./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-word-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e413ee5c-96db-4f1f-943a-6b5421f31779/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e413ee5c-96db-4f1f-943a-6b5421f31779/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e413ee5c-96db-4f1f-943a-6b5421f31779/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e413ee5c-96db-4f1f-943a-6b5421f31779/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-word-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e413ee5c-96db-4f1f-943a-6b5421f31779/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e413ee5c-96db-4f1f-943a-6b5421f31779/bin/uautomizer-verify-uTZkv6EMXl --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9cb2b0cbecf02e8cce2fd890595fb88c3204482a27ce7ac6f4ef6fb92949d747 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:06:58,702 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:06:58,822 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e413ee5c-96db-4f1f-943a-6b5421f31779/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-12 02:06:58,828 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:06:58,829 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:06:58,869 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:06:58,871 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:06:58,872 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:06:58,873 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:06:58,880 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:06:58,881 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:06:58,881 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:06:58,882 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:06:58,884 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:06:58,884 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:06:58,885 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:06:58,885 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:06:58,885 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:06:58,886 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:06:58,886 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:06:58,887 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:06:58,887 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:06:58,888 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-12 02:06:58,888 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:06:58,889 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:06:58,889 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:06:58,889 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:06:58,890 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:06:58,891 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:06:58,891 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:06:58,893 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:06:58,893 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:06:58,893 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:06:58,893 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:06:58,894 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:06:58,894 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:06:58,894 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:06:58,894 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:06:58,895 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:06:58,895 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:06:58,895 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:06:58,896 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_e413ee5c-96db-4f1f-943a-6b5421f31779/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e413ee5c-96db-4f1f-943a-6b5421f31779/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9cb2b0cbecf02e8cce2fd890595fb88c3204482a27ce7ac6f4ef6fb92949d747 [2023-11-12 02:06:59,163 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:06:59,185 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:06:59,188 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:06:59,189 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:06:59,190 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:06:59,191 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e413ee5c-96db-4f1f-943a-6b5421f31779/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/weaver/chl-word-trans.wvr.c [2023-11-12 02:07:02,573 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:07:02,818 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:07:02,819 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e413ee5c-96db-4f1f-943a-6b5421f31779/sv-benchmarks/c/weaver/chl-word-trans.wvr.c [2023-11-12 02:07:02,830 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e413ee5c-96db-4f1f-943a-6b5421f31779/bin/uautomizer-verify-uTZkv6EMXl/data/25d7a92c0/f8a3ad4728d44c508611f7c15c4a87bb/FLAG451f14e28 [2023-11-12 02:07:02,845 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e413ee5c-96db-4f1f-943a-6b5421f31779/bin/uautomizer-verify-uTZkv6EMXl/data/25d7a92c0/f8a3ad4728d44c508611f7c15c4a87bb [2023-11-12 02:07:02,848 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:07:02,850 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:07:02,852 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:07:02,852 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:07:02,858 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:07:02,859 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:07:02" (1/1) ... [2023-11-12 02:07:02,861 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@113abd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:02, skipping insertion in model container [2023-11-12 02:07:02,861 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:07:02" (1/1) ... [2023-11-12 02:07:02,899 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:07:03,122 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:07:03,135 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:07:03,191 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:07:03,222 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:07:03,222 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:03 WrapperNode [2023-11-12 02:07:03,222 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:07:03,224 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:07:03,224 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:07:03,225 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:07:03,233 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:03" (1/1) ... [2023-11-12 02:07:03,244 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:03" (1/1) ... [2023-11-12 02:07:03,281 INFO L138 Inliner]: procedures = 25, calls = 45, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 191 [2023-11-12 02:07:03,281 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:07:03,282 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:07:03,282 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:07:03,283 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:07:03,293 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:03" (1/1) ... [2023-11-12 02:07:03,293 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:03" (1/1) ... [2023-11-12 02:07:03,311 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:03" (1/1) ... [2023-11-12 02:07:03,311 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:03" (1/1) ... [2023-11-12 02:07:03,323 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:03" (1/1) ... [2023-11-12 02:07:03,329 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:03" (1/1) ... [2023-11-12 02:07:03,332 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:03" (1/1) ... [2023-11-12 02:07:03,335 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:03" (1/1) ... [2023-11-12 02:07:03,340 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:07:03,341 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:07:03,341 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:07:03,342 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:07:03,343 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:03" (1/1) ... [2023-11-12 02:07:03,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:07:03,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e413ee5c-96db-4f1f-943a-6b5421f31779/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:07:03,386 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e413ee5c-96db-4f1f-943a-6b5421f31779/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:07:03,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e413ee5c-96db-4f1f-943a-6b5421f31779/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:07:03,448 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:07:03,448 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:07:03,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:07:03,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:07:03,450 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-12 02:07:03,450 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-12 02:07:03,450 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-12 02:07:03,452 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-12 02:07:03,452 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-12 02:07:03,453 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-12 02:07:03,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:07:03,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 02:07:03,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:07:03,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:07:03,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:07:03,459 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:07:03,598 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:07:03,600 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:07:04,276 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:07:04,297 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:07:04,298 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-12 02:07:04,301 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:07:04 BoogieIcfgContainer [2023-11-12 02:07:04,301 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:07:04,305 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:07:04,305 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:07:04,309 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:07:04,310 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:07:02" (1/3) ... [2023-11-12 02:07:04,310 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f69808a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:07:04, skipping insertion in model container [2023-11-12 02:07:04,311 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:07:03" (2/3) ... [2023-11-12 02:07:04,311 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f69808a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:07:04, skipping insertion in model container [2023-11-12 02:07:04,312 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:07:04" (3/3) ... [2023-11-12 02:07:04,319 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-trans.wvr.c [2023-11-12 02:07:04,330 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:07:04,340 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:07:04,341 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-11-12 02:07:04,341 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:07:04,496 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-12 02:07:04,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 336 places, 354 transitions, 729 flow [2023-11-12 02:07:04,791 INFO L124 PetriNetUnfolderBase]: 28/351 cut-off events. [2023-11-12 02:07:04,791 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-12 02:07:04,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 364 conditions, 351 events. 28/351 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 569 event pairs, 0 based on Foata normal form. 0/305 useless extension candidates. Maximal degree in co-relation 281. Up to 3 conditions per place. [2023-11-12 02:07:04,806 INFO L82 GeneralOperation]: Start removeDead. Operand has 336 places, 354 transitions, 729 flow [2023-11-12 02:07:04,823 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 310 places, 327 transitions, 669 flow [2023-11-12 02:07:04,828 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:07:04,855 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 310 places, 327 transitions, 669 flow [2023-11-12 02:07:04,858 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 310 places, 327 transitions, 669 flow [2023-11-12 02:07:04,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 310 places, 327 transitions, 669 flow [2023-11-12 02:07:04,936 INFO L124 PetriNetUnfolderBase]: 27/327 cut-off events. [2023-11-12 02:07:04,936 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 02:07:04,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 339 conditions, 327 events. 27/327 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 567 event pairs, 0 based on Foata normal form. 0/282 useless extension candidates. Maximal degree in co-relation 281. Up to 3 conditions per place. [2023-11-12 02:07:04,954 INFO L119 LiptonReduction]: Number of co-enabled transitions 12480 [2023-11-12 02:07:19,290 INFO L134 LiptonReduction]: Checked pairs total: 18043 [2023-11-12 02:07:19,290 INFO L136 LiptonReduction]: Total number of compositions: 361 [2023-11-12 02:07:19,307 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:07:19,315 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@276acb2b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:07:19,315 INFO L358 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2023-11-12 02:07:19,318 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:07:19,319 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-12 02:07:19,319 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:07:19,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:07:19,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-12 02:07:19,320 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-12 02:07:19,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:19,326 INFO L85 PathProgramCache]: Analyzing trace with hash 42901, now seen corresponding path program 1 times [2023-11-12 02:07:19,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:19,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639548724] [2023-11-12 02:07:19,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:19,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:19,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:19,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:07:19,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:19,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639548724] [2023-11-12 02:07:19,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639548724] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:19,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:19,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:07:19,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031398767] [2023-11-12 02:07:19,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:19,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:07:19,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:19,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:07:19,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:07:19,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 715 [2023-11-12 02:07:19,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 57 transitions, 129 flow. Second operand has 3 states, 3 states have (on average 319.6666666666667) internal successors, (959), 3 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:19,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:07:19,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 715 [2023-11-12 02:07:19,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:07:20,828 INFO L124 PetriNetUnfolderBase]: 5112/6981 cut-off events. [2023-11-12 02:07:20,829 INFO L125 PetriNetUnfolderBase]: For 291/291 co-relation queries the response was YES. [2023-11-12 02:07:20,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14178 conditions, 6981 events. 5112/6981 cut-off events. For 291/291 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 32373 event pairs, 3657 based on Foata normal form. 0/3204 useless extension candidates. Maximal degree in co-relation 13076. Up to 6885 conditions per place. [2023-11-12 02:07:20,892 INFO L140 encePairwiseOnDemand]: 710/715 looper letters, 50 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2023-11-12 02:07:20,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 54 transitions, 227 flow [2023-11-12 02:07:20,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:07:20,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:07:20,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1012 transitions. [2023-11-12 02:07:20,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4717948717948718 [2023-11-12 02:07:20,925 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1012 transitions. [2023-11-12 02:07:20,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1012 transitions. [2023-11-12 02:07:20,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:07:20,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1012 transitions. [2023-11-12 02:07:20,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 337.3333333333333) internal successors, (1012), 3 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:20,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 715.0) internal successors, (2860), 4 states have internal predecessors, (2860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:20,958 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 715.0) internal successors, (2860), 4 states have internal predecessors, (2860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:20,960 INFO L175 Difference]: Start difference. First operand has 56 places, 57 transitions, 129 flow. Second operand 3 states and 1012 transitions. [2023-11-12 02:07:20,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 54 transitions, 227 flow [2023-11-12 02:07:20,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 54 transitions, 218 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-12 02:07:20,979 INFO L231 Difference]: Finished difference. Result has 50 places, 54 transitions, 118 flow [2023-11-12 02:07:20,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=715, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=50, PETRI_TRANSITIONS=54} [2023-11-12 02:07:20,986 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -6 predicate places. [2023-11-12 02:07:20,986 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 54 transitions, 118 flow [2023-11-12 02:07:20,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 319.6666666666667) internal successors, (959), 3 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:20,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:07:20,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-12 02:07:20,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:07:20,989 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-12 02:07:20,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:20,989 INFO L85 PathProgramCache]: Analyzing trace with hash 42903, now seen corresponding path program 1 times [2023-11-12 02:07:20,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:20,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034507175] [2023-11-12 02:07:20,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:20,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:21,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:21,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:07:21,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:21,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034507175] [2023-11-12 02:07:21,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034507175] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:21,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:21,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:07:21,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371261285] [2023-11-12 02:07:21,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:21,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:07:21,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:21,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:07:21,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:07:21,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 715 [2023-11-12 02:07:21,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 54 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 319.6666666666667) internal successors, (959), 3 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:21,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:07:21,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 715 [2023-11-12 02:07:21,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:07:22,132 INFO L124 PetriNetUnfolderBase]: 5115/6987 cut-off events. [2023-11-12 02:07:22,133 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2023-11-12 02:07:22,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14103 conditions, 6987 events. 5115/6987 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 32397 event pairs, 3657 based on Foata normal form. 0/3209 useless extension candidates. Maximal degree in co-relation 14065. Up to 6895 conditions per place. [2023-11-12 02:07:22,197 INFO L140 encePairwiseOnDemand]: 705/715 looper letters, 51 selfloop transitions, 7 changer transitions 0/60 dead transitions. [2023-11-12 02:07:22,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 60 transitions, 248 flow [2023-11-12 02:07:22,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:07:22,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:07:22,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1018 transitions. [2023-11-12 02:07:22,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4745920745920746 [2023-11-12 02:07:22,202 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1018 transitions. [2023-11-12 02:07:22,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1018 transitions. [2023-11-12 02:07:22,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:07:22,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1018 transitions. [2023-11-12 02:07:22,208 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) [2023-11-12 02:07:22,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 715.0) internal successors, (2860), 4 states have internal predecessors, (2860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:22,219 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 715.0) internal successors, (2860), 4 states have internal predecessors, (2860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:22,220 INFO L175 Difference]: Start difference. First operand has 50 places, 54 transitions, 118 flow. Second operand 3 states and 1018 transitions. [2023-11-12 02:07:22,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 60 transitions, 248 flow [2023-11-12 02:07:22,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 60 transitions, 242 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:07:22,223 INFO L231 Difference]: Finished difference. Result has 52 places, 60 transitions, 172 flow [2023-11-12 02:07:22,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=715, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=172, PETRI_PLACES=52, PETRI_TRANSITIONS=60} [2023-11-12 02:07:22,224 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -4 predicate places. [2023-11-12 02:07:22,225 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 60 transitions, 172 flow [2023-11-12 02:07:22,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 319.6666666666667) internal successors, (959), 3 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:22,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:07:22,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:07:22,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:07:22,227 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-12 02:07:22,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:22,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1331232, now seen corresponding path program 1 times [2023-11-12 02:07:22,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:22,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372066969] [2023-11-12 02:07:22,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:22,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:22,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:22,311 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:07:22,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:22,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372066969] [2023-11-12 02:07:22,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372066969] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:07:22,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808712520] [2023-11-12 02:07:22,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:22,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:22,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e413ee5c-96db-4f1f-943a-6b5421f31779/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:07:22,321 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e413ee5c-96db-4f1f-943a-6b5421f31779/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:07:22,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e413ee5c-96db-4f1f-943a-6b5421f31779/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:07:22,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:22,436 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:07:22,440 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:22,471 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:07:22,472 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:07:22,489 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:07:22,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808712520] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:07:22,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:07:22,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2023-11-12 02:07:22,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918872453] [2023-11-12 02:07:22,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:07:22,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:07:22,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:22,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:07:22,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:07:22,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 715 [2023-11-12 02:07:22,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 60 transitions, 172 flow. Second operand has 6 states, 6 states have (on average 320.0) internal successors, (1920), 6 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:22,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:07:22,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 715 [2023-11-12 02:07:22,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:07:23,634 INFO L124 PetriNetUnfolderBase]: 5124/7005 cut-off events. [2023-11-12 02:07:23,635 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2023-11-12 02:07:23,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14184 conditions, 7005 events. 5124/7005 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 32470 event pairs, 3657 based on Foata normal form. 0/3226 useless extension candidates. Maximal degree in co-relation 14065. Up to 6898 conditions per place. [2023-11-12 02:07:23,678 INFO L140 encePairwiseOnDemand]: 705/715 looper letters, 51 selfloop transitions, 25 changer transitions 0/78 dead transitions. [2023-11-12 02:07:23,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 78 transitions, 408 flow [2023-11-12 02:07:23,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:07:23,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:07:23,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1999 transitions. [2023-11-12 02:07:23,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.465967365967366 [2023-11-12 02:07:23,686 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1999 transitions. [2023-11-12 02:07:23,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1999 transitions. [2023-11-12 02:07:23,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:07:23,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1999 transitions. [2023-11-12 02:07:23,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 333.1666666666667) internal successors, (1999), 6 states have internal predecessors, (1999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:23,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 715.0) internal successors, (5005), 7 states have internal predecessors, (5005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:23,708 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 715.0) internal successors, (5005), 7 states have internal predecessors, (5005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:23,709 INFO L175 Difference]: Start difference. First operand has 52 places, 60 transitions, 172 flow. Second operand 6 states and 1999 transitions. [2023-11-12 02:07:23,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 78 transitions, 408 flow [2023-11-12 02:07:23,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 78 transitions, 382 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:07:23,715 INFO L231 Difference]: Finished difference. Result has 58 places, 78 transitions, 333 flow [2023-11-12 02:07:23,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=715, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=333, PETRI_PLACES=58, PETRI_TRANSITIONS=78} [2023-11-12 02:07:23,718 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2023-11-12 02:07:23,718 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 78 transitions, 333 flow [2023-11-12 02:07:23,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 320.0) internal successors, (1920), 6 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:23,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:07:23,721 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-12 02:07:23,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e413ee5c-96db-4f1f-943a-6b5421f31779/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:23,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e413ee5c-96db-4f1f-943a-6b5421f31779/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:23,929 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-12 02:07:23,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:23,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1005257175, now seen corresponding path program 2 times [2023-11-12 02:07:23,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:23,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052689498] [2023-11-12 02:07:23,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:23,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:23,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:24,081 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:07:24,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:24,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052689498] [2023-11-12 02:07:24,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052689498] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:07:24,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631054225] [2023-11-12 02:07:24,083 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 02:07:24,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:24,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e413ee5c-96db-4f1f-943a-6b5421f31779/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:07:24,086 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e413ee5c-96db-4f1f-943a-6b5421f31779/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:07:24,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e413ee5c-96db-4f1f-943a-6b5421f31779/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:07:24,246 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-12 02:07:24,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:07:24,248 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 02:07:24,249 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:24,273 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-12 02:07:24,274 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:07:24,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631054225] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:24,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:07:24,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-12 02:07:24,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558712371] [2023-11-12 02:07:24,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:24,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:07:24,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:24,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:07:24,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:07:24,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 715 [2023-11-12 02:07:24,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 78 transitions, 333 flow. Second operand has 3 states, 3 states have (on average 326.0) internal successors, (978), 3 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:24,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:07:24,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 715 [2023-11-12 02:07:24,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:07:25,152 INFO L124 PetriNetUnfolderBase]: 5124/7004 cut-off events. [2023-11-12 02:07:25,152 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2023-11-12 02:07:25,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14224 conditions, 7004 events. 5124/7004 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 32464 event pairs, 3657 based on Foata normal form. 1/3228 useless extension candidates. Maximal degree in co-relation 14136. Up to 6911 conditions per place. [2023-11-12 02:07:25,195 INFO L140 encePairwiseOnDemand]: 712/715 looper letters, 69 selfloop transitions, 6 changer transitions 0/77 dead transitions. [2023-11-12 02:07:25,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 77 transitions, 473 flow [2023-11-12 02:07:25,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:07:25,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:07:25,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1027 transitions. [2023-11-12 02:07:25,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47878787878787876 [2023-11-12 02:07:25,200 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1027 transitions. [2023-11-12 02:07:25,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1027 transitions. [2023-11-12 02:07:25,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:07:25,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1027 transitions. [2023-11-12 02:07:25,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 342.3333333333333) internal successors, (1027), 3 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:25,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 715.0) internal successors, (2860), 4 states have internal predecessors, (2860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:25,217 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 715.0) internal successors, (2860), 4 states have internal predecessors, (2860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:25,218 INFO L175 Difference]: Start difference. First operand has 58 places, 78 transitions, 333 flow. Second operand 3 states and 1027 transitions. [2023-11-12 02:07:25,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 77 transitions, 473 flow [2023-11-12 02:07:25,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 77 transitions, 436 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-11-12 02:07:25,223 INFO L231 Difference]: Finished difference. Result has 58 places, 77 transitions, 298 flow [2023-11-12 02:07:25,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=715, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=298, PETRI_PLACES=58, PETRI_TRANSITIONS=77} [2023-11-12 02:07:25,229 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2023-11-12 02:07:25,230 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 77 transitions, 298 flow [2023-11-12 02:07:25,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 326.0) internal successors, (978), 3 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:25,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:07:25,232 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-11-12 02:07:25,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e413ee5c-96db-4f1f-943a-6b5421f31779/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:25,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e413ee5c-96db-4f1f-943a-6b5421f31779/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:25,437 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-12 02:07:25,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:25,438 INFO L85 PathProgramCache]: Analyzing trace with hash 2063959274, now seen corresponding path program 1 times [2023-11-12 02:07:25,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:25,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8112705] [2023-11-12 02:07:25,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:25,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:25,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:25,682 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:07:25,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:25,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8112705] [2023-11-12 02:07:25,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8112705] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:07:25,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757275481] [2023-11-12 02:07:25,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:25,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:25,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e413ee5c-96db-4f1f-943a-6b5421f31779/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:07:25,697 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e413ee5c-96db-4f1f-943a-6b5421f31779/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:07:25,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e413ee5c-96db-4f1f-943a-6b5421f31779/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 02:07:25,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:25,822 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-12 02:07:25,824 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:25,846 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:07:25,846 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:07:25,920 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:07:25,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757275481] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:07:25,925 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:07:25,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-12 02:07:25,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334994266] [2023-11-12 02:07:25,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:07:25,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-12 02:07:25,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:25,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-12 02:07:25,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-12 02:07:26,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 715 [2023-11-12 02:07:26,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 77 transitions, 298 flow. Second operand has 13 states, 13 states have (on average 320.15384615384613) internal successors, (4162), 13 states have internal predecessors, (4162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:26,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:07:26,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 715 [2023-11-12 02:07:26,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:07:27,390 INFO L124 PetriNetUnfolderBase]: 5142/7040 cut-off events. [2023-11-12 02:07:27,391 INFO L125 PetriNetUnfolderBase]: For 100/100 co-relation queries the response was YES. [2023-11-12 02:07:27,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14348 conditions, 7040 events. 5142/7040 cut-off events. For 100/100 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 32699 event pairs, 3657 based on Foata normal form. 12/3266 useless extension candidates. Maximal degree in co-relation 14245. Up to 6903 conditions per place. [2023-11-12 02:07:27,433 INFO L140 encePairwiseOnDemand]: 706/715 looper letters, 50 selfloop transitions, 61 changer transitions 0/113 dead transitions. [2023-11-12 02:07:27,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 113 transitions, 736 flow [2023-11-12 02:07:27,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-12 02:07:27,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-12 02:07:27,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3951 transitions. [2023-11-12 02:07:27,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4604895104895105 [2023-11-12 02:07:27,449 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3951 transitions. [2023-11-12 02:07:27,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3951 transitions. [2023-11-12 02:07:27,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:07:27,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3951 transitions. [2023-11-12 02:07:27,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 329.25) internal successors, (3951), 12 states have internal predecessors, (3951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:27,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 715.0) internal successors, (9295), 13 states have internal predecessors, (9295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:27,490 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 715.0) internal successors, (9295), 13 states have internal predecessors, (9295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:27,490 INFO L175 Difference]: Start difference. First operand has 58 places, 77 transitions, 298 flow. Second operand 12 states and 3951 transitions. [2023-11-12 02:07:27,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 113 transitions, 736 flow [2023-11-12 02:07:27,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 113 transitions, 712 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:07:27,497 INFO L231 Difference]: Finished difference. Result has 73 places, 113 transitions, 698 flow [2023-11-12 02:07:27,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=715, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=698, PETRI_PLACES=73, PETRI_TRANSITIONS=113} [2023-11-12 02:07:27,500 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 17 predicate places. [2023-11-12 02:07:27,501 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 113 transitions, 698 flow [2023-11-12 02:07:27,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 320.15384615384613) internal successors, (4162), 13 states have internal predecessors, (4162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:27,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:07:27,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:27,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e413ee5c-96db-4f1f-943a-6b5421f31779/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:27,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e413ee5c-96db-4f1f-943a-6b5421f31779/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:27,710 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-12 02:07:27,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:27,710 INFO L85 PathProgramCache]: Analyzing trace with hash 107544841, now seen corresponding path program 1 times [2023-11-12 02:07:27,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:27,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874913542] [2023-11-12 02:07:27,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:27,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:27,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:27,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:07:27,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:27,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874913542] [2023-11-12 02:07:27,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874913542] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:27,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:27,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:07:27,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563729249] [2023-11-12 02:07:27,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:27,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:07:27,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:27,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:07:27,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:07:28,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 715 [2023-11-12 02:07:28,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 113 transitions, 698 flow. Second operand has 4 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:28,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:07:28,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 715 [2023-11-12 02:07:28,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:07:29,542 INFO L124 PetriNetUnfolderBase]: 9547/12993 cut-off events. [2023-11-12 02:07:29,542 INFO L125 PetriNetUnfolderBase]: For 230/230 co-relation queries the response was YES. [2023-11-12 02:07:29,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26631 conditions, 12993 events. 9547/12993 cut-off events. For 230/230 co-relation queries the response was YES. Maximal size of possible extension queue 655. Compared 64533 event pairs, 6602 based on Foata normal form. 0/6162 useless extension candidates. Maximal degree in co-relation 26435. Up to 6486 conditions per place. [2023-11-12 02:07:29,621 INFO L140 encePairwiseOnDemand]: 707/715 looper letters, 193 selfloop transitions, 7 changer transitions 0/202 dead transitions. [2023-11-12 02:07:29,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 202 transitions, 1616 flow [2023-11-12 02:07:29,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:07:29,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:07:29,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1655 transitions. [2023-11-12 02:07:29,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46293706293706294 [2023-11-12 02:07:29,628 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1655 transitions. [2023-11-12 02:07:29,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1655 transitions. [2023-11-12 02:07:29,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:07:29,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1655 transitions. [2023-11-12 02:07:29,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 331.0) internal successors, (1655), 5 states have internal predecessors, (1655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:29,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 715.0) internal successors, (4290), 6 states have internal predecessors, (4290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:29,644 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 715.0) internal successors, (4290), 6 states have internal predecessors, (4290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:29,644 INFO L175 Difference]: Start difference. First operand has 73 places, 113 transitions, 698 flow. Second operand 5 states and 1655 transitions. [2023-11-12 02:07:29,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 202 transitions, 1616 flow [2023-11-12 02:07:29,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 202 transitions, 1312 flow, removed 91 selfloop flow, removed 5 redundant places. [2023-11-12 02:07:29,653 INFO L231 Difference]: Finished difference. Result has 75 places, 117 transitions, 574 flow [2023-11-12 02:07:29,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=715, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=574, PETRI_PLACES=75, PETRI_TRANSITIONS=117} [2023-11-12 02:07:29,655 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 19 predicate places. [2023-11-12 02:07:29,655 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 117 transitions, 574 flow [2023-11-12 02:07:29,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:29,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:07:29,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:29,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:07:29,656 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-12 02:07:29,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:29,657 INFO L85 PathProgramCache]: Analyzing trace with hash 107544774, now seen corresponding path program 1 times [2023-11-12 02:07:29,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:29,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788019673] [2023-11-12 02:07:29,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:29,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:29,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:29,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:07:29,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:29,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788019673] [2023-11-12 02:07:29,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788019673] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:29,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:29,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:07:29,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353639566] [2023-11-12 02:07:29,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:29,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:07:29,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:29,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:07:29,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:07:30,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 715 [2023-11-12 02:07:30,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 117 transitions, 574 flow. Second operand has 5 states, 5 states have (on average 311.6) internal successors, (1558), 5 states have internal predecessors, (1558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:30,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:07:30,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 715 [2023-11-12 02:07:30,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:07:32,819 INFO L124 PetriNetUnfolderBase]: 18170/24685 cut-off events. [2023-11-12 02:07:32,819 INFO L125 PetriNetUnfolderBase]: For 2038/2038 co-relation queries the response was YES. [2023-11-12 02:07:32,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50990 conditions, 24685 events. 18170/24685 cut-off events. For 2038/2038 co-relation queries the response was YES. Maximal size of possible extension queue 1167. Compared 133220 event pairs, 12492 based on Foata normal form. 324/12800 useless extension candidates. Maximal degree in co-relation 50765. Up to 12212 conditions per place. [2023-11-12 02:07:32,946 INFO L140 encePairwiseOnDemand]: 707/715 looper letters, 159 selfloop transitions, 20 changer transitions 0/181 dead transitions. [2023-11-12 02:07:32,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 181 transitions, 1169 flow [2023-11-12 02:07:32,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:07:32,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:07:32,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1960 transitions. [2023-11-12 02:07:32,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4568764568764569 [2023-11-12 02:07:32,955 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1960 transitions. [2023-11-12 02:07:32,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1960 transitions. [2023-11-12 02:07:32,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:07:32,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1960 transitions. [2023-11-12 02:07:32,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 326.6666666666667) internal successors, (1960), 6 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:32,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 715.0) internal successors, (5005), 7 states have internal predecessors, (5005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:32,973 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 715.0) internal successors, (5005), 7 states have internal predecessors, (5005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:32,973 INFO L175 Difference]: Start difference. First operand has 75 places, 117 transitions, 574 flow. Second operand 6 states and 1960 transitions. [2023-11-12 02:07:32,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 181 transitions, 1169 flow [2023-11-12 02:07:32,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 181 transitions, 1165 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-11-12 02:07:32,982 INFO L231 Difference]: Finished difference. Result has 83 places, 120 transitions, 664 flow [2023-11-12 02:07:32,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=715, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=664, PETRI_PLACES=83, PETRI_TRANSITIONS=120} [2023-11-12 02:07:32,983 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 27 predicate places. [2023-11-12 02:07:32,984 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 120 transitions, 664 flow [2023-11-12 02:07:32,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 311.6) internal successors, (1558), 5 states have internal predecessors, (1558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:32,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:07:32,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:32,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:07:32,986 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-12 02:07:32,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:32,986 INFO L85 PathProgramCache]: Analyzing trace with hash 107544572, now seen corresponding path program 1 times [2023-11-12 02:07:32,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:32,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519434781] [2023-11-12 02:07:32,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:32,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:33,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:33,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:07:33,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:33,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519434781] [2023-11-12 02:07:33,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519434781] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:33,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:33,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:07:33,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112275433] [2023-11-12 02:07:33,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:33,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:07:33,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:33,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:07:33,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:07:33,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 331 out of 715 [2023-11-12 02:07:33,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 120 transitions, 664 flow. Second operand has 3 states, 3 states have (on average 333.6666666666667) internal successors, (1001), 3 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:33,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:07:33,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 331 of 715 [2023-11-12 02:07:33,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:07:36,932 INFO L124 PetriNetUnfolderBase]: 24794/34101 cut-off events. [2023-11-12 02:07:36,932 INFO L125 PetriNetUnfolderBase]: For 3364/3364 co-relation queries the response was YES. [2023-11-12 02:07:37,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70077 conditions, 34101 events. 24794/34101 cut-off events. For 3364/3364 co-relation queries the response was YES. Maximal size of possible extension queue 1545. Compared 201898 event pairs, 12492 based on Foata normal form. 0/17691 useless extension candidates. Maximal degree in co-relation 69844. Up to 25678 conditions per place. [2023-11-12 02:07:37,141 INFO L140 encePairwiseOnDemand]: 709/715 looper letters, 144 selfloop transitions, 4 changer transitions 0/150 dead transitions. [2023-11-12 02:07:37,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 150 transitions, 1023 flow [2023-11-12 02:07:37,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:07:37,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:07:37,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1076 transitions. [2023-11-12 02:07:37,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5016317016317017 [2023-11-12 02:07:37,154 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1076 transitions. [2023-11-12 02:07:37,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1076 transitions. [2023-11-12 02:07:37,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:07:37,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1076 transitions. [2023-11-12 02:07:37,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 358.6666666666667) internal successors, (1076), 3 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:37,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 715.0) internal successors, (2860), 4 states have internal predecessors, (2860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:37,165 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 715.0) internal successors, (2860), 4 states have internal predecessors, (2860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:37,165 INFO L175 Difference]: Start difference. First operand has 83 places, 120 transitions, 664 flow. Second operand 3 states and 1076 transitions. [2023-11-12 02:07:37,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 150 transitions, 1023 flow [2023-11-12 02:07:37,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 150 transitions, 1012 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-11-12 02:07:37,177 INFO L231 Difference]: Finished difference. Result has 85 places, 123 transitions, 681 flow [2023-11-12 02:07:37,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=715, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=681, PETRI_PLACES=85, PETRI_TRANSITIONS=123} [2023-11-12 02:07:37,181 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 29 predicate places. [2023-11-12 02:07:37,181 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 123 transitions, 681 flow [2023-11-12 02:07:37,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 333.6666666666667) internal successors, (1001), 3 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:37,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:07:37,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:37,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:07:37,183 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-12 02:07:37,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:37,184 INFO L85 PathProgramCache]: Analyzing trace with hash -766222638, now seen corresponding path program 1 times [2023-11-12 02:07:37,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:37,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116065451] [2023-11-12 02:07:37,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:37,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:37,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:37,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:07:37,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:37,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116065451] [2023-11-12 02:07:37,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116065451] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:07:37,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176480346] [2023-11-12 02:07:37,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:37,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:37,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e413ee5c-96db-4f1f-943a-6b5421f31779/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:07:37,302 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e413ee5c-96db-4f1f-943a-6b5421f31779/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:07:37,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e413ee5c-96db-4f1f-943a-6b5421f31779/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 02:07:37,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:37,413 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 02:07:37,414 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:37,461 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:07:37,462 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:07:37,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [176480346] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:37,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:07:37,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-11-12 02:07:37,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342121673] [2023-11-12 02:07:37,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:37,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:07:37,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:37,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:07:37,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:07:37,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 715 [2023-11-12 02:07:37,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 123 transitions, 681 flow. Second operand has 4 states, 4 states have (on average 331.25) internal successors, (1325), 4 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:37,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:07:37,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 715 [2023-11-12 02:07:37,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:07:40,674 INFO L124 PetriNetUnfolderBase]: 21234/28599 cut-off events. [2023-11-12 02:07:40,674 INFO L125 PetriNetUnfolderBase]: For 7989/7989 co-relation queries the response was YES. [2023-11-12 02:07:40,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65745 conditions, 28599 events. 21234/28599 cut-off events. For 7989/7989 co-relation queries the response was YES. Maximal size of possible extension queue 1212. Compared 152535 event pairs, 14168 based on Foata normal form. 284/17709 useless extension candidates. Maximal degree in co-relation 65511. Up to 28227 conditions per place. [2023-11-12 02:07:40,837 INFO L140 encePairwiseOnDemand]: 711/715 looper letters, 106 selfloop transitions, 12 changer transitions 0/120 dead transitions. [2023-11-12 02:07:40,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 120 transitions, 901 flow [2023-11-12 02:07:40,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:07:40,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:07:40,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1367 transitions. [2023-11-12 02:07:40,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.477972027972028 [2023-11-12 02:07:40,843 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1367 transitions. [2023-11-12 02:07:40,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1367 transitions. [2023-11-12 02:07:40,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:07:40,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1367 transitions. [2023-11-12 02:07:40,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 341.75) internal successors, (1367), 4 states have internal predecessors, (1367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:40,855 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 715.0) internal successors, (3575), 5 states have internal predecessors, (3575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:40,856 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 715.0) internal successors, (3575), 5 states have internal predecessors, (3575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:40,856 INFO L175 Difference]: Start difference. First operand has 85 places, 123 transitions, 681 flow. Second operand 4 states and 1367 transitions. [2023-11-12 02:07:40,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 120 transitions, 901 flow [2023-11-12 02:07:40,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 120 transitions, 865 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-12 02:07:40,868 INFO L231 Difference]: Finished difference. Result has 82 places, 120 transitions, 653 flow [2023-11-12 02:07:40,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=715, PETRI_DIFFERENCE_MINUEND_FLOW=629, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=653, PETRI_PLACES=82, PETRI_TRANSITIONS=120} [2023-11-12 02:07:40,870 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 26 predicate places. [2023-11-12 02:07:40,870 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 120 transitions, 653 flow [2023-11-12 02:07:40,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 331.25) internal successors, (1325), 4 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:40,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:07:40,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:40,878 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e413ee5c-96db-4f1f-943a-6b5421f31779/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:41,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e413ee5c-96db-4f1f-943a-6b5421f31779/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:41,077 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-12 02:07:41,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:41,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1577650470, now seen corresponding path program 1 times [2023-11-12 02:07:41,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:41,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437658431] [2023-11-12 02:07:41,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:41,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:41,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:41,238 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:07:41,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:41,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437658431] [2023-11-12 02:07:41,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437658431] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:07:41,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831509904] [2023-11-12 02:07:41,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:41,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:41,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e413ee5c-96db-4f1f-943a-6b5421f31779/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:07:41,241 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e413ee5c-96db-4f1f-943a-6b5421f31779/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:07:41,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e413ee5c-96db-4f1f-943a-6b5421f31779/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-12 02:07:41,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:41,366 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 02:07:41,368 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:41,463 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:07:41,463 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:07:41,525 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:07:41,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831509904] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-12 02:07:41,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:07:41,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5, 2] total 9 [2023-11-12 02:07:41,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838822845] [2023-11-12 02:07:41,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:41,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:07:41,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:41,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:07:41,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:07:41,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 715 [2023-11-12 02:07:41,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 120 transitions, 653 flow. Second operand has 4 states, 4 states have (on average 305.5) internal successors, (1222), 4 states have internal predecessors, (1222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:41,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:07:41,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 715 [2023-11-12 02:07:41,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:07:44,817 INFO L124 PetriNetUnfolderBase]: 20702/27917 cut-off events. [2023-11-12 02:07:44,817 INFO L125 PetriNetUnfolderBase]: For 5162/5162 co-relation queries the response was YES. [2023-11-12 02:07:44,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61950 conditions, 27917 events. 20702/27917 cut-off events. For 5162/5162 co-relation queries the response was YES. Maximal size of possible extension queue 1170. Compared 148582 event pairs, 13860 based on Foata normal form. 284/17231 useless extension candidates. Maximal degree in co-relation 61718. Up to 27565 conditions per place. [2023-11-12 02:07:45,017 INFO L140 encePairwiseOnDemand]: 713/715 looper letters, 115 selfloop transitions, 1 changer transitions 0/118 dead transitions. [2023-11-12 02:07:45,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 118 transitions, 872 flow [2023-11-12 02:07:45,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:07:45,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:07:45,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 958 transitions. [2023-11-12 02:07:45,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4466200466200466 [2023-11-12 02:07:45,023 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 958 transitions. [2023-11-12 02:07:45,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 958 transitions. [2023-11-12 02:07:45,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:07:45,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 958 transitions. [2023-11-12 02:07:45,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 319.3333333333333) internal successors, (958), 3 states have internal predecessors, (958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:45,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 715.0) internal successors, (2860), 4 states have internal predecessors, (2860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:45,035 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 715.0) internal successors, (2860), 4 states have internal predecessors, (2860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:45,035 INFO L175 Difference]: Start difference. First operand has 82 places, 120 transitions, 653 flow. Second operand 3 states and 958 transitions. [2023-11-12 02:07:45,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 118 transitions, 872 flow [2023-11-12 02:07:45,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 118 transitions, 851 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-12 02:07:45,046 INFO L231 Difference]: Finished difference. Result has 78 places, 118 transitions, 621 flow [2023-11-12 02:07:45,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=715, PETRI_DIFFERENCE_MINUEND_FLOW=619, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=621, PETRI_PLACES=78, PETRI_TRANSITIONS=118} [2023-11-12 02:07:45,047 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 22 predicate places. [2023-11-12 02:07:45,048 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 118 transitions, 621 flow [2023-11-12 02:07:45,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 305.5) internal successors, (1222), 4 states have internal predecessors, (1222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:45,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:07:45,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:45,056 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e413ee5c-96db-4f1f-943a-6b5421f31779/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-12 02:07:45,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e413ee5c-96db-4f1f-943a-6b5421f31779/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-12 02:07:45,256 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-12 02:07:45,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:45,257 INFO L85 PathProgramCache]: Analyzing trace with hash 275093441, now seen corresponding path program 1 times [2023-11-12 02:07:45,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:45,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080961106] [2023-11-12 02:07:45,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:45,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:45,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:45,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:07:45,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:45,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080961106] [2023-11-12 02:07:45,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080961106] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:45,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:45,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:07:45,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301845116] [2023-11-12 02:07:45,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:45,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:07:45,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:45,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:07:45,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:07:45,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 331 out of 715 [2023-11-12 02:07:45,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 118 transitions, 621 flow. Second operand has 3 states, 3 states have (on average 334.3333333333333) internal successors, (1003), 3 states have internal predecessors, (1003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:45,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:07:45,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 331 of 715 [2023-11-12 02:07:45,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:07:49,593 INFO L124 PetriNetUnfolderBase]: 27766/38005 cut-off events. [2023-11-12 02:07:49,594 INFO L125 PetriNetUnfolderBase]: For 5546/5546 co-relation queries the response was YES. [2023-11-12 02:07:49,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82866 conditions, 38005 events. 27766/38005 cut-off events. For 5546/5546 co-relation queries the response was YES. Maximal size of possible extension queue 1420. Compared 219737 event pairs, 13860 based on Foata normal form. 0/24234 useless extension candidates. Maximal degree in co-relation 82844. Up to 28894 conditions per place. [2023-11-12 02:07:49,805 INFO L140 encePairwiseOnDemand]: 709/715 looper letters, 142 selfloop transitions, 4 changer transitions 0/148 dead transitions. [2023-11-12 02:07:49,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 148 transitions, 994 flow [2023-11-12 02:07:49,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:07:49,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:07:49,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1070 transitions. [2023-11-12 02:07:49,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4988344988344988 [2023-11-12 02:07:49,810 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1070 transitions. [2023-11-12 02:07:49,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1070 transitions. [2023-11-12 02:07:49,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:07:49,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1070 transitions. [2023-11-12 02:07:49,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 356.6666666666667) internal successors, (1070), 3 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:49,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 715.0) internal successors, (2860), 4 states have internal predecessors, (2860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:49,820 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 715.0) internal successors, (2860), 4 states have internal predecessors, (2860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:49,820 INFO L175 Difference]: Start difference. First operand has 78 places, 118 transitions, 621 flow. Second operand 3 states and 1070 transitions. [2023-11-12 02:07:49,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 148 transitions, 994 flow [2023-11-12 02:07:49,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 148 transitions, 993 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:07:49,830 INFO L231 Difference]: Finished difference. Result has 80 places, 121 transitions, 648 flow [2023-11-12 02:07:49,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=715, PETRI_DIFFERENCE_MINUEND_FLOW=620, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=648, PETRI_PLACES=80, PETRI_TRANSITIONS=121} [2023-11-12 02:07:49,831 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 24 predicate places. [2023-11-12 02:07:49,831 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 121 transitions, 648 flow [2023-11-12 02:07:49,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 334.3333333333333) internal successors, (1003), 3 states have internal predecessors, (1003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:49,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:07:49,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:07:49,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-12 02:07:49,833 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-11-12 02:07:49,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:49,833 INFO L85 PathProgramCache]: Analyzing trace with hash 275095924, now seen corresponding path program 1 times [2023-11-12 02:07:49,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:49,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526604743] [2023-11-12 02:07:49,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:49,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:49,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:49,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:07:49,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:49,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526604743] [2023-11-12 02:07:49,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526604743] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:49,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:49,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:07:49,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063858259] [2023-11-12 02:07:49,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:49,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:07:49,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:49,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:07:49,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:07:50,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 715 [2023-11-12 02:07:50,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 121 transitions, 648 flow. Second operand has 5 states, 5 states have (on average 312.0) internal successors, (1560), 5 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:50,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:07:50,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 715 [2023-11-12 02:07:50,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand