. [2023-11-06 22:39:02,108 INFO L140 encePairwiseOnDemand]: 720/731 looper letters, 201 selfloop transitions, 30 changer transitions 4/237 dead transitions. [2023-11-06 22:39:02,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 237 transitions, 2022 flow [2023-11-06 22:39:02,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:39:02,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-06 22:39:02,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 3048 transitions. [2023-11-06 22:39:02,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41696306429548563 [2023-11-06 22:39:02,124 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 3048 transitions. [2023-11-06 22:39:02,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 3048 transitions. [2023-11-06 22:39:02,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:39:02,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 3048 transitions. [2023-11-06 22:39:02,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 304.8) internal successors, (3048), 10 states have internal predecessors, (3048), 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) [2023-11-06 22:39:02,147 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 731.0) internal successors, (8041), 11 states have internal predecessors, (8041), 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) [2023-11-06 22:39:02,149 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 731.0) internal successors, (8041), 11 states have internal predecessors, (8041), 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) [2023-11-06 22:39:02,149 INFO L175 Difference]: Start difference. First operand has 91 places, 133 transitions, 1012 flow. Second operand 10 states and 3048 transitions. [2023-11-06 22:39:02,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 237 transitions, 2022 flow [2023-11-06 22:39:02,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 237 transitions, 2006 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:39:02,172 INFO L231 Difference]: Finished difference. Result has 102 places, 138 transitions, 1153 flow [2023-11-06 22:39:02,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=731, PETRI_DIFFERENCE_MINUEND_FLOW=1002, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1153, PETRI_PLACES=102, PETRI_TRANSITIONS=138} [2023-11-06 22:39:02,173 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 49 predicate places. [2023-11-06 22:39:02,174 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 138 transitions, 1153 flow [2023-11-06 22:39:02,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 294.72727272727275) internal successors, (3242), 11 states have internal predecessors, (3242), 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) [2023-11-06 22:39:02,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:39:02,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:39:02,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-06 22:39:02,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-06 22:39:02,382 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-06 22:39:02,382 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:39:02,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1827674780, now seen corresponding path program 1 times [2023-11-06 22:39:02,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:39:02,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706222091] [2023-11-06 22:39:02,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:39:02,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:39:02,395 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:39:02,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1909071229] [2023-11-06 22:39:02,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:39:02,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:39:02,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:39:02,398 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:39:02,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-06 22:39:02,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:02,577 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:39:02,578 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:39:02,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:39:02,588 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:39:02,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:39:02,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706222091] [2023-11-06 22:39:02,588 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:39:02,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909071229] [2023-11-06 22:39:02,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909071229] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:39:02,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:39:02,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:39:02,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545019997] [2023-11-06 22:39:02,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:39:02,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:39:02,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:39:02,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:39:02,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:39:02,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 321 out of 731 [2023-11-06 22:39:02,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 138 transitions, 1153 flow. Second operand has 3 states, 3 states have (on average 325.0) internal successors, (975), 3 states have internal predecessors, (975), 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) [2023-11-06 22:39:02,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:39:02,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 321 of 731 [2023-11-06 22:39:02,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:39:03,531 INFO L124 PetriNetUnfolderBase]: 2439/4124 cut-off events. [2023-11-06 22:39:03,531 INFO L125 PetriNetUnfolderBase]: For 8302/8988 co-relation queries the response was YES. [2023-11-06 22:39:03,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12925 conditions, 4124 events. 2439/4124 cut-off events. For 8302/8988 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 25926 event pairs, 945 based on Foata normal form. 686/3668 useless extension candidates. Maximal degree in co-relation 12894. Up to 2412 conditions per place. [2023-11-06 22:39:03,561 INFO L140 encePairwiseOnDemand]: 726/731 looper letters, 155 selfloop transitions, 6 changer transitions 0/164 dead transitions. [2023-11-06 22:39:03,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 164 transitions, 1590 flow [2023-11-06 22:39:03,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:39:03,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:39:03,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1023 transitions. [2023-11-06 22:39:03,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.466484268125855 [2023-11-06 22:39:03,566 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1023 transitions. [2023-11-06 22:39:03,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1023 transitions. [2023-11-06 22:39:03,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:39:03,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1023 transitions. [2023-11-06 22:39:03,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 341.0) internal successors, (1023), 3 states have internal predecessors, (1023), 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) [2023-11-06 22:39:03,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 731.0) internal successors, (2924), 4 states have internal predecessors, (2924), 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) [2023-11-06 22:39:03,575 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 731.0) internal successors, (2924), 4 states have internal predecessors, (2924), 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) [2023-11-06 22:39:03,575 INFO L175 Difference]: Start difference. First operand has 102 places, 138 transitions, 1153 flow. Second operand 3 states and 1023 transitions. [2023-11-06 22:39:03,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 164 transitions, 1590 flow [2023-11-06 22:39:03,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 164 transitions, 1524 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-11-06 22:39:03,596 INFO L231 Difference]: Finished difference. Result has 100 places, 141 transitions, 1131 flow [2023-11-06 22:39:03,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=731, PETRI_DIFFERENCE_MINUEND_FLOW=1091, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1131, PETRI_PLACES=100, PETRI_TRANSITIONS=141} [2023-11-06 22:39:03,597 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 47 predicate places. [2023-11-06 22:39:03,597 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 141 transitions, 1131 flow [2023-11-06 22:39:03,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 325.0) internal successors, (975), 3 states have internal predecessors, (975), 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) [2023-11-06 22:39:03,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:39:03,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:39:03,609 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-06 22:39:03,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-06 22:39:03,804 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-06 22:39:03,805 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:39:03,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1827674743, now seen corresponding path program 1 times [2023-11-06 22:39:03,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:39:03,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218257595] [2023-11-06 22:39:03,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:39:03,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:39:03,828 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:39:03,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [855418674] [2023-11-06 22:39:03,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:39:03,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:39:03,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:39:03,830 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:39:03,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-06 22:39:04,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:04,019 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:39:04,027 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:39:04,062 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:39:04,062 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:39:04,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:39:04,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218257595] [2023-11-06 22:39:04,063 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:39:04,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855418674] [2023-11-06 22:39:04,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855418674] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:39:04,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:39:04,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:39:04,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92202841] [2023-11-06 22:39:04,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:39:04,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:39:04,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:39:04,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:39:04,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:39:04,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 731 [2023-11-06 22:39:04,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 141 transitions, 1131 flow. Second operand has 5 states, 5 states have (on average 302.2) internal successors, (1511), 5 states have internal predecessors, (1511), 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) [2023-11-06 22:39:04,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:39:04,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 731 [2023-11-06 22:39:04,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:39:05,376 INFO L124 PetriNetUnfolderBase]: 1665/2864 cut-off events. [2023-11-06 22:39:05,376 INFO L125 PetriNetUnfolderBase]: For 5831/6353 co-relation queries the response was YES. [2023-11-06 22:39:05,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9751 conditions, 2864 events. 1665/2864 cut-off events. For 5831/6353 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 17155 event pairs, 1053 based on Foata normal form. 582/2959 useless extension candidates. Maximal degree in co-relation 9720. Up to 2193 conditions per place. [2023-11-06 22:39:05,398 INFO L140 encePairwiseOnDemand]: 720/731 looper letters, 153 selfloop transitions, 21 changer transitions 1/180 dead transitions. [2023-11-06 22:39:05,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 180 transitions, 1696 flow [2023-11-06 22:39:05,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:39:05,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:39:05,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1870 transitions. [2023-11-06 22:39:05,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4263565891472868 [2023-11-06 22:39:05,406 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1870 transitions. [2023-11-06 22:39:05,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1870 transitions. [2023-11-06 22:39:05,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:39:05,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1870 transitions. [2023-11-06 22:39:05,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 311.6666666666667) internal successors, (1870), 6 states have internal predecessors, (1870), 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) [2023-11-06 22:39:05,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 731.0) internal successors, (5117), 7 states have internal predecessors, (5117), 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) [2023-11-06 22:39:05,421 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 731.0) internal successors, (5117), 7 states have internal predecessors, (5117), 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) [2023-11-06 22:39:05,421 INFO L175 Difference]: Start difference. First operand has 100 places, 141 transitions, 1131 flow. Second operand 6 states and 1870 transitions. [2023-11-06 22:39:05,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 180 transitions, 1696 flow [2023-11-06 22:39:05,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 180 transitions, 1678 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:39:05,443 INFO L231 Difference]: Finished difference. Result has 105 places, 147 transitions, 1225 flow [2023-11-06 22:39:05,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=731, PETRI_DIFFERENCE_MINUEND_FLOW=1119, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1225, PETRI_PLACES=105, PETRI_TRANSITIONS=147} [2023-11-06 22:39:05,444 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 52 predicate places. [2023-11-06 22:39:05,444 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 147 transitions, 1225 flow [2023-11-06 22:39:05,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 302.2) internal successors, (1511), 5 states have internal predecessors, (1511), 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) [2023-11-06 22:39:05,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:39:05,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:39:05,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-06 22:39:05,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:39:05,652 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-06 22:39:05,653 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:39:05,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1827674799, now seen corresponding path program 1 times [2023-11-06 22:39:05,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:39:05,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998211730] [2023-11-06 22:39:05,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:39:05,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:39:05,668 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:39:05,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1674498051] [2023-11-06 22:39:05,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:39:05,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:39:05,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:39:05,670 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:39:05,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-06 22:39:05,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:05,854 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:39:05,855 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:39:05,865 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:39:05,865 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:39:05,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:39:05,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998211730] [2023-11-06 22:39:05,866 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:39:05,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674498051] [2023-11-06 22:39:05,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1674498051] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:39:05,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:39:05,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:39:05,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205498200] [2023-11-06 22:39:05,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:39:05,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:39:05,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:39:05,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:39:05,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:39:05,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 321 out of 731 [2023-11-06 22:39:05,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 147 transitions, 1225 flow. Second operand has 3 states, 3 states have (on average 325.0) internal successors, (975), 3 states have internal predecessors, (975), 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) [2023-11-06 22:39:05,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:39:05,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 321 of 731 [2023-11-06 22:39:05,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:39:06,522 INFO L124 PetriNetUnfolderBase]: 1647/2852 cut-off events. [2023-11-06 22:39:06,522 INFO L125 PetriNetUnfolderBase]: For 5740/6202 co-relation queries the response was YES. [2023-11-06 22:39:06,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10330 conditions, 2852 events. 1647/2852 cut-off events. For 5740/6202 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 16980 event pairs, 189 based on Foata normal form. 462/2864 useless extension candidates. Maximal degree in co-relation 10297. Up to 2064 conditions per place. [2023-11-06 22:39:06,546 INFO L140 encePairwiseOnDemand]: 728/731 looper letters, 148 selfloop transitions, 5 changer transitions 0/156 dead transitions. [2023-11-06 22:39:06,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 156 transitions, 1582 flow [2023-11-06 22:39:06,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:39:06,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:39:06,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1009 transitions. [2023-11-06 22:39:06,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46010031919744643 [2023-11-06 22:39:06,551 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1009 transitions. [2023-11-06 22:39:06,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1009 transitions. [2023-11-06 22:39:06,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:39:06,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1009 transitions. [2023-11-06 22:39:06,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 336.3333333333333) internal successors, (1009), 3 states have internal predecessors, (1009), 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) [2023-11-06 22:39:06,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 731.0) internal successors, (2924), 4 states have internal predecessors, (2924), 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) [2023-11-06 22:39:06,559 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 731.0) internal successors, (2924), 4 states have internal predecessors, (2924), 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) [2023-11-06 22:39:06,559 INFO L175 Difference]: Start difference. First operand has 105 places, 147 transitions, 1225 flow. Second operand 3 states and 1009 transitions. [2023-11-06 22:39:06,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 156 transitions, 1582 flow [2023-11-06 22:39:06,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 156 transitions, 1552 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-06 22:39:06,586 INFO L231 Difference]: Finished difference. Result has 102 places, 143 transitions, 1177 flow [2023-11-06 22:39:06,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=731, PETRI_DIFFERENCE_MINUEND_FLOW=1167, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1177, PETRI_PLACES=102, PETRI_TRANSITIONS=143} [2023-11-06 22:39:06,587 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 49 predicate places. [2023-11-06 22:39:06,587 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 143 transitions, 1177 flow [2023-11-06 22:39:06,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 325.0) internal successors, (975), 3 states have internal predecessors, (975), 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) [2023-11-06 22:39:06,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:39:06,588 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:39:06,600 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-06 22:39:06,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:39:06,800 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-06 22:39:06,801 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:39:06,801 INFO L85 PathProgramCache]: Analyzing trace with hash -417666848, now seen corresponding path program 1 times [2023-11-06 22:39:06,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:39:06,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237935179] [2023-11-06 22:39:06,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:39:06,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:39:06,822 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:39:06,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1698714835] [2023-11-06 22:39:06,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:39:06,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:39:06,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:39:06,827 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:39:06,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-06 22:39:07,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:07,025 INFO L262 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:39:07,027 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:39:07,033 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:39:07,033 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:39:07,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:39:07,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237935179] [2023-11-06 22:39:07,033 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:39:07,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698714835] [2023-11-06 22:39:07,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1698714835] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:39:07,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:39:07,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:39:07,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101840081] [2023-11-06 22:39:07,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:39:07,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:39:07,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:39:07,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:39:07,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:39:07,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 321 out of 731 [2023-11-06 22:39:07,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 143 transitions, 1177 flow. Second operand has 3 states, 3 states have (on average 325.0) internal successors, (975), 3 states have internal predecessors, (975), 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) [2023-11-06 22:39:07,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:39:07,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 321 of 731 [2023-11-06 22:39:07,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:39:07,820 INFO L124 PetriNetUnfolderBase]: 2151/3590 cut-off events. [2023-11-06 22:39:07,820 INFO L125 PetriNetUnfolderBase]: For 7529/8159 co-relation queries the response was YES. [2023-11-06 22:39:07,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12618 conditions, 3590 events. 2151/3590 cut-off events. For 7529/8159 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 21196 event pairs, 837 based on Foata normal form. 690/3506 useless extension candidates. Maximal degree in co-relation 12585. Up to 2286 conditions per place. [2023-11-06 22:39:07,855 INFO L140 encePairwiseOnDemand]: 723/731 looper letters, 150 selfloop transitions, 11 changer transitions 0/166 dead transitions. [2023-11-06 22:39:07,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 166 transitions, 1618 flow [2023-11-06 22:39:07,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:39:07,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:39:07,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1018 transitions. [2023-11-06 22:39:07,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642042863657091 [2023-11-06 22:39:07,860 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1018 transitions. [2023-11-06 22:39:07,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1018 transitions. [2023-11-06 22:39:07,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:39:07,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1018 transitions. [2023-11-06 22:39:07,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 339.3333333333333) internal successors, (1018), 3 states have internal predecessors, (1018), 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) [2023-11-06 22:39:07,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 731.0) internal successors, (2924), 4 states have internal predecessors, (2924), 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) [2023-11-06 22:39:07,868 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 731.0) internal successors, (2924), 4 states have internal predecessors, (2924), 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) [2023-11-06 22:39:07,869 INFO L175 Difference]: Start difference. First operand has 102 places, 143 transitions, 1177 flow. Second operand 3 states and 1018 transitions. [2023-11-06 22:39:07,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 166 transitions, 1618 flow [2023-11-06 22:39:07,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 166 transitions, 1608 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:39:07,945 INFO L231 Difference]: Finished difference. Result has 104 places, 149 transitions, 1253 flow [2023-11-06 22:39:07,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=731, PETRI_DIFFERENCE_MINUEND_FLOW=1167, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1253, PETRI_PLACES=104, PETRI_TRANSITIONS=149} [2023-11-06 22:39:07,946 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 51 predicate places. [2023-11-06 22:39:07,946 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 149 transitions, 1253 flow [2023-11-06 22:39:07,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 325.0) internal successors, (975), 3 states have internal predecessors, (975), 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) [2023-11-06 22:39:07,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:39:07,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:39:07,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-06 22:39:08,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:39:08,154 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-06 22:39:08,154 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:39:08,155 INFO L85 PathProgramCache]: Analyzing trace with hash -417666849, now seen corresponding path program 1 times [2023-11-06 22:39:08,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:39:08,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271155539] [2023-11-06 22:39:08,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:39:08,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:39:08,168 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:39:08,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [802507967] [2023-11-06 22:39:08,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:39:08,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:39:08,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:39:08,170 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:39:08,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-06 22:39:08,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:08,633 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:39:08,634 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:39:08,651 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:39:08,651 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:39:08,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:39:08,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271155539] [2023-11-06 22:39:08,651 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:39:08,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802507967] [2023-11-06 22:39:08,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802507967] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:39:08,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:39:08,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:39:08,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512005905] [2023-11-06 22:39:08,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:39:08,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:39:08,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:39:08,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:39:08,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:39:08,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 731 [2023-11-06 22:39:08,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 149 transitions, 1253 flow. Second operand has 3 states, 3 states have (on average 323.3333333333333) internal successors, (970), 3 states have internal predecessors, (970), 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) [2023-11-06 22:39:08,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:39:08,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 731 [2023-11-06 22:39:08,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:39:09,387 INFO L124 PetriNetUnfolderBase]: 2109/3494 cut-off events. [2023-11-06 22:39:09,387 INFO L125 PetriNetUnfolderBase]: For 7528/8074 co-relation queries the response was YES. [2023-11-06 22:39:09,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13601 conditions, 3494 events. 2109/3494 cut-off events. For 7528/8074 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 19803 event pairs, 873 based on Foata normal form. 546/3668 useless extension candidates. Maximal degree in co-relation 13567. Up to 2388 conditions per place. [2023-11-06 22:39:09,414 INFO L140 encePairwiseOnDemand]: 726/731 looper letters, 164 selfloop transitions, 7 changer transitions 0/174 dead transitions. [2023-11-06 22:39:09,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 174 transitions, 1746 flow [2023-11-06 22:39:09,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:39:09,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:39:09,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1014 transitions. [2023-11-06 22:39:09,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46238030095759236 [2023-11-06 22:39:09,421 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1014 transitions. [2023-11-06 22:39:09,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1014 transitions. [2023-11-06 22:39:09,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:39:09,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1014 transitions. [2023-11-06 22:39:09,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 338.0) internal successors, (1014), 3 states have internal predecessors, (1014), 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) [2023-11-06 22:39:09,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 731.0) internal successors, (2924), 4 states have internal predecessors, (2924), 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) [2023-11-06 22:39:09,431 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 731.0) internal successors, (2924), 4 states have internal predecessors, (2924), 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) [2023-11-06 22:39:09,431 INFO L175 Difference]: Start difference. First operand has 104 places, 149 transitions, 1253 flow. Second operand 3 states and 1014 transitions. [2023-11-06 22:39:09,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 174 transitions, 1746 flow [2023-11-06 22:39:09,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 174 transitions, 1714 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:39:09,468 INFO L231 Difference]: Finished difference. Result has 105 places, 149 transitions, 1256 flow [2023-11-06 22:39:09,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=731, PETRI_DIFFERENCE_MINUEND_FLOW=1231, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1256, PETRI_PLACES=105, PETRI_TRANSITIONS=149} [2023-11-06 22:39:09,469 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 52 predicate places. [2023-11-06 22:39:09,469 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 149 transitions, 1256 flow [2023-11-06 22:39:09,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 323.3333333333333) internal successors, (970), 3 states have internal predecessors, (970), 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) [2023-11-06 22:39:09,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:39:09,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:39:09,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-06 22:39:09,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:39:09,677 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-06 22:39:09,677 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:39:09,677 INFO L85 PathProgramCache]: Analyzing trace with hash -417666847, now seen corresponding path program 1 times [2023-11-06 22:39:09,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:39:09,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487979874] [2023-11-06 22:39:09,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:39:09,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:39:09,701 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:39:09,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [607104352] [2023-11-06 22:39:09,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:39:09,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:39:09,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:39:09,704 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:39:09,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-06 22:39:09,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:09,904 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:39:09,905 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:39:09,910 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:39:09,910 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:39:09,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:39:09,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487979874] [2023-11-06 22:39:09,911 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:39:09,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607104352] [2023-11-06 22:39:09,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607104352] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:39:09,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:39:09,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:39:09,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680565801] [2023-11-06 22:39:09,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:39:09,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:39:09,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:39:09,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:39:09,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:39:09,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 321 out of 731 [2023-11-06 22:39:09,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 149 transitions, 1256 flow. Second operand has 3 states, 3 states have (on average 325.0) internal successors, (975), 3 states have internal predecessors, (975), 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) [2023-11-06 22:39:09,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:39:09,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 321 of 731 [2023-11-06 22:39:09,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:39:10,511 INFO L124 PetriNetUnfolderBase]: 1695/2894 cut-off events. [2023-11-06 22:39:10,511 INFO L125 PetriNetUnfolderBase]: For 6932/7474 co-relation queries the response was YES. [2023-11-06 22:39:10,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11468 conditions, 2894 events. 1695/2894 cut-off events. For 6932/7474 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 16649 event pairs, 333 based on Foata normal form. 662/3226 useless extension candidates. Maximal degree in co-relation 11433. Up to 1644 conditions per place. [2023-11-06 22:39:10,527 INFO L140 encePairwiseOnDemand]: 726/731 looper letters, 142 selfloop transitions, 11 changer transitions 0/158 dead transitions. [2023-11-06 22:39:10,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 158 transitions, 1621 flow [2023-11-06 22:39:10,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:39:10,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:39:10,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1007 transitions. [2023-11-06 22:39:10,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45918832649338803 [2023-11-06 22:39:10,530 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1007 transitions. [2023-11-06 22:39:10,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1007 transitions. [2023-11-06 22:39:10,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:39:10,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1007 transitions. [2023-11-06 22:39:10,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 335.6666666666667) internal successors, (1007), 3 states have internal predecessors, (1007), 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) [2023-11-06 22:39:10,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 731.0) internal successors, (2924), 4 states have internal predecessors, (2924), 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) [2023-11-06 22:39:10,537 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 731.0) internal successors, (2924), 4 states have internal predecessors, (2924), 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) [2023-11-06 22:39:10,537 INFO L175 Difference]: Start difference. First operand has 105 places, 149 transitions, 1256 flow. Second operand 3 states and 1007 transitions. [2023-11-06 22:39:10,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 158 transitions, 1621 flow [2023-11-06 22:39:10,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 158 transitions, 1607 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:39:10,560 INFO L231 Difference]: Finished difference. Result has 103 places, 145 transitions, 1244 flow [2023-11-06 22:39:10,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=731, PETRI_DIFFERENCE_MINUEND_FLOW=1222, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1244, PETRI_PLACES=103, PETRI_TRANSITIONS=145} [2023-11-06 22:39:10,561 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 50 predicate places. [2023-11-06 22:39:10,562 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 145 transitions, 1244 flow [2023-11-06 22:39:10,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 325.0) internal successors, (975), 3 states have internal predecessors, (975), 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) [2023-11-06 22:39:10,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:39:10,562 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:39:10,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-11-06 22:39:10,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:39:10,769 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-06 22:39:10,770 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:39:10,770 INFO L85 PathProgramCache]: Analyzing trace with hash 246256475, now seen corresponding path program 1 times [2023-11-06 22:39:10,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:39:10,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873130127] [2023-11-06 22:39:10,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:39:10,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:39:10,783 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:39:10,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1468239458] [2023-11-06 22:39:10,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:39:10,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:39:10,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:39:10,786 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:39:10,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-06 22:39:10,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:10,996 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:39:10,997 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:39:11,043 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:39:11,043 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:39:11,094 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:39:11,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:39:11,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873130127] [2023-11-06 22:39:11,095 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:39:11,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468239458] [2023-11-06 22:39:11,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468239458] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:39:11,095 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:39:11,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2023-11-06 22:39:11,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442534376] [2023-11-06 22:39:11,096 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:39:11,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:39:11,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:39:11,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:39:11,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:39:11,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 731 [2023-11-06 22:39:11,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 145 transitions, 1244 flow. Second operand has 9 states, 9 states have (on average 308.0) internal successors, (2772), 9 states have internal predecessors, (2772), 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) [2023-11-06 22:39:11,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:39:11,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 731 [2023-11-06 22:39:11,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:39:12,838 INFO L124 PetriNetUnfolderBase]: 2682/4568 cut-off events. [2023-11-06 22:39:12,838 INFO L125 PetriNetUnfolderBase]: For 11567/12307 co-relation queries the response was YES. [2023-11-06 22:39:12,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18225 conditions, 4568 events. 2682/4568 cut-off events. For 11567/12307 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 27678 event pairs, 1323 based on Foata normal form. 803/4995 useless extension candidates. Maximal degree in co-relation 18190. Up to 2785 conditions per place. [2023-11-06 22:39:12,861 INFO L140 encePairwiseOnDemand]: 722/731 looper letters, 187 selfloop transitions, 50 changer transitions 9/249 dead transitions. [2023-11-06 22:39:12,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 249 transitions, 2544 flow [2023-11-06 22:39:12,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:39:12,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:39:12,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2226 transitions. [2023-11-06 22:39:12,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43502051983584133 [2023-11-06 22:39:12,865 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2226 transitions. [2023-11-06 22:39:12,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2226 transitions. [2023-11-06 22:39:12,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:39:12,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2226 transitions. [2023-11-06 22:39:12,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 318.0) internal successors, (2226), 7 states have internal predecessors, (2226), 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) [2023-11-06 22:39:12,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 731.0) internal successors, (5848), 8 states have internal predecessors, (5848), 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) [2023-11-06 22:39:12,875 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 731.0) internal successors, (5848), 8 states have internal predecessors, (5848), 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) [2023-11-06 22:39:12,875 INFO L175 Difference]: Start difference. First operand has 103 places, 145 transitions, 1244 flow. Second operand 7 states and 2226 transitions. [2023-11-06 22:39:12,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 249 transitions, 2544 flow [2023-11-06 22:39:12,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 249 transitions, 2512 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:39:12,908 INFO L231 Difference]: Finished difference. Result has 111 places, 166 transitions, 1617 flow [2023-11-06 22:39:12,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=731, PETRI_DIFFERENCE_MINUEND_FLOW=1222, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1617, PETRI_PLACES=111, PETRI_TRANSITIONS=166} [2023-11-06 22:39:12,909 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 58 predicate places. [2023-11-06 22:39:12,910 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 166 transitions, 1617 flow [2023-11-06 22:39:12,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 308.0) internal successors, (2772), 9 states have internal predecessors, (2772), 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) [2023-11-06 22:39:12,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:39:12,910 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:39:12,921 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-11-06 22:39:13,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-06 22:39:13,117 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-06 22:39:13,117 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:39:13,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1182584277, now seen corresponding path program 2 times [2023-11-06 22:39:13,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:39:13,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040414868] [2023-11-06 22:39:13,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:39:13,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:39:13,135 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:39:13,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [511437893] [2023-11-06 22:39:13,135 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:39:13,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:39:13,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:39:13,137 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:39:13,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-06 22:39:13,360 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:39:13,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:39:13,361 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:39:13,362 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:39:13,455 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-06 22:39:13,455 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:39:13,537 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-06 22:39:13,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:39:13,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040414868] [2023-11-06 22:39:13,538 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:39:13,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511437893] [2023-11-06 22:39:13,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511437893] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:39:13,538 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:39:13,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-11-06 22:39:13,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030242502] [2023-11-06 22:39:13,539 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:39:13,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:39:13,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:39:13,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:39:13,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:39:14,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 731 [2023-11-06 22:39:14,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 166 transitions, 1617 flow. Second operand has 10 states, 10 states have (on average 308.4) internal successors, (3084), 10 states have internal predecessors, (3084), 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) [2023-11-06 22:39:14,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:39:14,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 731 [2023-11-06 22:39:14,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:39:15,377 INFO L124 PetriNetUnfolderBase]: 2806/4755 cut-off events. [2023-11-06 22:39:15,377 INFO L125 PetriNetUnfolderBase]: For 13802/14050 co-relation queries the response was YES. [2023-11-06 22:39:15,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20246 conditions, 4755 events. 2806/4755 cut-off events. For 13802/14050 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 28386 event pairs, 1071 based on Foata normal form. 248/4692 useless extension candidates. Maximal degree in co-relation 20207. Up to 2933 conditions per place. [2023-11-06 22:39:15,408 INFO L140 encePairwiseOnDemand]: 722/731 looper letters, 157 selfloop transitions, 37 changer transitions 40/236 dead transitions. [2023-11-06 22:39:15,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 236 transitions, 2602 flow [2023-11-06 22:39:15,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:39:15,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 22:39:15,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2526 transitions. [2023-11-06 22:39:15,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4319425444596443 [2023-11-06 22:39:15,412 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2526 transitions. [2023-11-06 22:39:15,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2526 transitions. [2023-11-06 22:39:15,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:39:15,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2526 transitions. [2023-11-06 22:39:15,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 315.75) internal successors, (2526), 8 states have internal predecessors, (2526), 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) [2023-11-06 22:39:15,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 731.0) internal successors, (6579), 9 states have internal predecessors, (6579), 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) [2023-11-06 22:39:15,424 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 731.0) internal successors, (6579), 9 states have internal predecessors, (6579), 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) [2023-11-06 22:39:15,424 INFO L175 Difference]: Start difference. First operand has 111 places, 166 transitions, 1617 flow. Second operand 8 states and 2526 transitions. [2023-11-06 22:39:15,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 236 transitions, 2602 flow [2023-11-06 22:39:15,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 236 transitions, 2507 flow, removed 20 selfloop flow, removed 2 redundant places. [2023-11-06 22:39:15,472 INFO L231 Difference]: Finished difference. Result has 117 places, 158 transitions, 1553 flow [2023-11-06 22:39:15,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=731, PETRI_DIFFERENCE_MINUEND_FLOW=1522, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1553, PETRI_PLACES=117, PETRI_TRANSITIONS=158} [2023-11-06 22:39:15,473 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 64 predicate places. [2023-11-06 22:39:15,473 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 158 transitions, 1553 flow [2023-11-06 22:39:15,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 308.4) internal successors, (3084), 10 states have internal predecessors, (3084), 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) [2023-11-06 22:39:15,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:39:15,474 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1] [2023-11-06 22:39:15,480 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-11-06 22:39:15,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:39:15,680 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-06 22:39:15,680 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:39:15,681 INFO L85 PathProgramCache]: Analyzing trace with hash -547161878, now seen corresponding path program 2 times [2023-11-06 22:39:15,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:39:15,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199767697] [2023-11-06 22:39:15,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:39:15,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:39:15,704 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:39:15,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [452627034] [2023-11-06 22:39:15,704 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:39:15,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:39:15,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:39:15,706 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:39:15,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-06 22:39:15,917 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:39:15,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:39:15,919 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:39:15,920 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:39:15,948 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-06 22:39:15,949 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:39:15,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:39:15,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199767697] [2023-11-06 22:39:15,949 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:39:15,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452627034] [2023-11-06 22:39:15,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452627034] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:39:15,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:39:15,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:39:15,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536658446] [2023-11-06 22:39:15,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:39:15,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:39:15,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:39:15,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:39:15,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:39:16,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 731 [2023-11-06 22:39:16,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 158 transitions, 1553 flow. Second operand has 4 states, 4 states have (on average 314.5) internal successors, (1258), 4 states have internal predecessors, (1258), 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) [2023-11-06 22:39:16,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:39:16,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 731 [2023-11-06 22:39:16,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:39:16,988 INFO L124 PetriNetUnfolderBase]: 1990/3440 cut-off events. [2023-11-06 22:39:16,988 INFO L125 PetriNetUnfolderBase]: For 17139/18031 co-relation queries the response was YES. [2023-11-06 22:39:17,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15000 conditions, 3440 events. 1990/3440 cut-off events. For 17139/18031 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 20755 event pairs, 1317 based on Foata normal form. 901/4046 useless extension candidates. Maximal degree in co-relation 14959. Up to 3270 conditions per place. [2023-11-06 22:39:17,025 INFO L140 encePairwiseOnDemand]: 726/731 looper letters, 92 selfloop transitions, 59 changer transitions 0/156 dead transitions. [2023-11-06 22:39:17,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 156 transitions, 1800 flow [2023-11-06 22:39:17,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:39:17,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:39:17,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1286 transitions. [2023-11-06 22:39:17,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43980848153214774 [2023-11-06 22:39:17,029 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1286 transitions. [2023-11-06 22:39:17,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1286 transitions. [2023-11-06 22:39:17,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:39:17,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1286 transitions. [2023-11-06 22:39:17,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 321.5) internal successors, (1286), 4 states have internal predecessors, (1286), 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) [2023-11-06 22:39:17,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 731.0) internal successors, (3655), 5 states have internal predecessors, (3655), 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) [2023-11-06 22:39:17,037 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 731.0) internal successors, (3655), 5 states have internal predecessors, (3655), 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) [2023-11-06 22:39:17,037 INFO L175 Difference]: Start difference. First operand has 117 places, 158 transitions, 1553 flow. Second operand 4 states and 1286 transitions. [2023-11-06 22:39:17,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 156 transitions, 1800 flow [2023-11-06 22:39:17,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 156 transitions, 1718 flow, removed 16 selfloop flow, removed 8 redundant places. [2023-11-06 22:39:17,075 INFO L231 Difference]: Finished difference. Result has 105 places, 156 transitions, 1534 flow [2023-11-06 22:39:17,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=731, PETRI_DIFFERENCE_MINUEND_FLOW=1416, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1534, PETRI_PLACES=105, PETRI_TRANSITIONS=156} [2023-11-06 22:39:17,076 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 52 predicate places. [2023-11-06 22:39:17,076 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 156 transitions, 1534 flow [2023-11-06 22:39:17,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 314.5) internal successors, (1258), 4 states have internal predecessors, (1258), 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) [2023-11-06 22:39:17,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:39:17,077 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1] [2023-11-06 22:39:17,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-11-06 22:39:17,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:39:17,283 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-06 22:39:17,283 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:39:17,284 INFO L85 PathProgramCache]: Analyzing trace with hash 2034032699, now seen corresponding path program 2 times [2023-11-06 22:39:17,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:39:17,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752356768] [2023-11-06 22:39:17,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:39:17,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:39:17,306 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:39:17,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [951334433] [2023-11-06 22:39:17,306 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:39:17,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:39:17,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:39:17,307 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:39:17,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-06 22:39:17,533 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:39:17,533 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:39:17,534 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-06 22:39:17,536 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:39:19,867 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-11-06 22:39:19,867 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:39:19,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:39:19,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752356768] [2023-11-06 22:39:19,868 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:39:19,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951334433] [2023-11-06 22:39:19,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951334433] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:39:19,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:39:19,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:39:19,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323690468] [2023-11-06 22:39:19,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:39:19,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:39:19,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:39:19,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:39:19,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:39:20,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 731 [2023-11-06 22:39:20,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 156 transitions, 1534 flow. Second operand has 4 states, 4 states have (on average 314.25) internal successors, (1257), 4 states have internal predecessors, (1257), 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) [2023-11-06 22:39:20,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:39:20,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 731 [2023-11-06 22:39:20,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:39:21,390 INFO L124 PetriNetUnfolderBase]: 1990/3439 cut-off events. [2023-11-06 22:39:21,391 INFO L125 PetriNetUnfolderBase]: For 10956/11848 co-relation queries the response was YES. [2023-11-06 22:39:21,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13918 conditions, 3439 events. 1990/3439 cut-off events. For 10956/11848 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 20799 event pairs, 1317 based on Foata normal form. 893/4037 useless extension candidates. Maximal degree in co-relation 13881. Up to 3360 conditions per place. [2023-11-06 22:39:21,411 INFO L140 encePairwiseOnDemand]: 728/731 looper letters, 135 selfloop transitions, 15 changer transitions 0/155 dead transitions. [2023-11-06 22:39:21,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 155 transitions, 1807 flow [2023-11-06 22:39:21,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:39:21,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:39:21,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1285 transitions. [2023-11-06 22:39:21,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43946648426812585 [2023-11-06 22:39:21,413 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1285 transitions. [2023-11-06 22:39:21,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1285 transitions. [2023-11-06 22:39:21,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:39:21,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1285 transitions. [2023-11-06 22:39:21,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 321.25) internal successors, (1285), 4 states have internal predecessors, (1285), 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) [2023-11-06 22:39:21,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 731.0) internal successors, (3655), 5 states have internal predecessors, (3655), 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) [2023-11-06 22:39:21,420 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 731.0) internal successors, (3655), 5 states have internal predecessors, (3655), 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) [2023-11-06 22:39:21,420 INFO L175 Difference]: Start difference. First operand has 105 places, 156 transitions, 1534 flow. Second operand 4 states and 1285 transitions. [2023-11-06 22:39:21,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 155 transitions, 1807 flow [2023-11-06 22:39:21,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 155 transitions, 1537 flow, removed 7 selfloop flow, removed 13 redundant places. [2023-11-06 22:39:21,447 INFO L231 Difference]: Finished difference. Result has 91 places, 155 transitions, 1267 flow [2023-11-06 22:39:21,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=731, PETRI_DIFFERENCE_MINUEND_FLOW=1237, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1267, PETRI_PLACES=91, PETRI_TRANSITIONS=155} [2023-11-06 22:39:21,448 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 38 predicate places. [2023-11-06 22:39:21,448 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 155 transitions, 1267 flow [2023-11-06 22:39:21,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 314.25) internal successors, (1257), 4 states have internal predecessors, (1257), 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) [2023-11-06 22:39:21,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:39:21,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:39:21,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-11-06 22:39:21,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:39:21,655 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-06 22:39:21,655 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:39:21,655 INFO L85 PathProgramCache]: Analyzing trace with hash -194678341, now seen corresponding path program 1 times [2023-11-06 22:39:21,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:39:21,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518836271] [2023-11-06 22:39:21,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:39:21,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:39:21,668 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:39:21,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [363832245] [2023-11-06 22:39:21,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:39:21,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:39:21,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:39:21,670 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:39:21,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-06 22:39:21,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:21,881 INFO L262 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:39:21,882 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:39:21,960 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:39:21,960 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:39:22,030 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:39:22,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:39:22,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518836271] [2023-11-06 22:39:22,031 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:39:22,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363832245] [2023-11-06 22:39:22,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363832245] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:39:22,031 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:39:22,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-11-06 22:39:22,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293933492] [2023-11-06 22:39:22,032 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:39:22,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 22:39:22,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:39:22,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 22:39:22,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:39:22,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 731 [2023-11-06 22:39:22,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 155 transitions, 1267 flow. Second operand has 11 states, 11 states have (on average 295.09090909090907) internal successors, (3246), 11 states have internal predecessors, (3246), 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) [2023-11-06 22:39:22,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:39:22,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 731 [2023-11-06 22:39:22,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:39:23,952 INFO L124 PetriNetUnfolderBase]: 2931/5059 cut-off events. [2023-11-06 22:39:23,952 INFO L125 PetriNetUnfolderBase]: For 15081/16415 co-relation queries the response was YES. [2023-11-06 22:39:23,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19896 conditions, 5059 events. 2931/5059 cut-off events. For 15081/16415 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 32841 event pairs, 1365 based on Foata normal form. 1533/6188 useless extension candidates. Maximal degree in co-relation 19869. Up to 2709 conditions per place. [2023-11-06 22:39:23,986 INFO L140 encePairwiseOnDemand]: 718/731 looper letters, 197 selfloop transitions, 46 changer transitions 4/252 dead transitions. [2023-11-06 22:39:23,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 252 transitions, 2474 flow [2023-11-06 22:39:23,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:39:23,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-06 22:39:23,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2720 transitions. [2023-11-06 22:39:23,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4134366925064599 [2023-11-06 22:39:23,991 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2720 transitions. [2023-11-06 22:39:23,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2720 transitions. [2023-11-06 22:39:23,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:39:23,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2720 transitions. [2023-11-06 22:39:23,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 302.22222222222223) internal successors, (2720), 9 states have internal predecessors, (2720), 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) [2023-11-06 22:39:24,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 731.0) internal successors, (7310), 10 states have internal predecessors, (7310), 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) [2023-11-06 22:39:24,003 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 731.0) internal successors, (7310), 10 states have internal predecessors, (7310), 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) [2023-11-06 22:39:24,003 INFO L175 Difference]: Start difference. First operand has 91 places, 155 transitions, 1267 flow. Second operand 9 states and 2720 transitions. [2023-11-06 22:39:24,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 252 transitions, 2474 flow [2023-11-06 22:39:24,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 252 transitions, 2458 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:39:24,041 INFO L231 Difference]: Finished difference. Result has 100 places, 174 transitions, 1597 flow [2023-11-06 22:39:24,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=731, PETRI_DIFFERENCE_MINUEND_FLOW=1251, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1597, PETRI_PLACES=100, PETRI_TRANSITIONS=174} [2023-11-06 22:39:24,042 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 47 predicate places. [2023-11-06 22:39:24,042 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 174 transitions, 1597 flow [2023-11-06 22:39:24,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 295.09090909090907) internal successors, (3246), 11 states have internal predecessors, (3246), 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) [2023-11-06 22:39:24,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:39:24,043 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:39:24,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-11-06 22:39:24,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:39:24,249 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-06 22:39:24,250 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:39:24,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1727178579, now seen corresponding path program 2 times [2023-11-06 22:39:24,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:39:24,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000105428] [2023-11-06 22:39:24,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:39:24,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:39:24,263 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:39:24,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1524546506] [2023-11-06 22:39:24,263 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:39:24,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:39:24,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:39:24,265 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:39:24,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-06 22:39:24,479 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:39:24,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:39:24,481 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:39:24,482 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:39:24,514 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-06 22:39:24,514 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:39:24,539 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-06 22:39:24,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:39:24,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000105428] [2023-11-06 22:39:24,539 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:39:24,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524546506] [2023-11-06 22:39:24,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524546506] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:39:24,539 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:39:24,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2023-11-06 22:39:24,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899651600] [2023-11-06 22:39:24,540 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:39:24,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:39:24,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:39:24,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:39:24,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:39:24,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 731 [2023-11-06 22:39:24,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 174 transitions, 1597 flow. Second operand has 4 states, 4 states have (on average 318.5) internal successors, (1274), 4 states have internal predecessors, (1274), 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) [2023-11-06 22:39:24,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:39:24,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 731 [2023-11-06 22:39:24,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:39:25,385 INFO L124 PetriNetUnfolderBase]: 2992/5156 cut-off events. [2023-11-06 22:39:25,385 INFO L125 PetriNetUnfolderBase]: For 18501/19761 co-relation queries the response was YES. [2023-11-06 22:39:25,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21937 conditions, 5156 events. 2992/5156 cut-off events. For 18501/19761 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 33256 event pairs, 342 based on Foata normal form. 1260/6214 useless extension candidates. Maximal degree in co-relation 21907. Up to 3501 conditions per place. [2023-11-06 22:39:25,413 INFO L140 encePairwiseOnDemand]: 725/731 looper letters, 148 selfloop transitions, 14 changer transitions 20/185 dead transitions. [2023-11-06 22:39:25,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 185 transitions, 2028 flow [2023-11-06 22:39:25,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:39:25,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:39:25,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1301 transitions. [2023-11-06 22:39:25,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44493844049247605 [2023-11-06 22:39:25,416 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1301 transitions. [2023-11-06 22:39:25,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1301 transitions. [2023-11-06 22:39:25,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:39:25,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1301 transitions. [2023-11-06 22:39:25,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 325.25) internal successors, (1301), 4 states have internal predecessors, (1301), 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) [2023-11-06 22:39:25,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 731.0) internal successors, (3655), 5 states have internal predecessors, (3655), 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) [2023-11-06 22:39:25,422 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 731.0) internal successors, (3655), 5 states have internal predecessors, (3655), 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) [2023-11-06 22:39:25,422 INFO L175 Difference]: Start difference. First operand has 100 places, 174 transitions, 1597 flow. Second operand 4 states and 1301 transitions. [2023-11-06 22:39:25,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 185 transitions, 2028 flow [2023-11-06 22:39:25,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 185 transitions, 1987 flow, removed 11 selfloop flow, removed 1 redundant places. [2023-11-06 22:39:25,465 INFO L231 Difference]: Finished difference. Result has 102 places, 152 transitions, 1239 flow [2023-11-06 22:39:25,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=731, PETRI_DIFFERENCE_MINUEND_FLOW=1500, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1239, PETRI_PLACES=102, PETRI_TRANSITIONS=152} [2023-11-06 22:39:25,466 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 49 predicate places. [2023-11-06 22:39:25,467 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 152 transitions, 1239 flow [2023-11-06 22:39:25,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 318.5) internal successors, (1274), 4 states have internal predecessors, (1274), 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) [2023-11-06 22:39:25,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:39:25,467 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:39:25,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-11-06 22:39:25,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:39:25,674 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-06 22:39:25,674 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:39:25,674 INFO L85 PathProgramCache]: Analyzing trace with hash 2045958673, now seen corresponding path program 2 times [2023-11-06 22:39:25,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:39:25,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137649870] [2023-11-06 22:39:25,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:39:25,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:39:25,700 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:39:25,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1201564206] [2023-11-06 22:39:25,700 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:39:25,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:39:25,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:39:25,702 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:39:25,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-06 22:39:25,926 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:39:25,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:39:25,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:39:25,929 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:39:25,968 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-06 22:39:25,968 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:39:25,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:39:25,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137649870] [2023-11-06 22:39:25,969 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:39:25,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201564206] [2023-11-06 22:39:25,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201564206] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:39:25,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:39:25,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:39:25,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123963171] [2023-11-06 22:39:25,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:39:25,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:39:25,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:39:25,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:39:25,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:39:26,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 317 out of 731 [2023-11-06 22:39:26,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 152 transitions, 1239 flow. Second operand has 4 states, 4 states have (on average 321.0) internal successors, (1284), 4 states have internal predecessors, (1284), 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) [2023-11-06 22:39:26,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:39:26,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 317 of 731 [2023-11-06 22:39:26,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:39:26,829 INFO L124 PetriNetUnfolderBase]: 2498/4283 cut-off events. [2023-11-06 22:39:26,829 INFO L125 PetriNetUnfolderBase]: For 16095/17135 co-relation queries the response was YES. [2023-11-06 22:39:26,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18269 conditions, 4283 events. 2498/4283 cut-off events. For 16095/17135 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 26380 event pairs, 822 based on Foata normal form. 1096/5187 useless extension candidates. Maximal degree in co-relation 18237. Up to 2473 conditions per place. [2023-11-06 22:39:26,857 INFO L140 encePairwiseOnDemand]: 726/731 looper letters, 160 selfloop transitions, 8 changer transitions 0/171 dead transitions. [2023-11-06 22:39:26,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 171 transitions, 1700 flow [2023-11-06 22:39:26,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:39:26,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:39:26,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1314 transitions. [2023-11-06 22:39:26,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4493844049247606 [2023-11-06 22:39:26,861 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1314 transitions. [2023-11-06 22:39:26,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1314 transitions. [2023-11-06 22:39:26,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:39:26,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1314 transitions. [2023-11-06 22:39:26,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 328.5) internal successors, (1314), 4 states have internal predecessors, (1314), 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) [2023-11-06 22:39:26,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 731.0) internal successors, (3655), 5 states have internal predecessors, (3655), 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) [2023-11-06 22:39:26,867 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 731.0) internal successors, (3655), 5 states have internal predecessors, (3655), 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) [2023-11-06 22:39:26,867 INFO L175 Difference]: Start difference. First operand has 102 places, 152 transitions, 1239 flow. Second operand 4 states and 1314 transitions. [2023-11-06 22:39:26,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 171 transitions, 1700 flow [2023-11-06 22:39:26,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 171 transitions, 1634 flow, removed 15 selfloop flow, removed 7 redundant places. [2023-11-06 22:39:26,906 INFO L231 Difference]: Finished difference. Result has 96 places, 152 transitions, 1200 flow [2023-11-06 22:39:26,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=731, PETRI_DIFFERENCE_MINUEND_FLOW=1175, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1200, PETRI_PLACES=96, PETRI_TRANSITIONS=152} [2023-11-06 22:39:26,906 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 43 predicate places. [2023-11-06 22:39:26,906 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 152 transitions, 1200 flow [2023-11-06 22:39:26,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 321.0) internal successors, (1284), 4 states have internal predecessors, (1284), 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) [2023-11-06 22:39:26,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:39:26,907 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:39:26,912 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2023-11-06 22:39:27,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:39:27,108 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-06 22:39:27,108 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:39:27,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1753359973, now seen corresponding path program 1 times [2023-11-06 22:39:27,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:39:27,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188772995] [2023-11-06 22:39:27,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:39:27,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:39:27,128 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:39:27,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [438884495] [2023-11-06 22:39:27,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:39:27,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:39:27,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:39:27,130 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:39:27,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-11-06 22:39:27,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:27,385 INFO L262 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:39:27,386 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:39:27,432 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 22:39:27,432 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:39:27,470 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 22:39:27,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:39:27,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188772995] [2023-11-06 22:39:27,470 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:39:27,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438884495] [2023-11-06 22:39:27,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [438884495] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:39:27,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:39:27,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-06 22:39:27,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520105891] [2023-11-06 22:39:27,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:39:27,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:39:27,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:39:27,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:39:27,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:39:27,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 731 [2023-11-06 22:39:27,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 152 transitions, 1200 flow. Second operand has 5 states, 5 states have (on average 296.2) internal successors, (1481), 5 states have internal predecessors, (1481), 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) [2023-11-06 22:39:27,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:39:27,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 731 [2023-11-06 22:39:27,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:39:28,611 INFO L124 PetriNetUnfolderBase]: 2230/3937 cut-off events. [2023-11-06 22:39:28,611 INFO L125 PetriNetUnfolderBase]: For 14118/15194 co-relation queries the response was YES. [2023-11-06 22:39:28,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15745 conditions, 3937 events. 2230/3937 cut-off events. For 14118/15194 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 24217 event pairs, 426 based on Foata normal form. 1188/4881 useless extension candidates. Maximal degree in co-relation 15716. Up to 2278 conditions per place. [2023-11-06 22:39:28,634 INFO L140 encePairwiseOnDemand]: 719/731 looper letters, 145 selfloop transitions, 16 changer transitions 0/166 dead transitions. [2023-11-06 22:39:28,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 166 transitions, 1594 flow [2023-11-06 22:39:28,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:39:28,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:39:28,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1511 transitions. [2023-11-06 22:39:28,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.413406292749658 [2023-11-06 22:39:28,638 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1511 transitions. [2023-11-06 22:39:28,638 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1511 transitions. [2023-11-06 22:39:28,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:39:28,639 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1511 transitions. [2023-11-06 22:39:28,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 302.2) internal successors, (1511), 5 states have internal predecessors, (1511), 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) [2023-11-06 22:39:28,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 731.0) internal successors, (4386), 6 states have internal predecessors, (4386), 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) [2023-11-06 22:39:28,645 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 731.0) internal successors, (4386), 6 states have internal predecessors, (4386), 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) [2023-11-06 22:39:28,645 INFO L175 Difference]: Start difference. First operand has 96 places, 152 transitions, 1200 flow. Second operand 5 states and 1511 transitions. [2023-11-06 22:39:28,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 166 transitions, 1594 flow [2023-11-06 22:39:28,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 166 transitions, 1582 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 22:39:28,677 INFO L231 Difference]: Finished difference. Result has 100 places, 153 transitions, 1228 flow [2023-11-06 22:39:28,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=731, PETRI_DIFFERENCE_MINUEND_FLOW=1132, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1228, PETRI_PLACES=100, PETRI_TRANSITIONS=153} [2023-11-06 22:39:28,678 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 47 predicate places. [2023-11-06 22:39:28,678 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 153 transitions, 1228 flow [2023-11-06 22:39:28,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 296.2) internal successors, (1481), 5 states have internal predecessors, (1481), 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) [2023-11-06 22:39:28,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:39:28,679 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:39:28,693 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-11-06 22:39:28,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:39:28,885 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-06 22:39:28,885 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:39:28,886 INFO L85 PathProgramCache]: Analyzing trace with hash -928797047, now seen corresponding path program 1 times [2023-11-06 22:39:28,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:39:28,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221180614] [2023-11-06 22:39:28,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:39:28,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:39:28,904 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:39:28,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1401812648] [2023-11-06 22:39:28,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:39:28,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:39:28,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:39:28,911 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:39:28,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-06 22:39:29,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:29,155 INFO L262 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:39:29,156 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:39:29,176 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 22:39:29,176 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:39:29,193 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 22:39:29,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:39:29,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221180614] [2023-11-06 22:39:29,194 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:39:29,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401812648] [2023-11-06 22:39:29,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401812648] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:39:29,194 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:39:29,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-11-06 22:39:29,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596454425] [2023-11-06 22:39:29,194 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:39:29,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:39:29,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:39:29,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:39:29,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:39:29,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 321 out of 731 [2023-11-06 22:39:29,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 153 transitions, 1228 flow. Second operand has 6 states, 6 states have (on average 325.0) internal successors, (1950), 6 states have internal predecessors, (1950), 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) [2023-11-06 22:39:29,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:39:29,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 321 of 731 [2023-11-06 22:39:29,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:39:30,452 INFO L124 PetriNetUnfolderBase]: 3802/6517 cut-off events. [2023-11-06 22:39:30,452 INFO L125 PetriNetUnfolderBase]: For 24759/26555 co-relation queries the response was YES. [2023-11-06 22:39:30,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27848 conditions, 6517 events. 3802/6517 cut-off events. For 24759/26555 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 40335 event pairs, 723 based on Foata normal form. 2048/8321 useless extension candidates. Maximal degree in co-relation 27817. Up to 2387 conditions per place. [2023-11-06 22:39:30,497 INFO L140 encePairwiseOnDemand]: 727/731 looper letters, 208 selfloop transitions, 17 changer transitions 0/230 dead transitions. [2023-11-06 22:39:30,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 230 transitions, 2267 flow [2023-11-06 22:39:30,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:39:30,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:39:30,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2010 transitions. [2023-11-06 22:39:30,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4582763337893297 [2023-11-06 22:39:30,503 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2010 transitions. [2023-11-06 22:39:30,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2010 transitions. [2023-11-06 22:39:30,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:39:30,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2010 transitions. [2023-11-06 22:39:30,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 335.0) internal successors, (2010), 6 states have internal predecessors, (2010), 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) [2023-11-06 22:39:30,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 731.0) internal successors, (5117), 7 states have internal predecessors, (5117), 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) [2023-11-06 22:39:30,509 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 731.0) internal successors, (5117), 7 states have internal predecessors, (5117), 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) [2023-11-06 22:39:30,509 INFO L175 Difference]: Start difference. First operand has 100 places, 153 transitions, 1228 flow. Second operand 6 states and 2010 transitions. [2023-11-06 22:39:30,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 230 transitions, 2267 flow [2023-11-06 22:39:30,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 230 transitions, 2235 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-11-06 22:39:30,549 INFO L231 Difference]: Finished difference. Result has 107 places, 162 transitions, 1362 flow [2023-11-06 22:39:30,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=731, PETRI_DIFFERENCE_MINUEND_FLOW=1211, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1362, PETRI_PLACES=107, PETRI_TRANSITIONS=162} [2023-11-06 22:39:30,549 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 54 predicate places. [2023-11-06 22:39:30,550 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 162 transitions, 1362 flow [2023-11-06 22:39:30,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 325.0) internal successors, (1950), 6 states have internal predecessors, (1950), 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) [2023-11-06 22:39:30,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:39:30,550 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:39:30,555 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-11-06 22:39:30,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:39:30,751 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-06 22:39:30,751 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:39:30,751 INFO L85 PathProgramCache]: Analyzing trace with hash -313492289, now seen corresponding path program 1 times [2023-11-06 22:39:30,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:39:30,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351889853] [2023-11-06 22:39:30,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:39:30,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:39:30,769 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:39:30,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1460880020] [2023-11-06 22:39:30,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:39:30,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:39:30,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:39:30,771 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:39:30,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-11-06 22:39:31,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:31,078 INFO L262 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-06 22:39:31,079 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:39:31,459 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-06 22:39:31,459 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:39:31,610 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-06 22:39:31,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:39:31,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351889853] [2023-11-06 22:39:31,610 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:39:31,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460880020] [2023-11-06 22:39:31,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460880020] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:39:31,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:39:31,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 13 [2023-11-06 22:39:31,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085617197] [2023-11-06 22:39:31,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:39:31,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:39:31,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:39:31,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:39:31,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:39:32,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 731 [2023-11-06 22:39:32,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 162 transitions, 1362 flow. Second operand has 8 states, 8 states have (on average 288.375) internal successors, (2307), 8 states have internal predecessors, (2307), 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) [2023-11-06 22:39:32,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:39:32,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 731 [2023-11-06 22:39:32,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:39:33,706 INFO L124 PetriNetUnfolderBase]: 3942/6817 cut-off events. [2023-11-06 22:39:33,706 INFO L125 PetriNetUnfolderBase]: For 28585/30681 co-relation queries the response was YES. [2023-11-06 22:39:33,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29687 conditions, 6817 events. 3942/6817 cut-off events. For 28585/30681 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 42984 event pairs, 2862 based on Foata normal form. 2098/8685 useless extension candidates. Maximal degree in co-relation 29652. Up to 6454 conditions per place. [2023-11-06 22:39:33,745 INFO L140 encePairwiseOnDemand]: 723/731 looper letters, 167 selfloop transitions, 27 changer transitions 3/202 dead transitions. [2023-11-06 22:39:33,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 202 transitions, 2061 flow [2023-11-06 22:39:33,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:39:33,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 22:39:33,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2341 transitions. [2023-11-06 22:39:33,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4003077975376197 [2023-11-06 22:39:33,749 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2341 transitions. [2023-11-06 22:39:33,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2341 transitions. [2023-11-06 22:39:33,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:39:33,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2341 transitions. [2023-11-06 22:39:33,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 292.625) internal successors, (2341), 8 states have internal predecessors, (2341), 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) [2023-11-06 22:39:33,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 731.0) internal successors, (6579), 9 states have internal predecessors, (6579), 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) [2023-11-06 22:39:33,760 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 731.0) internal successors, (6579), 9 states have internal predecessors, (6579), 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) [2023-11-06 22:39:33,760 INFO L175 Difference]: Start difference. First operand has 107 places, 162 transitions, 1362 flow. Second operand 8 states and 2341 transitions. [2023-11-06 22:39:33,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 202 transitions, 2061 flow [2023-11-06 22:39:33,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 202 transitions, 2051 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:39:33,816 INFO L231 Difference]: Finished difference. Result has 115 places, 172 transitions, 1566 flow [2023-11-06 22:39:33,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=731, PETRI_DIFFERENCE_MINUEND_FLOW=1356, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1566, PETRI_PLACES=115, PETRI_TRANSITIONS=172} [2023-11-06 22:39:33,817 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 62 predicate places. [2023-11-06 22:39:33,818 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 172 transitions, 1566 flow [2023-11-06 22:39:33,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 288.375) internal successors, (2307), 8 states have internal predecessors, (2307), 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) [2023-11-06 22:39:33,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:39:33,818 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:39:33,825 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2023-11-06 22:39:34,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-11-06 22:39:34,026 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-06 22:39:34,026 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:39:34,026 INFO L85 PathProgramCache]: Analyzing trace with hash -267074818, now seen corresponding path program 1 times [2023-11-06 22:39:34,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:39:34,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960023333] [2023-11-06 22:39:34,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:39:34,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:39:34,046 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:39:34,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1954678173] [2023-11-06 22:39:34,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:39:34,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:39:34,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:39:34,048 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:39:34,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-11-06 22:39:34,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:34,323 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:39:34,324 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:39:34,349 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-06 22:39:34,349 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:39:34,380 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-06 22:39:34,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:39:34,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960023333] [2023-11-06 22:39:34,380 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:39:34,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954678173] [2023-11-06 22:39:34,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954678173] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:39:34,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:39:34,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-06 22:39:34,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579712380] [2023-11-06 22:39:34,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:39:34,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:39:34,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:39:34,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:39:34,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:39:34,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 298 out of 731 [2023-11-06 22:39:34,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 172 transitions, 1566 flow. Second operand has 5 states, 5 states have (on average 301.4) internal successors, (1507), 5 states have internal predecessors, (1507), 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) [2023-11-06 22:39:34,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:39:34,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 298 of 731 [2023-11-06 22:39:34,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:39:35,486 INFO L124 PetriNetUnfolderBase]: 3293/5529 cut-off events. [2023-11-06 22:39:35,486 INFO L125 PetriNetUnfolderBase]: For 20937/22081 co-relation queries the response was YES. [2023-11-06 22:39:35,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23786 conditions, 5529 events. 3293/5529 cut-off events. For 20937/22081 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 32082 event pairs, 2343 based on Foata normal form. 1146/6489 useless extension candidates. Maximal degree in co-relation 23748. Up to 5248 conditions per place. [2023-11-06 22:39:35,519 INFO L140 encePairwiseOnDemand]: 726/731 looper letters, 171 selfloop transitions, 15 changer transitions 0/191 dead transitions. [2023-11-06 22:39:35,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 191 transitions, 1978 flow [2023-11-06 22:39:35,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:39:35,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:39:35,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1542 transitions. [2023-11-06 22:39:35,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42188782489740084 [2023-11-06 22:39:35,523 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1542 transitions. [2023-11-06 22:39:35,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1542 transitions. [2023-11-06 22:39:35,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:39:35,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1542 transitions. [2023-11-06 22:39:35,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 308.4) internal successors, (1542), 5 states have internal predecessors, (1542), 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) [2023-11-06 22:39:35,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 731.0) internal successors, (4386), 6 states have internal predecessors, (4386), 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) [2023-11-06 22:39:35,528 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 731.0) internal successors, (4386), 6 states have internal predecessors, (4386), 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) [2023-11-06 22:39:35,528 INFO L175 Difference]: Start difference. First operand has 115 places, 172 transitions, 1566 flow. Second operand 5 states and 1542 transitions. [2023-11-06 22:39:35,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 191 transitions, 1978 flow [2023-11-06 22:39:35,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 191 transitions, 1952 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-11-06 22:39:35,561 INFO L231 Difference]: Finished difference. Result has 113 places, 165 transitions, 1476 flow [2023-11-06 22:39:35,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=731, PETRI_DIFFERENCE_MINUEND_FLOW=1446, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1476, PETRI_PLACES=113, PETRI_TRANSITIONS=165} [2023-11-06 22:39:35,561 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 60 predicate places. [2023-11-06 22:39:35,561 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 165 transitions, 1476 flow [2023-11-06 22:39:35,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 301.4) internal successors, (1507), 5 states have internal predecessors, (1507), 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) [2023-11-06 22:39:35,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:39:35,562 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:39:35,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2023-11-06 22:39:35,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-11-06 22:39:35,769 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-06 22:39:35,770 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:39:35,770 INFO L85 PathProgramCache]: Analyzing trace with hash -315402373, now seen corresponding path program 1 times [2023-11-06 22:39:35,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:39:35,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619060126] [2023-11-06 22:39:35,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:39:35,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:39:35,791 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:39:35,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1639891576] [2023-11-06 22:39:35,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:39:35,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:39:35,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:39:35,793 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:39:35,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-11-06 22:39:36,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:36,193 INFO L262 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-06 22:39:36,194 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:39:36,284 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:39:36,284 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:39:37,630 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:39:37,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:39:37,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619060126] [2023-11-06 22:39:37,631 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:39:37,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639891576] [2023-11-06 22:39:37,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639891576] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:39:37,631 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:39:37,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-11-06 22:39:37,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373983809] [2023-11-06 22:39:37,632 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:39:37,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 22:39:37,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:39:37,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 22:39:37,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:39:50,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 731 [2023-11-06 22:39:50,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 165 transitions, 1476 flow. Second operand has 14 states, 14 states have (on average 290.92857142857144) internal successors, (4073), 14 states have internal predecessors, (4073), 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) [2023-11-06 22:39:50,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:39:50,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 731 [2023-11-06 22:39:50,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:39:52,630 INFO L124 PetriNetUnfolderBase]: 3266/5460 cut-off events. [2023-11-06 22:39:52,630 INFO L125 PetriNetUnfolderBase]: For 21066/22076 co-relation queries the response was YES. [2023-11-06 22:39:52,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23549 conditions, 5460 events. 3266/5460 cut-off events. For 21066/22076 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 31428 event pairs, 249 based on Foata normal form. 1010/6429 useless extension candidates. Maximal degree in co-relation 23513. Up to 3411 conditions per place. [2023-11-06 22:39:52,675 INFO L140 encePairwiseOnDemand]: 721/731 looper letters, 188 selfloop transitions, 48 changer transitions 5/244 dead transitions. [2023-11-06 22:39:52,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 244 transitions, 2488 flow [2023-11-06 22:39:52,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:39:52,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 22:39:52,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3535 transitions. [2023-11-06 22:39:52,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40298677610579114 [2023-11-06 22:39:52,682 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3535 transitions. [2023-11-06 22:39:52,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3535 transitions. [2023-11-06 22:39:52,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:39:52,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3535 transitions. [2023-11-06 22:39:52,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 294.5833333333333) internal successors, (3535), 12 states have internal predecessors, (3535), 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) [2023-11-06 22:39:52,731 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 731.0) internal successors, (9503), 13 states have internal predecessors, (9503), 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) [2023-11-06 22:39:52,733 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 731.0) internal successors, (9503), 13 states have internal predecessors, (9503), 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) [2023-11-06 22:39:52,733 INFO L175 Difference]: Start difference. First operand has 113 places, 165 transitions, 1476 flow. Second operand 12 states and 3535 transitions. [2023-11-06 22:39:52,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 244 transitions, 2488 flow [2023-11-06 22:39:52,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 244 transitions, 2484 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-06 22:39:52,796 INFO L231 Difference]: Finished difference. Result has 126 places, 186 transitions, 1825 flow [2023-11-06 22:39:52,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=731, PETRI_DIFFERENCE_MINUEND_FLOW=1464, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1825, PETRI_PLACES=126, PETRI_TRANSITIONS=186} [2023-11-06 22:39:52,796 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 73 predicate places. [2023-11-06 22:39:52,797 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 186 transitions, 1825 flow [2023-11-06 22:39:52,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 290.92857142857144) internal successors, (4073), 14 states have internal predecessors, (4073), 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) [2023-11-06 22:39:52,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:39:52,798 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:39:52,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2023-11-06 22:39:53,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-11-06 22:39:53,006 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-06 22:39:53,006 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:39:53,006 INFO L85 PathProgramCache]: Analyzing trace with hash -315402472, now seen corresponding path program 1 times [2023-11-06 22:39:53,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:39:53,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140505933] [2023-11-06 22:39:53,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:39:53,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:39:53,035 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:39:53,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1286975906] [2023-11-06 22:39:53,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:39:53,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:39:53,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:39:53,037 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:39:53,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-11-06 22:39:53,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:39:53,481 INFO L262 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:39:53,482 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:39:53,553 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-06 22:39:53,553 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:39:53,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:39:53,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140505933] [2023-11-06 22:39:53,554 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:39:53,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286975906] [2023-11-06 22:39:53,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286975906] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:39:53,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:39:53,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:39:53,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900446138] [2023-11-06 22:39:53,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:39:53,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:39:53,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:39:53,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:39:53,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:39:53,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 317 out of 731 [2023-11-06 22:39:53,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 186 transitions, 1825 flow. Second operand has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 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) [2023-11-06 22:39:53,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:39:53,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 317 of 731 [2023-11-06 22:39:53,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:39:54,630 INFO L124 PetriNetUnfolderBase]: 2848/4776 cut-off events. [2023-11-06 22:39:54,631 INFO L125 PetriNetUnfolderBase]: For 20609/21499 co-relation queries the response was YES. [2023-11-06 22:39:54,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21594 conditions, 4776 events. 2848/4776 cut-off events. For 20609/21499 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 26712 event pairs, 114 based on Foata normal form. 1022/5779 useless extension candidates. Maximal degree in co-relation 21555. Up to 2399 conditions per place. [2023-11-06 22:39:54,662 INFO L140 encePairwiseOnDemand]: 726/731 looper letters, 173 selfloop transitions, 9 changer transitions 33/218 dead transitions. [2023-11-06 22:39:54,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 218 transitions, 2489 flow [2023-11-06 22:39:54,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:39:54,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:39:54,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1636 transitions. [2023-11-06 22:39:54,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4476060191518468 [2023-11-06 22:39:54,666 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1636 transitions. [2023-11-06 22:39:54,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1636 transitions. [2023-11-06 22:39:54,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:39:54,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1636 transitions. [2023-11-06 22:39:54,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 327.2) internal successors, (1636), 5 states have internal predecessors, (1636), 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) [2023-11-06 22:39:54,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 731.0) internal successors, (4386), 6 states have internal predecessors, (4386), 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) [2023-11-06 22:39:54,672 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 731.0) internal successors, (4386), 6 states have internal predecessors, (4386), 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) [2023-11-06 22:39:54,672 INFO L175 Difference]: Start difference. First operand has 126 places, 186 transitions, 1825 flow. Second operand 5 states and 1636 transitions. [2023-11-06 22:39:54,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 218 transitions, 2489 flow [2023-11-06 22:39:54,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 218 transitions, 2443 flow, removed 12 selfloop flow, removed 5 redundant places. [2023-11-06 22:39:54,709 INFO L231 Difference]: Finished difference. Result has 124 places, 151 transitions, 1405 flow [2023-11-06 22:39:54,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=731, PETRI_DIFFERENCE_MINUEND_FLOW=1754, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1405, PETRI_PLACES=124, PETRI_TRANSITIONS=151} [2023-11-06 22:39:54,710 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 71 predicate places. [2023-11-06 22:39:54,710 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 151 transitions, 1405 flow [2023-11-06 22:39:54,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 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) [2023-11-06 22:39:54,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:39:54,711 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:39:54,717 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2023-11-06 22:39:54,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-11-06 22:39:54,911 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-06 22:39:54,911 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:39:54,912 INFO L85 PathProgramCache]: Analyzing trace with hash 602468939, now seen corresponding path program 2 times [2023-11-06 22:39:54,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:39:54,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519257392] [2023-11-06 22:39:54,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:39:54,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:39:54,938 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:39:54,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [767667646] [2023-11-06 22:39:54,939 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:39:54,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:39:54,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:39:54,940 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:39:54,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-11-06 22:39:58,309 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:39:58,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:39:58,313 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-06 22:39:58,314 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:40:23,222 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-06 22:40:23,222 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:40:23,570 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-06 22:40:23,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:40:23,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519257392] [2023-11-06 22:40:23,571 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:40:23,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767667646] [2023-11-06 22:40:23,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767667646] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:40:23,571 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:40:23,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-11-06 22:40:23,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557012543] [2023-11-06 22:40:23,572 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:40:23,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:40:23,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:40:23,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:40:23,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:40:26,113 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:40:28,229 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:40:30,598 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:40:32,611 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:40:34,784 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:40:36,959 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:40:39,029 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:40:41,244 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:40:43,562 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-06 22:40:43,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 297 out of 731 [2023-11-06 22:40:43,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 151 transitions, 1405 flow. Second operand has 6 states, 6 states have (on average 303.6666666666667) internal successors, (1822), 6 states have internal predecessors, (1822), 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) [2023-11-06 22:40:43,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:40:43,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 297 of 731 [2023-11-06 22:40:43,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:40:45,618 INFO L124 PetriNetUnfolderBase]: 2219/3677 cut-off events. [2023-11-06 22:40:45,618 INFO L125 PetriNetUnfolderBase]: For 16883/17603 co-relation queries the response was YES. [2023-11-06 22:40:45,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16671 conditions, 3677 events. 2219/3677 cut-off events. For 16883/17603 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 19295 event pairs, 72 based on Foata normal form. 832/4500 useless extension candidates. Maximal degree in co-relation 16633. Up to 2904 conditions per place. [2023-11-06 22:40:45,647 INFO L140 encePairwiseOnDemand]: 722/731 looper letters, 154 selfloop transitions, 13 changer transitions 3/173 dead transitions. [2023-11-06 22:40:45,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 173 transitions, 1913 flow [2023-11-06 22:40:45,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:40:45,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:40:45,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1528 transitions. [2023-11-06 22:40:45,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41805745554035567 [2023-11-06 22:40:45,651 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1528 transitions. [2023-11-06 22:40:45,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1528 transitions. [2023-11-06 22:40:45,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:40:45,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1528 transitions. [2023-11-06 22:40:45,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 305.6) internal successors, (1528), 5 states have internal predecessors, (1528), 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) [2023-11-06 22:40:45,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 731.0) internal successors, (4386), 6 states have internal predecessors, (4386), 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) [2023-11-06 22:40:45,659 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 731.0) internal successors, (4386), 6 states have internal predecessors, (4386), 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) [2023-11-06 22:40:45,659 INFO L175 Difference]: Start difference. First operand has 124 places, 151 transitions, 1405 flow. Second operand 5 states and 1528 transitions. [2023-11-06 22:40:45,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 173 transitions, 1913 flow [2023-11-06 22:40:45,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 173 transitions, 1806 flow, removed 40 selfloop flow, removed 10 redundant places. [2023-11-06 22:40:45,693 INFO L231 Difference]: Finished difference. Result has 106 places, 144 transitions, 1283 flow [2023-11-06 22:40:45,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=731, PETRI_DIFFERENCE_MINUEND_FLOW=1276, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1283, PETRI_PLACES=106, PETRI_TRANSITIONS=144} [2023-11-06 22:40:45,693 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 53 predicate places. [2023-11-06 22:40:45,694 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 144 transitions, 1283 flow [2023-11-06 22:40:45,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 303.6666666666667) internal successors, (1822), 6 states have internal predecessors, (1822), 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) [2023-11-06 22:40:45,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:40:45,694 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:40:45,702 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2023-11-06 22:40:45,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-11-06 22:40:45,895 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-11-06 22:40:45,895 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:40:45,895 INFO L85 PathProgramCache]: Analyzing trace with hash -975937598, now seen corresponding path program 2 times [2023-11-06 22:40:45,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:40:45,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040240381] [2023-11-06 22:40:45,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:40:45,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:40:45,915 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:40:45,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [21837926] [2023-11-06 22:40:45,916 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:40:45,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:40:45,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:40:45,917 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:40:45,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-11-06 22:40:46,203 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:40:46,203 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:40:46,205 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:40:46,205 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:40:46,273 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-06 22:40:46,273 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:40:46,374 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-06 22:40:46,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:40:46,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040240381] [2023-11-06 22:40:46,374 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:40:46,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21837926] [2023-11-06 22:40:46,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21837926] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:40:46,375 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:40:46,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2023-11-06 22:40:46,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763416189] [2023-11-06 22:40:46,375 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:40:46,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:40:46,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:40:46,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:40:46,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:40:46,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 317 out of 731 [2023-11-06 22:40:46,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 144 transitions, 1283 flow. Second operand has 4 states, 4 states have (on average 321.25) internal successors, (1285), 4 states have internal predecessors, (1285), 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) [2023-11-06 22:40:46,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:40:46,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 317 of 731 [2023-11-06 22:40:46,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:40:47,144 INFO L124 PetriNetUnfolderBase]: 1987/3313 cut-off events. [2023-11-06 22:40:47,144 INFO L125 PetriNetUnfolderBase]: For 13716/14376 co-relation queries the response was YES. [2023-11-06 22:40:47,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13874 conditions, 3313 events. 1987/3313 cut-off events. For 13716/14376 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 17262 event pairs, 420 based on Foata normal form. 732/4020 useless extension candidates. Maximal degree in co-relation 13843. Up to 1947 conditions per place. [2023-11-06 22:40:47,166 INFO L140 encePairwiseOnDemand]: 726/731 looper letters, 0 selfloop transitions, 0 changer transitions 156/156 dead transitions. [2023-11-06 22:40:47,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 156 transitions, 1670 flow [2023-11-06 22:40:47,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:40:47,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:40:47,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1299 transitions. [2023-11-06 22:40:47,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4442544459644323 [2023-11-06 22:40:47,170 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1299 transitions. [2023-11-06 22:40:47,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1299 transitions. [2023-11-06 22:40:47,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:40:47,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1299 transitions. [2023-11-06 22:40:47,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 324.75) internal successors, (1299), 4 states have internal predecessors, (1299), 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) [2023-11-06 22:40:47,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 731.0) internal successors, (3655), 5 states have internal predecessors, (3655), 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) [2023-11-06 22:40:47,177 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 731.0) internal successors, (3655), 5 states have internal predecessors, (3655), 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) [2023-11-06 22:40:47,177 INFO L175 Difference]: Start difference. First operand has 106 places, 144 transitions, 1283 flow. Second operand 4 states and 1299 transitions. [2023-11-06 22:40:47,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 156 transitions, 1670 flow [2023-11-06 22:40:47,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 156 transitions, 1623 flow, removed 3 selfloop flow, removed 8 redundant places. [2023-11-06 22:40:47,199 INFO L231 Difference]: Finished difference. Result has 98 places, 0 transitions, 0 flow [2023-11-06 22:40:47,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=731, PETRI_DIFFERENCE_MINUEND_FLOW=1226, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=98, PETRI_TRANSITIONS=0} [2023-11-06 22:40:47,200 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 45 predicate places. [2023-11-06 22:40:47,200 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 0 transitions, 0 flow [2023-11-06 22:40:47,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 321.25) internal successors, (1285), 4 states have internal predecessors, (1285), 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) [2023-11-06 22:40:47,203 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 38 remaining) [2023-11-06 22:40:47,204 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 38 remaining) [2023-11-06 22:40:47,204 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 38 remaining) [2023-11-06 22:40:47,204 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 38 remaining) [2023-11-06 22:40:47,205 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 38 remaining) [2023-11-06 22:40:47,205 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 38 remaining) [2023-11-06 22:40:47,205 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 38 remaining) [2023-11-06 22:40:47,205 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 38 remaining) [2023-11-06 22:40:47,205 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 38 remaining) [2023-11-06 22:40:47,206 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 38 remaining) [2023-11-06 22:40:47,206 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 38 remaining) [2023-11-06 22:40:47,206 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 38 remaining) [2023-11-06 22:40:47,206 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 38 remaining) [2023-11-06 22:40:47,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 38 remaining) [2023-11-06 22:40:47,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 38 remaining) [2023-11-06 22:40:47,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 38 remaining) [2023-11-06 22:40:47,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 38 remaining) [2023-11-06 22:40:47,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 38 remaining) [2023-11-06 22:40:47,208 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 38 remaining) [2023-11-06 22:40:47,208 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 38 remaining) [2023-11-06 22:40:47,208 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 38 remaining) [2023-11-06 22:40:47,208 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 38 remaining) [2023-11-06 22:40:47,208 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 38 remaining) [2023-11-06 22:40:47,209 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 38 remaining) [2023-11-06 22:40:47,209 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 38 remaining) [2023-11-06 22:40:47,209 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 38 remaining) [2023-11-06 22:40:47,209 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 38 remaining) [2023-11-06 22:40:47,209 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 38 remaining) [2023-11-06 22:40:47,210 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 38 remaining) [2023-11-06 22:40:47,210 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 38 remaining) [2023-11-06 22:40:47,210 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 38 remaining) [2023-11-06 22:40:47,210 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 38 remaining) [2023-11-06 22:40:47,210 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 38 remaining) [2023-11-06 22:40:47,211 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 38 remaining) [2023-11-06 22:40:47,211 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 38 remaining) [2023-11-06 22:40:47,211 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 38 remaining) [2023-11-06 22:40:47,211 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 38 remaining) [2023-11-06 22:40:47,211 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 38 remaining) [2023-11-06 22:40:47,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2023-11-06 22:40:47,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-11-06 22:40:47,418 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:40:47,429 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 22:40:47,429 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 22:40:47,441 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:40:47 BasicIcfg [2023-11-06 22:40:47,441 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 22:40:47,442 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:40:47,442 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:40:47,442 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:40:47,443 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:38:09" (3/4) ... [2023-11-06 22:40:47,445 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 22:40:47,450 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-06 22:40:47,450 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-06 22:40:47,475 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 29 nodes and edges [2023-11-06 22:40:47,477 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-06 22:40:47,477 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 22:40:47,479 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 22:40:47,572 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 22:40:47,573 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.yaml [2023-11-06 22:40:47,573 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:40:47,574 INFO L158 Benchmark]: Toolchain (without parser) took 160358.97ms. Allocated memory was 199.2MB in the beginning and 1.1GB in the end (delta: 950.0MB). Free memory was 168.2MB in the beginning and 772.9MB in the end (delta: -604.7MB). Peak memory consumption was 347.3MB. Max. memory is 16.1GB. [2023-11-06 22:40:47,574 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 109.1MB. Free memory was 76.3MB in the beginning and 76.3MB in the end (delta: 30.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:40:47,574 INFO L158 Benchmark]: CACSL2BoogieTranslator took 501.14ms. Allocated memory is still 199.2MB. Free memory was 168.2MB in the beginning and 155.8MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-06 22:40:47,575 INFO L158 Benchmark]: Boogie Procedure Inliner took 99.65ms. Allocated memory is still 199.2MB. Free memory was 155.8MB in the beginning and 153.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:40:47,575 INFO L158 Benchmark]: Boogie Preprocessor took 99.85ms. Allocated memory is still 199.2MB. Free memory was 153.7MB in the beginning and 151.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:40:47,576 INFO L158 Benchmark]: RCFGBuilder took 1111.51ms. Allocated memory is still 199.2MB. Free memory was 151.6MB in the beginning and 124.4MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2023-11-06 22:40:47,577 INFO L158 Benchmark]: TraceAbstraction took 158406.83ms. Allocated memory was 199.2MB in the beginning and 1.1GB in the end (delta: 950.0MB). Free memory was 123.2MB in the beginning and 779.2MB in the end (delta: -656.0MB). Peak memory consumption was 294.9MB. Max. memory is 16.1GB. [2023-11-06 22:40:47,578 INFO L158 Benchmark]: Witness Printer took 131.54ms. Allocated memory is still 1.1GB. Free memory was 779.2MB in the beginning and 772.9MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-06 22:40:47,581 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 109.1MB. Free memory was 76.3MB in the beginning and 76.3MB in the end (delta: 30.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 501.14ms. Allocated memory is still 199.2MB. Free memory was 168.2MB in the beginning and 155.8MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 99.65ms. Allocated memory is still 199.2MB. Free memory was 155.8MB in the beginning and 153.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 99.85ms. Allocated memory is still 199.2MB. Free memory was 153.7MB in the beginning and 151.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1111.51ms. Allocated memory is still 199.2MB. Free memory was 151.6MB in the beginning and 124.4MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 158406.83ms. Allocated memory was 199.2MB in the beginning and 1.1GB in the end (delta: 950.0MB). Free memory was 123.2MB in the beginning and 779.2MB in the end (delta: -656.0MB). Peak memory consumption was 294.9MB. Max. memory is 16.1GB. * Witness Printer took 131.54ms. Allocated memory is still 1.1GB. Free memory was 779.2MB in the beginning and 772.9MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 32.3s, 300 PlacesBefore, 53 PlacesAfterwards, 319 TransitionsBefore, 53 TransitionsAfterwards, 2100 CoEnabledTransitionPairs, 8 FixpointIterations, 258 TrivialSequentialCompositions, 55 ConcurrentSequentialCompositions, 45 TrivialYvCompositions, 6 ConcurrentYvCompositions, 19 ChoiceCompositions, 383 TotalNumberOfCompositions, 3793 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2272, independent: 2143, independent conditional: 0, independent unconditional: 2143, dependent: 129, dependent conditional: 0, dependent unconditional: 129, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1122, independent: 1092, independent conditional: 0, independent unconditional: 1092, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2272, independent: 1051, independent conditional: 0, independent unconditional: 1051, dependent: 99, dependent conditional: 0, dependent unconditional: 99, unknown: 1122, unknown conditional: 0, unknown unconditional: 1122] , Statistics on independence cache: Total cache size (in pairs): 74, Positive cache size: 63, Positive conditional cache size: 0, Positive unconditional cache size: 63, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 48]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 48]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 57]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 57]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 74]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 74]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 75]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 75]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 104]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 104]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 104]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 104]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 104]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 104]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 80]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 80]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 93]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 93]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 93]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 93]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 376 locations, 38 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 158.2s, OverallIterations: 38, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 73.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 32.5s, HoareTripleCheckerStatistics: 8 mSolverCounterUnknown, 7284 SdHoareTripleChecker+Valid, 49.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5115 mSDsluCounter, 2466 SdHoareTripleChecker+Invalid, 47.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1810 mSDsCounter, 435 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 13847 IncrementalHoareTripleChecker+Invalid, 14290 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 435 mSolverCounterUnsat, 656 mSDtfsCounter, 13847 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 719 GetRequests, 530 SyntacticMatches, 14 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 4.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1825occurred in iteration=35, InterpolantAutomatonStates: 196, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.9s SsaConstructionTime, 5.0s SatisfiabilityAnalysisTime, 32.9s InterpolantComputationTime, 475 NumberOfCodeBlocks, 396 NumberOfCodeBlocksAsserted, 38 NumberOfCheckSat, 684 ConstructedInterpolants, 68 QuantifiedInterpolants, 3486 SizeOfPredicates, 66 NumberOfNonLiveVariables, 7935 ConjunctsInSsa, 238 ConjunctsInUnsatCore, 55 InterpolantComputations, 24 PerfectInterpolantSequences, 426/510 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 26 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-06 22:40:47,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bf01a6b-3805-45df-8fbd-530afe6d4d6e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE