./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff 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_563ca655-df1c-4b40-ab87-e5adeaed2132/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563ca655-df1c-4b40-ab87-e5adeaed2132/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563ca655-df1c-4b40-ab87-e5adeaed2132/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563ca655-df1c-4b40-ab87-e5adeaed2132/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563ca655-df1c-4b40-ab87-e5adeaed2132/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563ca655-df1c-4b40-ab87-e5adeaed2132/bin/uautomizer-verify-uCwYo4JHxu --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 01186d000498d57447d1d7ea86dd893215c56febea2169abeb96f12030a58ea4 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:03:22,032 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:03:22,132 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563ca655-df1c-4b40-ab87-e5adeaed2132/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-19 08:03:22,140 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:03:22,141 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:03:22,168 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:03:22,169 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:03:22,170 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:03:22,171 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:03:22,171 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:03:22,172 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:03:22,173 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:03:22,174 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:03:22,175 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:03:22,175 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:03:22,176 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:03:22,177 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:03:22,177 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:03:22,178 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:03:22,178 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:03:22,179 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:03:22,180 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:03:22,181 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 08:03:22,181 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 08:03:22,182 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:03:22,182 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:03:22,183 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:03:22,184 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:03:22,184 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:03:22,185 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:03:22,185 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:03:22,186 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:03:22,187 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:03:22,187 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:03:22,188 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:03:22,189 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:03:22,189 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:03:22,190 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:03:22,191 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:03:22,191 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:03:22,192 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:03:22,193 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_563ca655-df1c-4b40-ab87-e5adeaed2132/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563ca655-df1c-4b40-ab87-e5adeaed2132/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 01186d000498d57447d1d7ea86dd893215c56febea2169abeb96f12030a58ea4 [2023-11-19 08:03:22,520 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:03:22,545 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:03:22,548 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:03:22,550 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:03:22,550 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:03:22,552 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563ca655-df1c-4b40-ab87-e5adeaed2132/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c [2023-11-19 08:03:25,816 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:03:26,041 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:03:26,042 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563ca655-df1c-4b40-ab87-e5adeaed2132/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c [2023-11-19 08:03:26,052 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563ca655-df1c-4b40-ab87-e5adeaed2132/bin/uautomizer-verify-uCwYo4JHxu/data/911effd17/6e337616525c4b4b9b259c4a7f68e43f/FLAG6cb5487ef [2023-11-19 08:03:26,071 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563ca655-df1c-4b40-ab87-e5adeaed2132/bin/uautomizer-verify-uCwYo4JHxu/data/911effd17/6e337616525c4b4b9b259c4a7f68e43f [2023-11-19 08:03:26,074 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:03:26,076 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:03:26,081 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:03:26,081 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:03:26,088 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:03:26,092 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:03:26" (1/1) ... [2023-11-19 08:03:26,093 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e160515 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:26, skipping insertion in model container [2023-11-19 08:03:26,093 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:03:26" (1/1) ... [2023-11-19 08:03:26,146 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:03:26,355 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:03:26,376 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:03:26,441 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:03:26,455 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:03:26,457 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:03:26,466 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:03:26,466 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:26 WrapperNode [2023-11-19 08:03:26,466 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:03:26,467 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:03:26,468 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:03:26,468 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:03:26,475 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:26" (1/1) ... [2023-11-19 08:03:26,489 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:26" (1/1) ... [2023-11-19 08:03:26,530 INFO L138 Inliner]: procedures = 25, calls = 64, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 367 [2023-11-19 08:03:26,531 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:03:26,532 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:03:26,532 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:03:26,532 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:03:26,542 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:26" (1/1) ... [2023-11-19 08:03:26,542 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:26" (1/1) ... [2023-11-19 08:03:26,548 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:26" (1/1) ... [2023-11-19 08:03:26,548 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:26" (1/1) ... [2023-11-19 08:03:26,561 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:26" (1/1) ... [2023-11-19 08:03:26,566 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:26" (1/1) ... [2023-11-19 08:03:26,569 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:26" (1/1) ... [2023-11-19 08:03:26,571 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:26" (1/1) ... [2023-11-19 08:03:26,576 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:03:26,577 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:03:26,578 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:03:26,578 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:03:26,579 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:26" (1/1) ... [2023-11-19 08:03:26,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:03:26,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563ca655-df1c-4b40-ab87-e5adeaed2132/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:03:26,619 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563ca655-df1c-4b40-ab87-e5adeaed2132/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:03:26,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563ca655-df1c-4b40-ab87-e5adeaed2132/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:03:26,665 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:03:26,665 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 08:03:26,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 08:03:26,665 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 08:03:26,665 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 08:03:26,666 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 08:03:26,666 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 08:03:26,666 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 08:03:26,666 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-19 08:03:26,666 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-19 08:03:26,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:03:26,667 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 08:03:26,667 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 08:03:26,667 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 08:03:26,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:03:26,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:03:26,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 08:03:26,669 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 08:03:26,800 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:03:26,802 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:03:27,453 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:03:27,727 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:03:27,727 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-19 08:03:27,732 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:03:27 BoogieIcfgContainer [2023-11-19 08:03:27,733 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:03:27,735 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:03:27,735 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:03:27,738 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:03:27,739 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:03:26" (1/3) ... [2023-11-19 08:03:27,740 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a7b8ac5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:03:27, skipping insertion in model container [2023-11-19 08:03:27,740 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:26" (2/3) ... [2023-11-19 08:03:27,740 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a7b8ac5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:03:27, skipping insertion in model container [2023-11-19 08:03:27,741 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:03:27" (3/3) ... [2023-11-19 08:03:27,742 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-ring-nondet.wvr.c [2023-11-19 08:03:27,752 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 08:03:27,763 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:03:27,763 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2023-11-19 08:03:27,764 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 08:03:27,902 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-19 08:03:27,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 321 places, 339 transitions, 699 flow [2023-11-19 08:03:28,109 INFO L124 PetriNetUnfolderBase]: 28/336 cut-off events. [2023-11-19 08:03:28,109 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 08:03:28,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 349 conditions, 336 events. 28/336 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 430 event pairs, 0 based on Foata normal form. 0/276 useless extension candidates. Maximal degree in co-relation 283. Up to 3 conditions per place. [2023-11-19 08:03:28,119 INFO L82 GeneralOperation]: Start removeDead. Operand has 321 places, 339 transitions, 699 flow [2023-11-19 08:03:28,134 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 295 places, 312 transitions, 639 flow [2023-11-19 08:03:28,141 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:03:28,152 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 295 places, 312 transitions, 639 flow [2023-11-19 08:03:28,155 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 295 places, 312 transitions, 639 flow [2023-11-19 08:03:28,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 295 places, 312 transitions, 639 flow [2023-11-19 08:03:28,266 INFO L124 PetriNetUnfolderBase]: 27/312 cut-off events. [2023-11-19 08:03:28,267 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 08:03:28,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 324 conditions, 312 events. 27/312 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 428 event pairs, 0 based on Foata normal form. 0/253 useless extension candidates. Maximal degree in co-relation 283. Up to 3 conditions per place. [2023-11-19 08:03:28,277 INFO L119 LiptonReduction]: Number of co-enabled transitions 7226 [2023-11-19 08:03:43,384 INFO L134 LiptonReduction]: Checked pairs total: 22504 [2023-11-19 08:03:43,384 INFO L136 LiptonReduction]: Total number of compositions: 339 [2023-11-19 08:03:43,406 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:03:43,413 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;@6e99cfb2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:03:43,413 INFO L358 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2023-11-19 08:03:43,416 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:03:43,416 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-19 08:03:43,417 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:03:43,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:03:43,418 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 08:03:43,418 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-11-19 08:03:43,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:43,424 INFO L85 PathProgramCache]: Analyzing trace with hash 49860, now seen corresponding path program 1 times [2023-11-19 08:03:43,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:43,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137950216] [2023-11-19 08:03:43,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:43,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:43,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:43,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:03:43,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:43,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137950216] [2023-11-19 08:03:43,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137950216] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:43,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:43,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:03:43,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842039244] [2023-11-19 08:03:43,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:43,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:03:43,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:43,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:03:43,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:03:43,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 678 [2023-11-19 08:03:43,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 69 transitions, 153 flow. Second operand has 3 states, 3 states have (on average 268.6666666666667) internal successors, (806), 3 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:43,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:03:43,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 678 [2023-11-19 08:03:43,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:03:45,799 INFO L124 PetriNetUnfolderBase]: 8459/11800 cut-off events. [2023-11-19 08:03:45,801 INFO L125 PetriNetUnfolderBase]: For 404/404 co-relation queries the response was YES. [2023-11-19 08:03:45,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24025 conditions, 11800 events. 8459/11800 cut-off events. For 404/404 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 61832 event pairs, 7157 based on Foata normal form. 0/4936 useless extension candidates. Maximal degree in co-relation 22588. Up to 11796 conditions per place. [2023-11-19 08:03:45,907 INFO L140 encePairwiseOnDemand]: 655/678 looper letters, 58 selfloop transitions, 7 changer transitions 0/65 dead transitions. [2023-11-19 08:03:45,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 65 transitions, 275 flow [2023-11-19 08:03:45,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:03:45,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:03:45,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 885 transitions. [2023-11-19 08:03:45,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4351032448377581 [2023-11-19 08:03:45,933 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 885 transitions. [2023-11-19 08:03:45,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 885 transitions. [2023-11-19 08:03:45,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:03:45,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 885 transitions. [2023-11-19 08:03:45,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 295.0) internal successors, (885), 3 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:45,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 678.0) internal successors, (2712), 4 states have internal predecessors, (2712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:45,958 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 678.0) internal successors, (2712), 4 states have internal predecessors, (2712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:45,960 INFO L175 Difference]: Start difference. First operand has 67 places, 69 transitions, 153 flow. Second operand 3 states and 885 transitions. [2023-11-19 08:03:45,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 65 transitions, 275 flow [2023-11-19 08:03:45,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 65 transitions, 266 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-19 08:03:45,984 INFO L231 Difference]: Finished difference. Result has 60 places, 65 transitions, 188 flow [2023-11-19 08:03:45,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=678, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=60, PETRI_TRANSITIONS=65} [2023-11-19 08:03:45,991 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -7 predicate places. [2023-11-19 08:03:45,991 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 65 transitions, 188 flow [2023-11-19 08:03:45,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 268.6666666666667) internal successors, (806), 3 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:45,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:03:45,992 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 08:03:45,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 08:03:45,993 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-11-19 08:03:45,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:45,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1547191, now seen corresponding path program 1 times [2023-11-19 08:03:45,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:45,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122721572] [2023-11-19 08:03:45,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:45,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:46,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:46,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:03:46,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:46,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122721572] [2023-11-19 08:03:46,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122721572] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:03:46,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800801725] [2023-11-19 08:03:46,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:46,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:03:46,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563ca655-df1c-4b40-ab87-e5adeaed2132/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:03:46,167 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563ca655-df1c-4b40-ab87-e5adeaed2132/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:03:46,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563ca655-df1c-4b40-ab87-e5adeaed2132/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 08:03:46,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:46,281 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 08:03:46,286 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:03:46,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:03:46,328 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:03:46,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800801725] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:46,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:03:46,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-19 08:03:46,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696174287] [2023-11-19 08:03:46,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:46,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:03:46,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:46,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:03:46,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:03:46,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 678 [2023-11-19 08:03:46,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 65 transitions, 188 flow. Second operand has 4 states, 4 states have (on average 268.75) internal successors, (1075), 4 states have internal predecessors, (1075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:46,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:03:46,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 678 [2023-11-19 08:03:46,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:03:48,309 INFO L124 PetriNetUnfolderBase]: 8459/11797 cut-off events. [2023-11-19 08:03:48,310 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-11-19 08:03:48,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23916 conditions, 11797 events. 8459/11797 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 61764 event pairs, 7157 based on Foata normal form. 0/4940 useless extension candidates. Maximal degree in co-relation 23857. Up to 11784 conditions per place. [2023-11-19 08:03:48,396 INFO L140 encePairwiseOnDemand]: 668/678 looper letters, 54 selfloop transitions, 8 changer transitions 0/62 dead transitions. [2023-11-19 08:03:48,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 62 transitions, 300 flow [2023-11-19 08:03:48,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:03:48,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 08:03:48,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1137 transitions. [2023-11-19 08:03:48,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4192477876106195 [2023-11-19 08:03:48,410 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1137 transitions. [2023-11-19 08:03:48,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1137 transitions. [2023-11-19 08:03:48,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:03:48,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1137 transitions. [2023-11-19 08:03:48,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 284.25) internal successors, (1137), 4 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:48,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 678.0) internal successors, (3390), 5 states have internal predecessors, (3390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:48,426 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 678.0) internal successors, (3390), 5 states have internal predecessors, (3390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:48,427 INFO L175 Difference]: Start difference. First operand has 60 places, 65 transitions, 188 flow. Second operand 4 states and 1137 transitions. [2023-11-19 08:03:48,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 62 transitions, 300 flow [2023-11-19 08:03:48,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 62 transitions, 286 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:03:48,431 INFO L231 Difference]: Finished difference. Result has 58 places, 62 transitions, 178 flow [2023-11-19 08:03:48,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=678, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=178, PETRI_PLACES=58, PETRI_TRANSITIONS=62} [2023-11-19 08:03:48,433 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -9 predicate places. [2023-11-19 08:03:48,433 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 62 transitions, 178 flow [2023-11-19 08:03:48,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 268.75) internal successors, (1075), 4 states have internal predecessors, (1075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:48,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:03:48,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 08:03:48,461 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563ca655-df1c-4b40-ab87-e5adeaed2132/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-19 08:03:48,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563ca655-df1c-4b40-ab87-e5adeaed2132/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:03:48,649 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-11-19 08:03:48,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:48,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1547193, now seen corresponding path program 1 times [2023-11-19 08:03:48,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:48,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353234519] [2023-11-19 08:03:48,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:48,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:48,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:48,817 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:03:48,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:48,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353234519] [2023-11-19 08:03:48,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353234519] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:03:48,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591814672] [2023-11-19 08:03:48,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:48,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:03:48,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563ca655-df1c-4b40-ab87-e5adeaed2132/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:03:48,823 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563ca655-df1c-4b40-ab87-e5adeaed2132/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:03:48,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563ca655-df1c-4b40-ab87-e5adeaed2132/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 08:03:48,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:48,975 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 08:03:48,977 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:03:48,986 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:03:48,987 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:03:49,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:03:49,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591814672] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:03:49,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:03:49,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-19 08:03:49,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542216611] [2023-11-19 08:03:49,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:03:49,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:03:49,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:49,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:03:49,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:03:49,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 678 [2023-11-19 08:03:49,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 62 transitions, 178 flow. Second operand has 7 states, 7 states have (on average 269.14285714285717) internal successors, (1884), 7 states have internal predecessors, (1884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:49,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:03:49,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 678 [2023-11-19 08:03:49,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:03:50,825 INFO L124 PetriNetUnfolderBase]: 8468/11815 cut-off events. [2023-11-19 08:03:50,825 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-11-19 08:03:50,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23980 conditions, 11815 events. 8468/11815 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 61852 event pairs, 7157 based on Foata normal form. 0/4959 useless extension candidates. Maximal degree in co-relation 23857. Up to 11796 conditions per place. [2023-11-19 08:03:50,913 INFO L140 encePairwiseOnDemand]: 668/678 looper letters, 55 selfloop transitions, 25 changer transitions 0/80 dead transitions. [2023-11-19 08:03:50,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 80 transitions, 428 flow [2023-11-19 08:03:50,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:03:50,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 08:03:50,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1697 transitions. [2023-11-19 08:03:50,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4171583087512291 [2023-11-19 08:03:50,923 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1697 transitions. [2023-11-19 08:03:50,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1697 transitions. [2023-11-19 08:03:50,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:03:50,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1697 transitions. [2023-11-19 08:03:50,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 282.8333333333333) internal successors, (1697), 6 states have internal predecessors, (1697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:50,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 678.0) internal successors, (4746), 7 states have internal predecessors, (4746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:50,948 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 678.0) internal successors, (4746), 7 states have internal predecessors, (4746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:50,949 INFO L175 Difference]: Start difference. First operand has 58 places, 62 transitions, 178 flow. Second operand 6 states and 1697 transitions. [2023-11-19 08:03:50,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 80 transitions, 428 flow [2023-11-19 08:03:50,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 80 transitions, 409 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:03:50,953 INFO L231 Difference]: Finished difference. Result has 64 places, 80 transitions, 352 flow [2023-11-19 08:03:50,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=678, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=352, PETRI_PLACES=64, PETRI_TRANSITIONS=80} [2023-11-19 08:03:50,954 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -3 predicate places. [2023-11-19 08:03:50,955 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 80 transitions, 352 flow [2023-11-19 08:03:50,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 269.14285714285717) internal successors, (1884), 7 states have internal predecessors, (1884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:50,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:03:50,957 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-19 08:03:50,978 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563ca655-df1c-4b40-ab87-e5adeaed2132/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 08:03:51,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563ca655-df1c-4b40-ab87-e5adeaed2132/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:03:51,174 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-11-19 08:03:51,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:51,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1150752890, now seen corresponding path program 2 times [2023-11-19 08:03:51,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:51,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901435104] [2023-11-19 08:03:51,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:51,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:51,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:51,374 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:03:51,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:51,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901435104] [2023-11-19 08:03:51,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901435104] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:03:51,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332706401] [2023-11-19 08:03:51,376 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 08:03:51,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:03:51,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563ca655-df1c-4b40-ab87-e5adeaed2132/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:03:51,378 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563ca655-df1c-4b40-ab87-e5adeaed2132/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:03:51,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563ca655-df1c-4b40-ab87-e5adeaed2132/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 08:03:51,492 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-19 08:03:51,492 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 08:03:51,494 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 08:03:51,495 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:03:51,515 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-19 08:03:51,515 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:03:51,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332706401] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:51,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:03:51,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-19 08:03:51,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596738741] [2023-11-19 08:03:51,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:51,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:03:51,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:51,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:03:51,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-19 08:03:51,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 678 [2023-11-19 08:03:51,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 80 transitions, 352 flow. Second operand has 3 states, 3 states have (on average 275.0) internal successors, (825), 3 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:51,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:03:51,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 678 [2023-11-19 08:03:51,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:03:53,195 INFO L124 PetriNetUnfolderBase]: 8468/11814 cut-off events. [2023-11-19 08:03:53,195 INFO L125 PetriNetUnfolderBase]: For 85/85 co-relation queries the response was YES. [2023-11-19 08:03:53,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24019 conditions, 11814 events. 8468/11814 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 61836 event pairs, 7157 based on Foata normal form. 1/4963 useless extension candidates. Maximal degree in co-relation 23931. Up to 11809 conditions per place. [2023-11-19 08:03:53,285 INFO L140 encePairwiseOnDemand]: 675/678 looper letters, 73 selfloop transitions, 6 changer transitions 0/79 dead transitions. [2023-11-19 08:03:53,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 79 transitions, 500 flow [2023-11-19 08:03:53,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:03:53,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:03:53,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 878 transitions. [2023-11-19 08:03:53,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43166175024582104 [2023-11-19 08:03:53,289 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 878 transitions. [2023-11-19 08:03:53,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 878 transitions. [2023-11-19 08:03:53,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:03:53,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 878 transitions. [2023-11-19 08:03:53,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 292.6666666666667) internal successors, (878), 3 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:53,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 678.0) internal successors, (2712), 4 states have internal predecessors, (2712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:53,301 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 678.0) internal successors, (2712), 4 states have internal predecessors, (2712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:53,302 INFO L175 Difference]: Start difference. First operand has 64 places, 80 transitions, 352 flow. Second operand 3 states and 878 transitions. [2023-11-19 08:03:53,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 79 transitions, 500 flow [2023-11-19 08:03:53,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 79 transitions, 463 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-11-19 08:03:53,306 INFO L231 Difference]: Finished difference. Result has 64 places, 79 transitions, 317 flow [2023-11-19 08:03:53,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=678, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=317, PETRI_PLACES=64, PETRI_TRANSITIONS=79} [2023-11-19 08:03:53,307 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -3 predicate places. [2023-11-19 08:03:53,308 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 79 transitions, 317 flow [2023-11-19 08:03:53,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 275.0) internal successors, (825), 3 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:53,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:03:53,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:03:53,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563ca655-df1c-4b40-ab87-e5adeaed2132/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 08:03:53,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563ca655-df1c-4b40-ab87-e5adeaed2132/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:03:53,524 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-11-19 08:03:53,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:53,525 INFO L85 PathProgramCache]: Analyzing trace with hash -607534032, now seen corresponding path program 1 times [2023-11-19 08:03:53,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:53,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059387372] [2023-11-19 08:03:53,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:53,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:53,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:53,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:03:53,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:53,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059387372] [2023-11-19 08:03:53,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059387372] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:53,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:53,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:03:53,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835441797] [2023-11-19 08:03:53,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:53,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:03:53,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:53,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:03:53,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:03:53,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 678 [2023-11-19 08:03:53,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 79 transitions, 317 flow. Second operand has 4 states, 4 states have (on average 264.75) internal successors, (1059), 4 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:53,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:03:53,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 678 [2023-11-19 08:03:53,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:03:55,314 INFO L124 PetriNetUnfolderBase]: 8608/12059 cut-off events. [2023-11-19 08:03:55,314 INFO L125 PetriNetUnfolderBase]: For 109/109 co-relation queries the response was YES. [2023-11-19 08:03:55,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24554 conditions, 12059 events. 8608/12059 cut-off events. For 109/109 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 63475 event pairs, 7280 based on Foata normal form. 90/5241 useless extension candidates. Maximal degree in co-relation 24423. Up to 11813 conditions per place. [2023-11-19 08:03:55,385 INFO L140 encePairwiseOnDemand]: 666/678 looper letters, 108 selfloop transitions, 10 changer transitions 1/119 dead transitions. [2023-11-19 08:03:55,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 119 transitions, 736 flow [2023-11-19 08:03:55,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:03:55,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 08:03:55,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1405 transitions. [2023-11-19 08:03:55,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4144542772861357 [2023-11-19 08:03:55,392 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1405 transitions. [2023-11-19 08:03:55,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1405 transitions. [2023-11-19 08:03:55,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:03:55,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1405 transitions. [2023-11-19 08:03:55,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 281.0) internal successors, (1405), 5 states have internal predecessors, (1405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:55,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 678.0) internal successors, (4068), 6 states have internal predecessors, (4068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:55,406 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 678.0) internal successors, (4068), 6 states have internal predecessors, (4068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:55,407 INFO L175 Difference]: Start difference. First operand has 64 places, 79 transitions, 317 flow. Second operand 5 states and 1405 transitions. [2023-11-19 08:03:55,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 119 transitions, 736 flow [2023-11-19 08:03:55,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 119 transitions, 724 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:03:55,411 INFO L231 Difference]: Finished difference. Result has 68 places, 86 transitions, 410 flow [2023-11-19 08:03:55,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=678, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=410, PETRI_PLACES=68, PETRI_TRANSITIONS=86} [2023-11-19 08:03:55,413 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 1 predicate places. [2023-11-19 08:03:55,413 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 86 transitions, 410 flow [2023-11-19 08:03:55,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 264.75) internal successors, (1059), 4 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:55,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:03:55,414 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-11-19 08:03:55,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 08:03:55,414 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-11-19 08:03:55,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:55,415 INFO L85 PathProgramCache]: Analyzing trace with hash -636043177, now seen corresponding path program 1 times [2023-11-19 08:03:55,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:55,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407767976] [2023-11-19 08:03:55,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:55,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:55,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:55,529 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:03:55,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:55,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407767976] [2023-11-19 08:03:55,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407767976] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:03:55,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252162753] [2023-11-19 08:03:55,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:55,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:03:55,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563ca655-df1c-4b40-ab87-e5adeaed2132/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:03:55,532 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563ca655-df1c-4b40-ab87-e5adeaed2132/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:03:55,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563ca655-df1c-4b40-ab87-e5adeaed2132/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 08:03:55,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:55,651 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 08:03:55,652 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:03:55,669 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:03:55,669 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:03:55,726 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:03:55,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252162753] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:03:55,726 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:03:55,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-19 08:03:55,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476758965] [2023-11-19 08:03:55,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:03:55,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 08:03:55,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:55,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 08:03:55,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-19 08:03:55,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 678 [2023-11-19 08:03:55,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 86 transitions, 410 flow. Second operand has 13 states, 13 states have (on average 269.15384615384613) internal successors, (3499), 13 states have internal predecessors, (3499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:55,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:03:55,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 678 [2023-11-19 08:03:55,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:03:57,351 INFO L124 PetriNetUnfolderBase]: 8638/12119 cut-off events. [2023-11-19 08:03:57,352 INFO L125 PetriNetUnfolderBase]: For 776/776 co-relation queries the response was YES. [2023-11-19 08:03:57,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26136 conditions, 12119 events. 8638/12119 cut-off events. For 776/776 co-relation queries the response was YES. Maximal size of possible extension queue 726. Compared 63970 event pairs, 7280 based on Foata normal form. 24/5235 useless extension candidates. Maximal degree in co-relation 25759. Up to 12041 conditions per place. [2023-11-19 08:03:57,439 INFO L140 encePairwiseOnDemand]: 669/678 looper letters, 54 selfloop transitions, 74 changer transitions 0/128 dead transitions. [2023-11-19 08:03:57,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 128 transitions, 960 flow [2023-11-19 08:03:57,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 08:03:57,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-19 08:03:57,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3343 transitions. [2023-11-19 08:03:57,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.410889872173058 [2023-11-19 08:03:57,459 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3343 transitions. [2023-11-19 08:03:57,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3343 transitions. [2023-11-19 08:03:57,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:03:57,463 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3343 transitions. [2023-11-19 08:03:57,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 278.5833333333333) internal successors, (3343), 12 states have internal predecessors, (3343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:57,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 678.0) internal successors, (8814), 13 states have internal predecessors, (8814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:57,495 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 678.0) internal successors, (8814), 13 states have internal predecessors, (8814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:57,495 INFO L175 Difference]: Start difference. First operand has 68 places, 86 transitions, 410 flow. Second operand 12 states and 3343 transitions. [2023-11-19 08:03:57,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 128 transitions, 960 flow [2023-11-19 08:03:57,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 128 transitions, 954 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-19 08:03:57,509 INFO L231 Difference]: Finished difference. Result has 84 places, 128 transitions, 938 flow [2023-11-19 08:03:57,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=678, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=938, PETRI_PLACES=84, PETRI_TRANSITIONS=128} [2023-11-19 08:03:57,513 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 17 predicate places. [2023-11-19 08:03:57,514 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 128 transitions, 938 flow [2023-11-19 08:03:57,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 269.15384615384613) internal successors, (3499), 13 states have internal predecessors, (3499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:57,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:03:57,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:03:57,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563ca655-df1c-4b40-ab87-e5adeaed2132/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 08:03:57,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563ca655-df1c-4b40-ab87-e5adeaed2132/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-19 08:03:57,738 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-11-19 08:03:57,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:57,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1360819427, now seen corresponding path program 1 times [2023-11-19 08:03:57,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:57,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500190422] [2023-11-19 08:03:57,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:57,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:57,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:57,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:03:57,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:57,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500190422] [2023-11-19 08:03:57,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500190422] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:03:57,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825731690] [2023-11-19 08:03:57,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:57,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:03:57,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563ca655-df1c-4b40-ab87-e5adeaed2132/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:03:57,916 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563ca655-df1c-4b40-ab87-e5adeaed2132/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:03:57,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563ca655-df1c-4b40-ab87-e5adeaed2132/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 08:03:58,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:58,058 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 08:03:58,060 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:03:58,076 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 08:03:58,076 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:03:58,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825731690] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:58,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:03:58,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-11-19 08:03:58,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565546565] [2023-11-19 08:03:58,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:58,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:03:58,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:58,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:03:58,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:03:58,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 678 [2023-11-19 08:03:58,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 128 transitions, 938 flow. Second operand has 3 states, 3 states have (on average 283.6666666666667) internal successors, (851), 3 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:58,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:03:58,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 678 [2023-11-19 08:03:58,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:03:59,433 INFO L124 PetriNetUnfolderBase]: 7310/10263 cut-off events. [2023-11-19 08:03:59,433 INFO L125 PetriNetUnfolderBase]: For 772/772 co-relation queries the response was YES. [2023-11-19 08:03:59,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21956 conditions, 10263 events. 7310/10263 cut-off events. For 772/772 co-relation queries the response was YES. Maximal size of possible extension queue 641. Compared 52766 event pairs, 6088 based on Foata normal form. 0/4593 useless extension candidates. Maximal degree in co-relation 21752. Up to 10263 conditions per place. [2023-11-19 08:03:59,525 INFO L140 encePairwiseOnDemand]: 675/678 looper letters, 125 selfloop transitions, 1 changer transitions 0/126 dead transitions. [2023-11-19 08:03:59,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 126 transitions, 1182 flow [2023-11-19 08:03:59,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:03:59,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:03:59,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 898 transitions. [2023-11-19 08:03:59,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4414945919370698 [2023-11-19 08:03:59,531 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 898 transitions. [2023-11-19 08:03:59,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 898 transitions. [2023-11-19 08:03:59,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:03:59,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 898 transitions. [2023-11-19 08:03:59,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 299.3333333333333) internal successors, (898), 3 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:59,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 678.0) internal successors, (2712), 4 states have internal predecessors, (2712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:59,541 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 678.0) internal successors, (2712), 4 states have internal predecessors, (2712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:59,542 INFO L175 Difference]: Start difference. First operand has 84 places, 128 transitions, 938 flow. Second operand 3 states and 898 transitions. [2023-11-19 08:03:59,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 126 transitions, 1182 flow [2023-11-19 08:03:59,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 126 transitions, 978 flow, removed 52 selfloop flow, removed 5 redundant places. [2023-11-19 08:03:59,553 INFO L231 Difference]: Finished difference. Result has 79 places, 126 transitions, 728 flow [2023-11-19 08:03:59,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=678, PETRI_DIFFERENCE_MINUEND_FLOW=726, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=728, PETRI_PLACES=79, PETRI_TRANSITIONS=126} [2023-11-19 08:03:59,554 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 12 predicate places. [2023-11-19 08:03:59,554 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 126 transitions, 728 flow [2023-11-19 08:03:59,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 283.6666666666667) internal successors, (851), 3 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:59,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:03:59,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:03:59,580 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563ca655-df1c-4b40-ab87-e5adeaed2132/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-19 08:03:59,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563ca655-df1c-4b40-ab87-e5adeaed2132/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:03:59,777 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-11-19 08:03:59,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:59,777 INFO L85 PathProgramCache]: Analyzing trace with hash 764274703, now seen corresponding path program 1 times [2023-11-19 08:03:59,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:59,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660921592] [2023-11-19 08:03:59,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:59,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:59,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:59,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 08:03:59,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:59,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660921592] [2023-11-19 08:03:59,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660921592] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:59,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:59,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:03:59,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79569710] [2023-11-19 08:03:59,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:59,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:03:59,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:59,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:03:59,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:03:59,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 678 [2023-11-19 08:03:59,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 126 transitions, 728 flow. Second operand has 3 states, 3 states have (on average 284.0) internal successors, (852), 3 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:03:59,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:03:59,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 678 [2023-11-19 08:03:59,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:04:00,934 INFO L124 PetriNetUnfolderBase]: 7032/9853 cut-off events. [2023-11-19 08:04:00,934 INFO L125 PetriNetUnfolderBase]: For 752/752 co-relation queries the response was YES. [2023-11-19 08:04:00,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21089 conditions, 9853 events. 7032/9853 cut-off events. For 752/752 co-relation queries the response was YES. Maximal size of possible extension queue 576. Compared 51946 event pairs, 1618 based on Foata normal form. 0/4553 useless extension candidates. Maximal degree in co-relation 21068. Up to 9385 conditions per place. [2023-11-19 08:04:00,999 INFO L140 encePairwiseOnDemand]: 672/678 looper letters, 129 selfloop transitions, 16 changer transitions 0/145 dead transitions. [2023-11-19 08:04:00,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 145 transitions, 1065 flow [2023-11-19 08:04:00,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:04:00,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:04:01,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 916 transitions. [2023-11-19 08:04:01,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4503441494591937 [2023-11-19 08:04:01,003 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 916 transitions. [2023-11-19 08:04:01,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 916 transitions. [2023-11-19 08:04:01,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:04:01,004 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 916 transitions. [2023-11-19 08:04:01,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 305.3333333333333) internal successors, (916), 3 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:01,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 678.0) internal successors, (2712), 4 states have internal predecessors, (2712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:01,012 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 678.0) internal successors, (2712), 4 states have internal predecessors, (2712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:01,013 INFO L175 Difference]: Start difference. First operand has 79 places, 126 transitions, 728 flow. Second operand 3 states and 916 transitions. [2023-11-19 08:04:01,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 145 transitions, 1065 flow [2023-11-19 08:04:01,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 145 transitions, 1064 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 08:04:01,025 INFO L231 Difference]: Finished difference. Result has 80 places, 128 transitions, 791 flow [2023-11-19 08:04:01,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=678, PETRI_DIFFERENCE_MINUEND_FLOW=725, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=791, PETRI_PLACES=80, PETRI_TRANSITIONS=128} [2023-11-19 08:04:01,026 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 13 predicate places. [2023-11-19 08:04:01,028 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 128 transitions, 791 flow [2023-11-19 08:04:01,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 284.0) internal successors, (852), 3 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:01,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:04:01,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:01,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 08:04:01,029 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-11-19 08:04:01,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:01,030 INFO L85 PathProgramCache]: Analyzing trace with hash 764274704, now seen corresponding path program 1 times [2023-11-19 08:04:01,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:01,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358777295] [2023-11-19 08:04:01,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:01,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:01,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:01,151 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:04:01,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:01,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358777295] [2023-11-19 08:04:01,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358777295] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:04:01,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712426132] [2023-11-19 08:04:01,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:01,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:04:01,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563ca655-df1c-4b40-ab87-e5adeaed2132/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:01,157 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563ca655-df1c-4b40-ab87-e5adeaed2132/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:04:01,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563ca655-df1c-4b40-ab87-e5adeaed2132/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 08:04:01,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:01,297 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 08:04:01,299 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:04:01,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 08:04:01,327 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:04:01,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712426132] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:01,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:04:01,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 6 [2023-11-19 08:04:01,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117163755] [2023-11-19 08:04:01,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:01,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:04:01,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:01,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:04:01,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-19 08:04:01,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 678 [2023-11-19 08:04:01,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 128 transitions, 791 flow. Second operand has 4 states, 4 states have (on average 281.25) internal successors, (1125), 4 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:01,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:04:01,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 678 [2023-11-19 08:04:01,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:04:02,494 INFO L124 PetriNetUnfolderBase]: 7232/10053 cut-off events. [2023-11-19 08:04:02,494 INFO L125 PetriNetUnfolderBase]: For 2395/2395 co-relation queries the response was YES. [2023-11-19 08:04:02,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23269 conditions, 10053 events. 7232/10053 cut-off events. For 2395/2395 co-relation queries the response was YES. Maximal size of possible extension queue 597. Compared 50927 event pairs, 3080 based on Foata normal form. 0/4753 useless extension candidates. Maximal degree in co-relation 23246. Up to 5355 conditions per place. [2023-11-19 08:04:02,568 INFO L140 encePairwiseOnDemand]: 670/678 looper letters, 134 selfloop transitions, 19 changer transitions 0/153 dead transitions. [2023-11-19 08:04:02,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 153 transitions, 1162 flow [2023-11-19 08:04:02,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:04:02,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 08:04:02,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1194 transitions. [2023-11-19 08:04:02,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44026548672566373 [2023-11-19 08:04:02,575 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1194 transitions. [2023-11-19 08:04:02,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1194 transitions. [2023-11-19 08:04:02,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:04:02,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1194 transitions. [2023-11-19 08:04:02,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 298.5) internal successors, (1194), 4 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:02,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 678.0) internal successors, (3390), 5 states have internal predecessors, (3390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:02,586 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 678.0) internal successors, (3390), 5 states have internal predecessors, (3390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:02,587 INFO L175 Difference]: Start difference. First operand has 80 places, 128 transitions, 791 flow. Second operand 4 states and 1194 transitions. [2023-11-19 08:04:02,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 153 transitions, 1162 flow [2023-11-19 08:04:02,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 153 transitions, 1146 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 08:04:02,597 INFO L231 Difference]: Finished difference. Result has 83 places, 129 transitions, 864 flow [2023-11-19 08:04:02,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=678, PETRI_DIFFERENCE_MINUEND_FLOW=773, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=864, PETRI_PLACES=83, PETRI_TRANSITIONS=129} [2023-11-19 08:04:02,598 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 16 predicate places. [2023-11-19 08:04:02,598 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 129 transitions, 864 flow [2023-11-19 08:04:02,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 281.25) internal successors, (1125), 4 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:02,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:04:02,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:02,620 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563ca655-df1c-4b40-ab87-e5adeaed2132/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-19 08:04:02,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563ca655-df1c-4b40-ab87-e5adeaed2132/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:04:02,813 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-11-19 08:04:02,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:02,813 INFO L85 PathProgramCache]: Analyzing trace with hash -2077289650, now seen corresponding path program 1 times [2023-11-19 08:04:02,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:02,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962370134] [2023-11-19 08:04:02,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:02,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:02,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:02,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 08:04:02,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:02,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962370134] [2023-11-19 08:04:02,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962370134] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:02,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:02,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:04:02,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785907086] [2023-11-19 08:04:02,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:02,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:04:02,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:02,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:04:02,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:04:02,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 282 out of 678 [2023-11-19 08:04:02,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 129 transitions, 864 flow. Second operand has 3 states, 3 states have (on average 285.3333333333333) internal successors, (856), 3 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:02,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:04:02,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 282 of 678 [2023-11-19 08:04:02,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:04:04,616 INFO L124 PetriNetUnfolderBase]: 12524/17321 cut-off events. [2023-11-19 08:04:04,616 INFO L125 PetriNetUnfolderBase]: For 12093/12093 co-relation queries the response was YES. [2023-11-19 08:04:04,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43844 conditions, 17321 events. 12524/17321 cut-off events. For 12093/12093 co-relation queries the response was YES. Maximal size of possible extension queue 778. Compared 92533 event pairs, 6256 based on Foata normal form. 0/8899 useless extension candidates. Maximal degree in co-relation 43818. Up to 9696 conditions per place. [2023-11-19 08:04:04,746 INFO L140 encePairwiseOnDemand]: 674/678 looper letters, 168 selfloop transitions, 2 changer transitions 0/170 dead transitions. [2023-11-19 08:04:04,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 170 transitions, 1331 flow [2023-11-19 08:04:04,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:04:04,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:04:04,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 937 transitions. [2023-11-19 08:04:04,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4606686332350049 [2023-11-19 08:04:04,750 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 937 transitions. [2023-11-19 08:04:04,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 937 transitions. [2023-11-19 08:04:04,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:04:04,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 937 transitions. [2023-11-19 08:04:04,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 312.3333333333333) internal successors, (937), 3 states have internal predecessors, (937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:04,757 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 678.0) internal successors, (2712), 4 states have internal predecessors, (2712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:04,758 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 678.0) internal successors, (2712), 4 states have internal predecessors, (2712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:04,758 INFO L175 Difference]: Start difference. First operand has 83 places, 129 transitions, 864 flow. Second operand 3 states and 937 transitions. [2023-11-19 08:04:04,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 170 transitions, 1331 flow [2023-11-19 08:04:04,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 170 transitions, 1330 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 08:04:04,777 INFO L231 Difference]: Finished difference. Result has 85 places, 130 transitions, 881 flow [2023-11-19 08:04:04,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=678, PETRI_DIFFERENCE_MINUEND_FLOW=863, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=881, PETRI_PLACES=85, PETRI_TRANSITIONS=130} [2023-11-19 08:04:04,778 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 18 predicate places. [2023-11-19 08:04:04,778 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 130 transitions, 881 flow [2023-11-19 08:04:04,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 285.3333333333333) internal successors, (856), 3 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:04,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:04:04,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:04,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 08:04:04,779 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-11-19 08:04:04,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:04,780 INFO L85 PathProgramCache]: Analyzing trace with hash -2077291683, now seen corresponding path program 1 times [2023-11-19 08:04:04,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:04,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145538755] [2023-11-19 08:04:04,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:04,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:04,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:04,875 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 08:04:04,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:04,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145538755] [2023-11-19 08:04:04,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145538755] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:04,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:04,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:04:04,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761411793] [2023-11-19 08:04:04,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:04,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:04:04,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:04,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:04:04,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:04:04,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 678 [2023-11-19 08:04:04,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 130 transitions, 881 flow. Second operand has 4 states, 4 states have (on average 265.5) internal successors, (1062), 4 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:04,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:04:04,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 678 [2023-11-19 08:04:04,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:04:07,577 INFO L124 PetriNetUnfolderBase]: 16260/22663 cut-off events. [2023-11-19 08:04:07,577 INFO L125 PetriNetUnfolderBase]: For 23754/23754 co-relation queries the response was YES. [2023-11-19 08:04:07,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60414 conditions, 22663 events. 16260/22663 cut-off events. For 23754/23754 co-relation queries the response was YES. Maximal size of possible extension queue 947. Compared 126869 event pairs, 12738 based on Foata normal form. 506/12877 useless extension candidates. Maximal degree in co-relation 60387. Up to 17298 conditions per place. [2023-11-19 08:04:07,735 INFO L140 encePairwiseOnDemand]: 664/678 looper letters, 142 selfloop transitions, 25 changer transitions 0/167 dead transitions. [2023-11-19 08:04:07,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 167 transitions, 1371 flow [2023-11-19 08:04:07,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:04:07,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 08:04:07,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1147 transitions. [2023-11-19 08:04:07,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42293510324483774 [2023-11-19 08:04:07,739 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1147 transitions. [2023-11-19 08:04:07,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1147 transitions. [2023-11-19 08:04:07,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:04:07,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1147 transitions. [2023-11-19 08:04:07,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 286.75) internal successors, (1147), 4 states have internal predecessors, (1147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:07,748 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 678.0) internal successors, (3390), 5 states have internal predecessors, (3390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:07,749 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 678.0) internal successors, (3390), 5 states have internal predecessors, (3390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:07,749 INFO L175 Difference]: Start difference. First operand has 85 places, 130 transitions, 881 flow. Second operand 4 states and 1147 transitions. [2023-11-19 08:04:07,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 167 transitions, 1371 flow [2023-11-19 08:04:07,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 167 transitions, 1367 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 08:04:07,771 INFO L231 Difference]: Finished difference. Result has 88 places, 130 transitions, 953 flow [2023-11-19 08:04:07,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=678, PETRI_DIFFERENCE_MINUEND_FLOW=879, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=953, PETRI_PLACES=88, PETRI_TRANSITIONS=130} [2023-11-19 08:04:07,772 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 21 predicate places. [2023-11-19 08:04:07,772 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 130 transitions, 953 flow [2023-11-19 08:04:07,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 265.5) internal successors, (1062), 4 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:07,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:04:07,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:07,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 08:04:07,773 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-11-19 08:04:07,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:07,774 INFO L85 PathProgramCache]: Analyzing trace with hash 62376146, now seen corresponding path program 1 times [2023-11-19 08:04:07,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:07,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008271624] [2023-11-19 08:04:07,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:07,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:07,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:07,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:04:07,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:07,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008271624] [2023-11-19 08:04:07,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008271624] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:07,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:07,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:04:07,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105659216] [2023-11-19 08:04:07,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:07,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:04:07,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:07,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:04:07,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:04:07,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 678 [2023-11-19 08:04:07,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 130 transitions, 953 flow. Second operand has 3 states, 3 states have (on average 282.6666666666667) internal successors, (848), 3 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:07,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:04:07,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 678 [2023-11-19 08:04:07,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:04:10,441 INFO L124 PetriNetUnfolderBase]: 17996/24979 cut-off events. [2023-11-19 08:04:10,441 INFO L125 PetriNetUnfolderBase]: For 27202/27202 co-relation queries the response was YES. [2023-11-19 08:04:10,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71169 conditions, 24979 events. 17996/24979 cut-off events. For 27202/27202 co-relation queries the response was YES. Maximal size of possible extension queue 906. Compared 137349 event pairs, 4244 based on Foata normal form. 780/14575 useless extension candidates. Maximal degree in co-relation 71141. Up to 20333 conditions per place. [2023-11-19 08:04:10,630 INFO L140 encePairwiseOnDemand]: 668/678 looper letters, 154 selfloop transitions, 5 changer transitions 1/160 dead transitions. [2023-11-19 08:04:10,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 160 transitions, 1402 flow [2023-11-19 08:04:10,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:04:10,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:04:10,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 920 transitions. [2023-11-19 08:04:10,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523107177974435 [2023-11-19 08:04:10,634 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 920 transitions. [2023-11-19 08:04:10,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 920 transitions. [2023-11-19 08:04:10,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:04:10,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 920 transitions. [2023-11-19 08:04:10,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 306.6666666666667) internal successors, (920), 3 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:10,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 678.0) internal successors, (2712), 4 states have internal predecessors, (2712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:10,643 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 678.0) internal successors, (2712), 4 states have internal predecessors, (2712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:10,643 INFO L175 Difference]: Start difference. First operand has 88 places, 130 transitions, 953 flow. Second operand 3 states and 920 transitions. [2023-11-19 08:04:10,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 160 transitions, 1402 flow [2023-11-19 08:04:10,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 160 transitions, 1375 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-19 08:04:10,669 INFO L231 Difference]: Finished difference. Result has 90 places, 133 transitions, 949 flow [2023-11-19 08:04:10,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=678, PETRI_DIFFERENCE_MINUEND_FLOW=926, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=949, PETRI_PLACES=90, PETRI_TRANSITIONS=133} [2023-11-19 08:04:10,670 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 23 predicate places. [2023-11-19 08:04:10,670 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 133 transitions, 949 flow [2023-11-19 08:04:10,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 282.6666666666667) internal successors, (848), 3 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:10,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:04:10,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:10,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 08:04:10,671 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-11-19 08:04:10,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:10,672 INFO L85 PathProgramCache]: Analyzing trace with hash -31763829, now seen corresponding path program 1 times [2023-11-19 08:04:10,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:10,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909067470] [2023-11-19 08:04:10,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:10,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:10,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:10,870 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 08:04:10,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:10,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909067470] [2023-11-19 08:04:10,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909067470] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:04:10,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374713385] [2023-11-19 08:04:10,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:10,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:04:10,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563ca655-df1c-4b40-ab87-e5adeaed2132/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:10,877 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563ca655-df1c-4b40-ab87-e5adeaed2132/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:04:10,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563ca655-df1c-4b40-ab87-e5adeaed2132/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 08:04:11,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:11,023 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 08:04:11,024 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:04:11,050 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 08:04:11,051 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:04:11,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374713385] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:11,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:04:11,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2023-11-19 08:04:11,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074176000] [2023-11-19 08:04:11,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:11,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:04:11,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:11,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:04:11,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:04:11,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 678 [2023-11-19 08:04:11,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 133 transitions, 949 flow. Second operand has 3 states, 3 states have (on average 284.6666666666667) internal successors, (854), 3 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:11,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:04:11,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 678 [2023-11-19 08:04:11,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:04:13,379 INFO L124 PetriNetUnfolderBase]: 15997/22183 cut-off events. [2023-11-19 08:04:13,379 INFO L125 PetriNetUnfolderBase]: For 26703/26703 co-relation queries the response was YES. [2023-11-19 08:04:13,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69544 conditions, 22183 events. 15997/22183 cut-off events. For 26703/26703 co-relation queries the response was YES. Maximal size of possible extension queue 780. Compared 119104 event pairs, 10725 based on Foata normal form. 0/13509 useless extension candidates. Maximal degree in co-relation 69514. Up to 22183 conditions per place. [2023-11-19 08:04:13,572 INFO L140 encePairwiseOnDemand]: 675/678 looper letters, 130 selfloop transitions, 1 changer transitions 0/131 dead transitions. [2023-11-19 08:04:13,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 131 transitions, 1201 flow [2023-11-19 08:04:13,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:04:13,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:04:13,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 894 transitions. [2023-11-19 08:04:13,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43952802359882004 [2023-11-19 08:04:13,576 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 894 transitions. [2023-11-19 08:04:13,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 894 transitions. [2023-11-19 08:04:13,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:04:13,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 894 transitions. [2023-11-19 08:04:13,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 298.0) internal successors, (894), 3 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:13,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 678.0) internal successors, (2712), 4 states have internal predecessors, (2712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:13,585 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 678.0) internal successors, (2712), 4 states have internal predecessors, (2712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:13,585 INFO L175 Difference]: Start difference. First operand has 90 places, 133 transitions, 949 flow. Second operand 3 states and 894 transitions. [2023-11-19 08:04:13,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 131 transitions, 1201 flow [2023-11-19 08:04:13,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 131 transitions, 1196 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 08:04:13,636 INFO L231 Difference]: Finished difference. Result has 89 places, 131 transitions, 936 flow [2023-11-19 08:04:13,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=678, PETRI_DIFFERENCE_MINUEND_FLOW=934, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=936, PETRI_PLACES=89, PETRI_TRANSITIONS=131} [2023-11-19 08:04:13,637 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 22 predicate places. [2023-11-19 08:04:13,637 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 131 transitions, 936 flow [2023-11-19 08:04:13,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 284.6666666666667) internal successors, (854), 3 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:13,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:04:13,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:13,665 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563ca655-df1c-4b40-ab87-e5adeaed2132/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 08:04:13,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_563ca655-df1c-4b40-ab87-e5adeaed2132/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-19 08:04:13,853 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 58 more)] === [2023-11-19 08:04:13,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:13,853 INFO L85 PathProgramCache]: Analyzing trace with hash -31763830, now seen corresponding path program 1 times [2023-11-19 08:04:13,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:13,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919007166] [2023-11-19 08:04:13,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:13,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:13,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:14,074 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 08:04:14,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:14,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919007166] [2023-11-19 08:04:14,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919007166] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:14,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:14,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:04:14,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059141146] [2023-11-19 08:04:14,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:14,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:04:14,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:14,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:04:14,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:04:14,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 678 [2023-11-19 08:04:14,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 131 transitions, 936 flow. Second operand has 4 states, 4 states have (on average 278.75) internal successors, (1115), 4 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:14,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:04:14,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 678 [2023-11-19 08:04:14,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand