./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/test-easy11.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/test-easy11.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya --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 d4ad0d0809306a534b821bfb65370b6441b48266d0d86b4699760a422c08b963 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 06:30:57,905 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 06:30:57,969 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 06:30:57,974 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 06:30:57,974 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 06:30:57,997 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 06:30:57,997 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 06:30:57,998 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 06:30:57,999 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 06:30:57,999 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 06:30:58,000 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 06:30:58,000 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 06:30:58,001 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 06:30:58,002 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 06:30:58,002 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 06:30:58,003 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 06:30:58,003 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 06:30:58,004 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 06:30:58,004 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 06:30:58,005 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 06:30:58,005 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 06:30:58,006 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 06:30:58,006 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 06:30:58,006 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 06:30:58,007 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 06:30:58,007 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 06:30:58,008 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 06:30:58,008 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 06:30:58,008 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 06:30:58,009 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 06:30:58,009 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 06:30:58,009 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 06:30:58,010 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 06:30:58,010 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:30:58,010 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 06:30:58,011 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 06:30:58,011 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 06:30:58,011 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 06:30:58,011 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 06:30:58,011 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 06:30:58,012 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 06:30:58,012 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 06:30:58,012 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 06:30:58,012 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 06:30:58,012 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_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d4ad0d0809306a534b821bfb65370b6441b48266d0d86b4699760a422c08b963 [2023-11-29 06:30:58,222 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 06:30:58,245 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 06:30:58,248 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 06:30:58,249 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 06:30:58,250 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 06:30:58,251 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/test-easy11.wvr.c [2023-11-29 06:31:01,025 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 06:31:01,192 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 06:31:01,193 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/sv-benchmarks/c/weaver/test-easy11.wvr.c [2023-11-29 06:31:01,200 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/data/672d3ad5a/bc7734d06c6245609d0eee2c3ee3578d/FLAG5d492d401 [2023-11-29 06:31:01,214 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/data/672d3ad5a/bc7734d06c6245609d0eee2c3ee3578d [2023-11-29 06:31:01,217 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 06:31:01,218 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 06:31:01,220 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 06:31:01,220 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 06:31:01,225 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 06:31:01,226 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:31:01" (1/1) ... [2023-11-29 06:31:01,227 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@176baf27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:31:01, skipping insertion in model container [2023-11-29 06:31:01,227 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:31:01" (1/1) ... [2023-11-29 06:31:01,251 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 06:31:01,422 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:31:01,431 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 06:31:01,451 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:31:01,459 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 06:31:01,459 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 06:31:01,467 INFO L206 MainTranslator]: Completed translation [2023-11-29 06:31:01,467 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:31:01 WrapperNode [2023-11-29 06:31:01,467 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 06:31:01,468 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 06:31:01,468 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 06:31:01,469 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 06:31:01,476 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:31:01" (1/1) ... [2023-11-29 06:31:01,483 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:31:01" (1/1) ... [2023-11-29 06:31:01,504 INFO L138 Inliner]: procedures = 21, calls = 25, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 55 [2023-11-29 06:31:01,504 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 06:31:01,504 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 06:31:01,505 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 06:31:01,505 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 06:31:01,513 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:31:01" (1/1) ... [2023-11-29 06:31:01,513 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:31:01" (1/1) ... [2023-11-29 06:31:01,515 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:31:01" (1/1) ... [2023-11-29 06:31:01,527 INFO L175 MemorySlicer]: Split 6 memory accesses to 3 slices as follows [2, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2023-11-29 06:31:01,527 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:31:01" (1/1) ... [2023-11-29 06:31:01,527 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:31:01" (1/1) ... [2023-11-29 06:31:01,532 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:31:01" (1/1) ... [2023-11-29 06:31:01,535 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:31:01" (1/1) ... [2023-11-29 06:31:01,536 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:31:01" (1/1) ... [2023-11-29 06:31:01,537 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:31:01" (1/1) ... [2023-11-29 06:31:01,539 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 06:31:01,540 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 06:31:01,540 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 06:31:01,540 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 06:31:01,540 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:31:01" (1/1) ... [2023-11-29 06:31:01,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:31:01,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:31:01,568 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 06:31:01,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 06:31:01,603 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 06:31:01,604 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 06:31:01,604 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 06:31:01,604 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 06:31:01,604 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 06:31:01,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 06:31:01,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 06:31:01,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 06:31:01,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 06:31:01,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 06:31:01,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 06:31:01,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 06:31:01,606 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 06:31:01,606 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 06:31:01,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 06:31:01,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 06:31:01,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 06:31:01,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 06:31:01,607 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 06:31:01,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 06:31:01,608 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 06:31:01,719 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 06:31:01,722 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 06:31:01,895 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 06:31:02,021 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 06:31:02,022 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 06:31:02,022 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:31:02 BoogieIcfgContainer [2023-11-29 06:31:02,022 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 06:31:02,025 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 06:31:02,026 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 06:31:02,029 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 06:31:02,029 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:31:01" (1/3) ... [2023-11-29 06:31:02,030 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8b115d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:31:02, skipping insertion in model container [2023-11-29 06:31:02,030 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:31:01" (2/3) ... [2023-11-29 06:31:02,030 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8b115d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:31:02, skipping insertion in model container [2023-11-29 06:31:02,031 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:31:02" (3/3) ... [2023-11-29 06:31:02,032 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy11.wvr.c [2023-11-29 06:31:02,057 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 06:31:02,067 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 06:31:02,068 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-29 06:31:02,068 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 06:31:02,111 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-29 06:31:02,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 33 transitions, 80 flow [2023-11-29 06:31:02,166 INFO L124 PetriNetUnfolderBase]: 2/31 cut-off events. [2023-11-29 06:31:02,166 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 06:31:02,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 31 events. 2/31 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 69 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2023-11-29 06:31:02,170 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 33 transitions, 80 flow [2023-11-29 06:31:02,174 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 29 transitions, 67 flow [2023-11-29 06:31:02,184 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 06:31:02,192 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;@42b18573, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 06:31:02,192 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-11-29 06:31:02,198 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 06:31:02,198 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2023-11-29 06:31:02,198 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 06:31:02,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:31:02,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 06:31:02,199 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-29 06:31:02,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:31:02,204 INFO L85 PathProgramCache]: Analyzing trace with hash 253881907, now seen corresponding path program 1 times [2023-11-29 06:31:02,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:31:02,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904908577] [2023-11-29 06:31:02,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:31:02,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:31:02,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:31:02,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:31:02,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:31:02,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904908577] [2023-11-29 06:31:02,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904908577] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:31:02,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:31:02,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:31:02,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292792609] [2023-11-29 06:31:02,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:31:02,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:31:02,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:31:02,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:31:02,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:31:02,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2023-11-29 06:31:02,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 29 transitions, 67 flow. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:02,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:31:02,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2023-11-29 06:31:02,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:31:02,703 INFO L124 PetriNetUnfolderBase]: 251/454 cut-off events. [2023-11-29 06:31:02,703 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-29 06:31:02,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 916 conditions, 454 events. 251/454 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2129 event pairs, 7 based on Foata normal form. 18/338 useless extension candidates. Maximal degree in co-relation 834. Up to 314 conditions per place. [2023-11-29 06:31:02,711 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 42 selfloop transitions, 4 changer transitions 0/50 dead transitions. [2023-11-29 06:31:02,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 50 transitions, 207 flow [2023-11-29 06:31:02,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 06:31:02,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 06:31:02,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 77 transitions. [2023-11-29 06:31:02,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2023-11-29 06:31:02,725 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 77 transitions. [2023-11-29 06:31:02,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 77 transitions. [2023-11-29 06:31:02,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:31:02,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 77 transitions. [2023-11-29 06:31:02,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:02,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:02,735 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:02,737 INFO L175 Difference]: Start difference. First operand has 34 places, 29 transitions, 67 flow. Second operand 5 states and 77 transitions. [2023-11-29 06:31:02,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 50 transitions, 207 flow [2023-11-29 06:31:02,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 50 transitions, 200 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 06:31:02,743 INFO L231 Difference]: Finished difference. Result has 34 places, 28 transitions, 68 flow [2023-11-29 06:31:02,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=68, PETRI_PLACES=34, PETRI_TRANSITIONS=28} [2023-11-29 06:31:02,749 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 0 predicate places. [2023-11-29 06:31:02,749 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 28 transitions, 68 flow [2023-11-29 06:31:02,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:02,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:31:02,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 06:31:02,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 06:31:02,750 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-29 06:31:02,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:31:02,751 INFO L85 PathProgramCache]: Analyzing trace with hash 253881940, now seen corresponding path program 1 times [2023-11-29 06:31:02,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:31:02,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147445447] [2023-11-29 06:31:02,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:31:02,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:31:02,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:31:02,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:31:02,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:31:02,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147445447] [2023-11-29 06:31:02,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147445447] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:31:02,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:31:02,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:31:02,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048203309] [2023-11-29 06:31:02,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:31:02,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:31:02,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:31:02,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:31:02,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:31:02,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2023-11-29 06:31:02,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 28 transitions, 68 flow. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:02,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:31:02,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2023-11-29 06:31:02,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:31:02,971 INFO L124 PetriNetUnfolderBase]: 203/374 cut-off events. [2023-11-29 06:31:02,971 INFO L125 PetriNetUnfolderBase]: For 53/53 co-relation queries the response was YES. [2023-11-29 06:31:02,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 797 conditions, 374 events. 203/374 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1522 event pairs, 51 based on Foata normal form. 0/296 useless extension candidates. Maximal degree in co-relation 606. Up to 179 conditions per place. [2023-11-29 06:31:02,976 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 42 selfloop transitions, 5 changer transitions 2/54 dead transitions. [2023-11-29 06:31:02,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 54 transitions, 228 flow [2023-11-29 06:31:02,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:31:02,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 06:31:02,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 82 transitions. [2023-11-29 06:31:02,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6212121212121212 [2023-11-29 06:31:02,978 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 82 transitions. [2023-11-29 06:31:02,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 82 transitions. [2023-11-29 06:31:02,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:31:02,979 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 82 transitions. [2023-11-29 06:31:02,980 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:02,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:02,981 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:02,981 INFO L175 Difference]: Start difference. First operand has 34 places, 28 transitions, 68 flow. Second operand 4 states and 82 transitions. [2023-11-29 06:31:02,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 54 transitions, 228 flow [2023-11-29 06:31:02,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 54 transitions, 214 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 06:31:02,984 INFO L231 Difference]: Finished difference. Result has 35 places, 30 transitions, 84 flow [2023-11-29 06:31:02,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=84, PETRI_PLACES=35, PETRI_TRANSITIONS=30} [2023-11-29 06:31:02,985 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 1 predicate places. [2023-11-29 06:31:02,985 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 30 transitions, 84 flow [2023-11-29 06:31:02,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:02,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:31:02,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 06:31:02,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 06:31:02,986 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-29 06:31:02,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:31:02,987 INFO L85 PathProgramCache]: Analyzing trace with hash 253881941, now seen corresponding path program 1 times [2023-11-29 06:31:02,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:31:02,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532725890] [2023-11-29 06:31:02,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:31:02,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:31:03,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:31:03,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:31:03,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:31:03,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532725890] [2023-11-29 06:31:03,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532725890] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:31:03,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:31:03,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:31:03,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470393902] [2023-11-29 06:31:03,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:31:03,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:31:03,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:31:03,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:31:03,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:31:03,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2023-11-29 06:31:03,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 84 flow. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:03,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:31:03,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2023-11-29 06:31:03,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:31:03,201 INFO L124 PetriNetUnfolderBase]: 245/448 cut-off events. [2023-11-29 06:31:03,201 INFO L125 PetriNetUnfolderBase]: For 68/68 co-relation queries the response was YES. [2023-11-29 06:31:03,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1029 conditions, 448 events. 245/448 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1995 event pairs, 63 based on Foata normal form. 14/416 useless extension candidates. Maximal degree in co-relation 622. Up to 169 conditions per place. [2023-11-29 06:31:03,207 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 42 selfloop transitions, 10 changer transitions 0/57 dead transitions. [2023-11-29 06:31:03,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 57 transitions, 259 flow [2023-11-29 06:31:03,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:31:03,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 06:31:03,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 83 transitions. [2023-11-29 06:31:03,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6287878787878788 [2023-11-29 06:31:03,210 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 83 transitions. [2023-11-29 06:31:03,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 83 transitions. [2023-11-29 06:31:03,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:31:03,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 83 transitions. [2023-11-29 06:31:03,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:03,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:03,213 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:03,213 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 84 flow. Second operand 4 states and 83 transitions. [2023-11-29 06:31:03,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 57 transitions, 259 flow [2023-11-29 06:31:03,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 57 transitions, 252 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 06:31:03,216 INFO L231 Difference]: Finished difference. Result has 39 places, 36 transitions, 139 flow [2023-11-29 06:31:03,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=139, PETRI_PLACES=39, PETRI_TRANSITIONS=36} [2023-11-29 06:31:03,217 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 5 predicate places. [2023-11-29 06:31:03,218 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 36 transitions, 139 flow [2023-11-29 06:31:03,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:03,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:31:03,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 06:31:03,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 06:31:03,218 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-29 06:31:03,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:31:03,219 INFO L85 PathProgramCache]: Analyzing trace with hash -719595193, now seen corresponding path program 1 times [2023-11-29 06:31:03,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:31:03,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220222867] [2023-11-29 06:31:03,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:31:03,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:31:03,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:31:03,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:31:03,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:31:03,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220222867] [2023-11-29 06:31:03,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220222867] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:31:03,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:31:03,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:31:03,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105508861] [2023-11-29 06:31:03,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:31:03,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:31:03,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:31:03,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:31:03,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:31:03,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2023-11-29 06:31:03,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 36 transitions, 139 flow. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:03,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:31:03,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2023-11-29 06:31:03,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:31:03,354 INFO L124 PetriNetUnfolderBase]: 245/468 cut-off events. [2023-11-29 06:31:03,355 INFO L125 PetriNetUnfolderBase]: For 335/335 co-relation queries the response was YES. [2023-11-29 06:31:03,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1222 conditions, 468 events. 245/468 cut-off events. For 335/335 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2139 event pairs, 155 based on Foata normal form. 18/432 useless extension candidates. Maximal degree in co-relation 533. Up to 351 conditions per place. [2023-11-29 06:31:03,358 INFO L140 encePairwiseOnDemand]: 30/33 looper letters, 38 selfloop transitions, 4 changer transitions 0/46 dead transitions. [2023-11-29 06:31:03,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 46 transitions, 250 flow [2023-11-29 06:31:03,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:31:03,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 06:31:03,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 53 transitions. [2023-11-29 06:31:03,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5353535353535354 [2023-11-29 06:31:03,360 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 53 transitions. [2023-11-29 06:31:03,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 53 transitions. [2023-11-29 06:31:03,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:31:03,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 53 transitions. [2023-11-29 06:31:03,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:03,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:03,362 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:03,362 INFO L175 Difference]: Start difference. First operand has 39 places, 36 transitions, 139 flow. Second operand 3 states and 53 transitions. [2023-11-29 06:31:03,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 46 transitions, 250 flow [2023-11-29 06:31:03,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 46 transitions, 242 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 06:31:03,365 INFO L231 Difference]: Finished difference. Result has 39 places, 35 transitions, 138 flow [2023-11-29 06:31:03,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=39, PETRI_TRANSITIONS=35} [2023-11-29 06:31:03,366 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 5 predicate places. [2023-11-29 06:31:03,366 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 35 transitions, 138 flow [2023-11-29 06:31:03,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:03,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:31:03,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:31:03,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 06:31:03,367 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-29 06:31:03,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:31:03,368 INFO L85 PathProgramCache]: Analyzing trace with hash -833799035, now seen corresponding path program 1 times [2023-11-29 06:31:03,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:31:03,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050330892] [2023-11-29 06:31:03,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:31:03,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:31:03,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:31:03,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:31:03,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:31:03,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050330892] [2023-11-29 06:31:03,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050330892] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:31:03,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:31:03,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:31:03,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862833560] [2023-11-29 06:31:03,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:31:03,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:31:03,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:31:03,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:31:03,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:31:03,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2023-11-29 06:31:03,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 35 transitions, 138 flow. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:03,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:31:03,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2023-11-29 06:31:03,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:31:03,587 INFO L124 PetriNetUnfolderBase]: 276/481 cut-off events. [2023-11-29 06:31:03,587 INFO L125 PetriNetUnfolderBase]: For 507/507 co-relation queries the response was YES. [2023-11-29 06:31:03,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1332 conditions, 481 events. 276/481 cut-off events. For 507/507 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1982 event pairs, 28 based on Foata normal form. 20/440 useless extension candidates. Maximal degree in co-relation 651. Up to 286 conditions per place. [2023-11-29 06:31:03,591 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 52 selfloop transitions, 4 changer transitions 0/58 dead transitions. [2023-11-29 06:31:03,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 58 transitions, 366 flow [2023-11-29 06:31:03,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 06:31:03,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 06:31:03,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 75 transitions. [2023-11-29 06:31:03,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2023-11-29 06:31:03,593 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 75 transitions. [2023-11-29 06:31:03,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 75 transitions. [2023-11-29 06:31:03,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:31:03,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 75 transitions. [2023-11-29 06:31:03,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:03,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:03,595 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:03,595 INFO L175 Difference]: Start difference. First operand has 39 places, 35 transitions, 138 flow. Second operand 5 states and 75 transitions. [2023-11-29 06:31:03,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 58 transitions, 366 flow [2023-11-29 06:31:03,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 58 transitions, 346 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 06:31:03,598 INFO L231 Difference]: Finished difference. Result has 40 places, 34 transitions, 136 flow [2023-11-29 06:31:03,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=136, PETRI_PLACES=40, PETRI_TRANSITIONS=34} [2023-11-29 06:31:03,600 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 6 predicate places. [2023-11-29 06:31:03,600 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 34 transitions, 136 flow [2023-11-29 06:31:03,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:03,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:31:03,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:31:03,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 06:31:03,601 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-29 06:31:03,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:31:03,602 INFO L85 PathProgramCache]: Analyzing trace with hash -833799002, now seen corresponding path program 1 times [2023-11-29 06:31:03,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:31:03,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920351051] [2023-11-29 06:31:03,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:31:03,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:31:03,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:31:03,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:31:03,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:31:03,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920351051] [2023-11-29 06:31:03,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920351051] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:31:03,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:31:03,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:31:03,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685790878] [2023-11-29 06:31:03,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:31:03,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:31:03,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:31:03,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:31:03,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:31:03,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2023-11-29 06:31:03,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 34 transitions, 136 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:03,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:31:03,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2023-11-29 06:31:03,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:31:03,778 INFO L124 PetriNetUnfolderBase]: 220/395 cut-off events. [2023-11-29 06:31:03,779 INFO L125 PetriNetUnfolderBase]: For 320/320 co-relation queries the response was YES. [2023-11-29 06:31:03,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1097 conditions, 395 events. 220/395 cut-off events. For 320/320 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1607 event pairs, 72 based on Foata normal form. 0/388 useless extension candidates. Maximal degree in co-relation 478. Up to 165 conditions per place. [2023-11-29 06:31:03,782 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 40 selfloop transitions, 10 changer transitions 0/53 dead transitions. [2023-11-29 06:31:03,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 53 transitions, 314 flow [2023-11-29 06:31:03,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:31:03,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 06:31:03,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 76 transitions. [2023-11-29 06:31:03,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5757575757575758 [2023-11-29 06:31:03,784 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 76 transitions. [2023-11-29 06:31:03,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 76 transitions. [2023-11-29 06:31:03,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:31:03,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 76 transitions. [2023-11-29 06:31:03,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:03,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:03,786 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:03,786 INFO L175 Difference]: Start difference. First operand has 40 places, 34 transitions, 136 flow. Second operand 4 states and 76 transitions. [2023-11-29 06:31:03,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 53 transitions, 314 flow [2023-11-29 06:31:03,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 53 transitions, 300 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 06:31:03,789 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 177 flow [2023-11-29 06:31:03,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=177, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2023-11-29 06:31:03,790 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 7 predicate places. [2023-11-29 06:31:03,790 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 177 flow [2023-11-29 06:31:03,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:03,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:31:03,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:31:03,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 06:31:03,791 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-29 06:31:03,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:31:03,792 INFO L85 PathProgramCache]: Analyzing trace with hash -833799001, now seen corresponding path program 1 times [2023-11-29 06:31:03,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:31:03,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272917724] [2023-11-29 06:31:03,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:31:03,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:31:03,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:31:03,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:31:03,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:31:03,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272917724] [2023-11-29 06:31:03,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272917724] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:31:03,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:31:03,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:31:03,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010624980] [2023-11-29 06:31:03,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:31:03,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:31:03,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:31:03,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:31:03,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:31:03,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2023-11-29 06:31:03,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 177 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:03,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:31:03,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2023-11-29 06:31:03,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:31:04,000 INFO L124 PetriNetUnfolderBase]: 284/499 cut-off events. [2023-11-29 06:31:04,000 INFO L125 PetriNetUnfolderBase]: For 486/486 co-relation queries the response was YES. [2023-11-29 06:31:04,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1515 conditions, 499 events. 284/499 cut-off events. For 486/486 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2037 event pairs, 99 based on Foata normal form. 14/512 useless extension candidates. Maximal degree in co-relation 778. Up to 187 conditions per place. [2023-11-29 06:31:04,005 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 40 selfloop transitions, 20 changer transitions 0/63 dead transitions. [2023-11-29 06:31:04,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 63 transitions, 435 flow [2023-11-29 06:31:04,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:31:04,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 06:31:04,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 79 transitions. [2023-11-29 06:31:04,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5984848484848485 [2023-11-29 06:31:04,007 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 79 transitions. [2023-11-29 06:31:04,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 79 transitions. [2023-11-29 06:31:04,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:31:04,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 79 transitions. [2023-11-29 06:31:04,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:04,008 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:04,009 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:04,009 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 177 flow. Second operand 4 states and 79 transitions. [2023-11-29 06:31:04,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 63 transitions, 435 flow [2023-11-29 06:31:04,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 63 transitions, 418 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 06:31:04,013 INFO L231 Difference]: Finished difference. Result has 45 places, 48 transitions, 309 flow [2023-11-29 06:31:04,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=309, PETRI_PLACES=45, PETRI_TRANSITIONS=48} [2023-11-29 06:31:04,014 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 11 predicate places. [2023-11-29 06:31:04,014 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 48 transitions, 309 flow [2023-11-29 06:31:04,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:04,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:31:04,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:31:04,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 06:31:04,015 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-29 06:31:04,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:31:04,015 INFO L85 PathProgramCache]: Analyzing trace with hash -41237012, now seen corresponding path program 1 times [2023-11-29 06:31:04,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:31:04,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669483483] [2023-11-29 06:31:04,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:31:04,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:31:04,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:31:04,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:31:04,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:31:04,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669483483] [2023-11-29 06:31:04,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669483483] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:31:04,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:31:04,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:31:04,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239481] [2023-11-29 06:31:04,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:31:04,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:31:04,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:31:04,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:31:04,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:31:04,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2023-11-29 06:31:04,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 48 transitions, 309 flow. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:04,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:31:04,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2023-11-29 06:31:04,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:31:04,223 INFO L124 PetriNetUnfolderBase]: 257/454 cut-off events. [2023-11-29 06:31:04,223 INFO L125 PetriNetUnfolderBase]: For 638/638 co-relation queries the response was YES. [2023-11-29 06:31:04,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1564 conditions, 454 events. 257/454 cut-off events. For 638/638 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1819 event pairs, 72 based on Foata normal form. 16/470 useless extension candidates. Maximal degree in co-relation 839. Up to 183 conditions per place. [2023-11-29 06:31:04,227 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 50 selfloop transitions, 24 changer transitions 0/77 dead transitions. [2023-11-29 06:31:04,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 77 transitions, 607 flow [2023-11-29 06:31:04,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 06:31:04,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 06:31:04,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 87 transitions. [2023-11-29 06:31:04,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5272727272727272 [2023-11-29 06:31:04,229 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 87 transitions. [2023-11-29 06:31:04,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 87 transitions. [2023-11-29 06:31:04,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:31:04,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 87 transitions. [2023-11-29 06:31:04,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:04,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:04,231 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:04,231 INFO L175 Difference]: Start difference. First operand has 45 places, 48 transitions, 309 flow. Second operand 5 states and 87 transitions. [2023-11-29 06:31:04,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 77 transitions, 607 flow [2023-11-29 06:31:04,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 77 transitions, 586 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 06:31:04,237 INFO L231 Difference]: Finished difference. Result has 50 places, 53 transitions, 410 flow [2023-11-29 06:31:04,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=410, PETRI_PLACES=50, PETRI_TRANSITIONS=53} [2023-11-29 06:31:04,238 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 16 predicate places. [2023-11-29 06:31:04,238 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 53 transitions, 410 flow [2023-11-29 06:31:04,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:04,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:31:04,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:31:04,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 06:31:04,239 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-29 06:31:04,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:31:04,239 INFO L85 PathProgramCache]: Analyzing trace with hash -77966016, now seen corresponding path program 1 times [2023-11-29 06:31:04,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:31:04,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753012581] [2023-11-29 06:31:04,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:31:04,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:31:04,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:31:04,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:31:04,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:31:04,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753012581] [2023-11-29 06:31:04,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753012581] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:31:04,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:31:04,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:31:04,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499949893] [2023-11-29 06:31:04,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:31:04,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:31:04,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:31:04,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:31:04,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:31:04,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2023-11-29 06:31:04,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 53 transitions, 410 flow. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:04,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:31:04,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2023-11-29 06:31:04,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:31:04,390 INFO L124 PetriNetUnfolderBase]: 257/438 cut-off events. [2023-11-29 06:31:04,391 INFO L125 PetriNetUnfolderBase]: For 1065/1065 co-relation queries the response was YES. [2023-11-29 06:31:04,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1691 conditions, 438 events. 257/438 cut-off events. For 1065/1065 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1648 event pairs, 141 based on Foata normal form. 18/455 useless extension candidates. Maximal degree in co-relation 1074. Up to 361 conditions per place. [2023-11-29 06:31:04,396 INFO L140 encePairwiseOnDemand]: 30/33 looper letters, 57 selfloop transitions, 4 changer transitions 0/63 dead transitions. [2023-11-29 06:31:04,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 63 transitions, 602 flow [2023-11-29 06:31:04,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:31:04,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 06:31:04,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 51 transitions. [2023-11-29 06:31:04,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5151515151515151 [2023-11-29 06:31:04,397 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 51 transitions. [2023-11-29 06:31:04,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 51 transitions. [2023-11-29 06:31:04,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:31:04,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 51 transitions. [2023-11-29 06:31:04,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:04,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:04,399 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:04,399 INFO L175 Difference]: Start difference. First operand has 50 places, 53 transitions, 410 flow. Second operand 3 states and 51 transitions. [2023-11-29 06:31:04,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 63 transitions, 602 flow [2023-11-29 06:31:04,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 63 transitions, 579 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 06:31:04,405 INFO L231 Difference]: Finished difference. Result has 50 places, 52 transitions, 395 flow [2023-11-29 06:31:04,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=395, PETRI_PLACES=50, PETRI_TRANSITIONS=52} [2023-11-29 06:31:04,406 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 16 predicate places. [2023-11-29 06:31:04,406 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 52 transitions, 395 flow [2023-11-29 06:31:04,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:04,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:31:04,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:31:04,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 06:31:04,407 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-29 06:31:04,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:31:04,408 INFO L85 PathProgramCache]: Analyzing trace with hash 614226333, now seen corresponding path program 1 times [2023-11-29 06:31:04,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:31:04,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290822064] [2023-11-29 06:31:04,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:31:04,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:31:04,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:31:04,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:31:04,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:31:04,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290822064] [2023-11-29 06:31:04,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290822064] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:31:04,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:31:04,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 06:31:04,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781054648] [2023-11-29 06:31:04,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:31:04,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:31:04,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:31:04,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:31:04,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:31:04,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2023-11-29 06:31:04,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 52 transitions, 395 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:04,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:31:04,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2023-11-29 06:31:04,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:31:04,733 INFO L124 PetriNetUnfolderBase]: 319/566 cut-off events. [2023-11-29 06:31:04,734 INFO L125 PetriNetUnfolderBase]: For 1185/1185 co-relation queries the response was YES. [2023-11-29 06:31:04,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2019 conditions, 566 events. 319/566 cut-off events. For 1185/1185 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2429 event pairs, 39 based on Foata normal form. 6/572 useless extension candidates. Maximal degree in co-relation 1208. Up to 155 conditions per place. [2023-11-29 06:31:04,738 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 62 selfloop transitions, 37 changer transitions 0/101 dead transitions. [2023-11-29 06:31:04,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 101 transitions, 803 flow [2023-11-29 06:31:04,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 06:31:04,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 06:31:04,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2023-11-29 06:31:04,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5387205387205387 [2023-11-29 06:31:04,740 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 160 transitions. [2023-11-29 06:31:04,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 160 transitions. [2023-11-29 06:31:04,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:31:04,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 160 transitions. [2023-11-29 06:31:04,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 17.77777777777778) internal successors, (160), 9 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:04,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 33.0) internal successors, (330), 10 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:04,743 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 33.0) internal successors, (330), 10 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:04,743 INFO L175 Difference]: Start difference. First operand has 50 places, 52 transitions, 395 flow. Second operand 9 states and 160 transitions. [2023-11-29 06:31:04,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 101 transitions, 803 flow [2023-11-29 06:31:04,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 101 transitions, 779 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 06:31:04,748 INFO L231 Difference]: Finished difference. Result has 58 places, 62 transitions, 537 flow [2023-11-29 06:31:04,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=537, PETRI_PLACES=58, PETRI_TRANSITIONS=62} [2023-11-29 06:31:04,749 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 24 predicate places. [2023-11-29 06:31:04,750 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 62 transitions, 537 flow [2023-11-29 06:31:04,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:04,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:31:04,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:31:04,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 06:31:04,750 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-29 06:31:04,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:31:04,751 INFO L85 PathProgramCache]: Analyzing trace with hash 2059797160, now seen corresponding path program 1 times [2023-11-29 06:31:04,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:31:04,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011699824] [2023-11-29 06:31:04,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:31:04,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:31:04,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:31:04,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:31:04,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:31:04,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011699824] [2023-11-29 06:31:04,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011699824] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:31:04,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:31:04,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 06:31:04,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041927813] [2023-11-29 06:31:04,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:31:04,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:31:04,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:31:04,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:31:04,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:31:04,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2023-11-29 06:31:04,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 62 transitions, 537 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:04,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:31:04,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2023-11-29 06:31:04,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:31:04,996 INFO L124 PetriNetUnfolderBase]: 347/602 cut-off events. [2023-11-29 06:31:04,996 INFO L125 PetriNetUnfolderBase]: For 2063/2063 co-relation queries the response was YES. [2023-11-29 06:31:04,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2392 conditions, 602 events. 347/602 cut-off events. For 2063/2063 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2590 event pairs, 67 based on Foata normal form. 12/613 useless extension candidates. Maximal degree in co-relation 1837. Up to 283 conditions per place. [2023-11-29 06:31:05,001 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 63 selfloop transitions, 38 changer transitions 0/103 dead transitions. [2023-11-29 06:31:05,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 103 transitions, 1042 flow [2023-11-29 06:31:05,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 06:31:05,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 06:31:05,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 125 transitions. [2023-11-29 06:31:05,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4734848484848485 [2023-11-29 06:31:05,003 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 125 transitions. [2023-11-29 06:31:05,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 125 transitions. [2023-11-29 06:31:05,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:31:05,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 125 transitions. [2023-11-29 06:31:05,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 15.625) internal successors, (125), 8 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:05,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 33.0) internal successors, (297), 9 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:05,005 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 33.0) internal successors, (297), 9 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:05,005 INFO L175 Difference]: Start difference. First operand has 58 places, 62 transitions, 537 flow. Second operand 8 states and 125 transitions. [2023-11-29 06:31:05,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 103 transitions, 1042 flow [2023-11-29 06:31:05,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 103 transitions, 902 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-11-29 06:31:05,011 INFO L231 Difference]: Finished difference. Result has 62 places, 78 transitions, 700 flow [2023-11-29 06:31:05,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=700, PETRI_PLACES=62, PETRI_TRANSITIONS=78} [2023-11-29 06:31:05,012 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 28 predicate places. [2023-11-29 06:31:05,012 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 78 transitions, 700 flow [2023-11-29 06:31:05,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:05,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:31:05,012 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:31:05,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 06:31:05,012 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-29 06:31:05,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:31:05,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1204526162, now seen corresponding path program 2 times [2023-11-29 06:31:05,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:31:05,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055645810] [2023-11-29 06:31:05,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:31:05,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:31:05,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:31:05,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:31:05,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:31:05,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055645810] [2023-11-29 06:31:05,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055645810] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:31:05,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:31:05,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 06:31:05,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038828657] [2023-11-29 06:31:05,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:31:05,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:31:05,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:31:05,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:31:05,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:31:05,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2023-11-29 06:31:05,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 78 transitions, 700 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:05,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:31:05,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2023-11-29 06:31:05,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:31:05,289 INFO L124 PetriNetUnfolderBase]: 361/648 cut-off events. [2023-11-29 06:31:05,289 INFO L125 PetriNetUnfolderBase]: For 1834/1834 co-relation queries the response was YES. [2023-11-29 06:31:05,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2609 conditions, 648 events. 361/648 cut-off events. For 1834/1834 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2824 event pairs, 81 based on Foata normal form. 12/659 useless extension candidates. Maximal degree in co-relation 2146. Up to 231 conditions per place. [2023-11-29 06:31:05,294 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 61 selfloop transitions, 42 changer transitions 0/105 dead transitions. [2023-11-29 06:31:05,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 105 transitions, 1068 flow [2023-11-29 06:31:05,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 06:31:05,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 06:31:05,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 123 transitions. [2023-11-29 06:31:05,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4659090909090909 [2023-11-29 06:31:05,296 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 123 transitions. [2023-11-29 06:31:05,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 123 transitions. [2023-11-29 06:31:05,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:31:05,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 123 transitions. [2023-11-29 06:31:05,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:05,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 33.0) internal successors, (297), 9 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:05,298 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 33.0) internal successors, (297), 9 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:05,298 INFO L175 Difference]: Start difference. First operand has 62 places, 78 transitions, 700 flow. Second operand 8 states and 123 transitions. [2023-11-29 06:31:05,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 105 transitions, 1068 flow [2023-11-29 06:31:05,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 105 transitions, 1019 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-11-29 06:31:05,305 INFO L231 Difference]: Finished difference. Result has 70 places, 82 transitions, 848 flow [2023-11-29 06:31:05,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=655, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=848, PETRI_PLACES=70, PETRI_TRANSITIONS=82} [2023-11-29 06:31:05,306 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 36 predicate places. [2023-11-29 06:31:05,306 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 82 transitions, 848 flow [2023-11-29 06:31:05,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:05,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:31:05,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:31:05,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 06:31:05,307 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-29 06:31:05,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:31:05,308 INFO L85 PathProgramCache]: Analyzing trace with hash 614341653, now seen corresponding path program 2 times [2023-11-29 06:31:05,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:31:05,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833073727] [2023-11-29 06:31:05,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:31:05,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:31:05,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:31:05,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:31:05,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:31:05,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833073727] [2023-11-29 06:31:05,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833073727] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:31:05,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:31:05,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 06:31:05,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181467553] [2023-11-29 06:31:05,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:31:05,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:31:05,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:31:05,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:31:05,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:31:05,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2023-11-29 06:31:05,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 82 transitions, 848 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:05,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:31:05,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2023-11-29 06:31:05,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:31:05,642 INFO L124 PetriNetUnfolderBase]: 427/776 cut-off events. [2023-11-29 06:31:05,642 INFO L125 PetriNetUnfolderBase]: For 2850/2854 co-relation queries the response was YES. [2023-11-29 06:31:05,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3335 conditions, 776 events. 427/776 cut-off events. For 2850/2854 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3650 event pairs, 61 based on Foata normal form. 22/798 useless extension candidates. Maximal degree in co-relation 2831. Up to 367 conditions per place. [2023-11-29 06:31:05,651 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 73 selfloop transitions, 56 changer transitions 2/133 dead transitions. [2023-11-29 06:31:05,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 133 transitions, 1517 flow [2023-11-29 06:31:05,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 06:31:05,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 06:31:05,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2023-11-29 06:31:05,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5492424242424242 [2023-11-29 06:31:05,653 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 145 transitions. [2023-11-29 06:31:05,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 145 transitions. [2023-11-29 06:31:05,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:31:05,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 145 transitions. [2023-11-29 06:31:05,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:05,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 33.0) internal successors, (297), 9 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:05,655 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 33.0) internal successors, (297), 9 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:05,655 INFO L175 Difference]: Start difference. First operand has 70 places, 82 transitions, 848 flow. Second operand 8 states and 145 transitions. [2023-11-29 06:31:05,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 133 transitions, 1517 flow [2023-11-29 06:31:05,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 133 transitions, 1455 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-29 06:31:05,669 INFO L231 Difference]: Finished difference. Result has 77 places, 91 transitions, 1084 flow [2023-11-29 06:31:05,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=809, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1084, PETRI_PLACES=77, PETRI_TRANSITIONS=91} [2023-11-29 06:31:05,669 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 43 predicate places. [2023-11-29 06:31:05,670 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 91 transitions, 1084 flow [2023-11-29 06:31:05,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:05,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:31:05,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:31:05,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 06:31:05,670 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-29 06:31:05,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:31:05,671 INFO L85 PathProgramCache]: Analyzing trace with hash 2059791580, now seen corresponding path program 3 times [2023-11-29 06:31:05,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:31:05,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438497193] [2023-11-29 06:31:05,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:31:05,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:31:05,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:31:05,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:31:05,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:31:05,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438497193] [2023-11-29 06:31:05,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438497193] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:31:05,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:31:05,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 06:31:05,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607549680] [2023-11-29 06:31:05,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:31:05,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:31:05,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:31:05,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:31:05,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:31:05,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2023-11-29 06:31:05,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 91 transitions, 1084 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:05,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:31:05,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2023-11-29 06:31:05,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:31:05,969 INFO L124 PetriNetUnfolderBase]: 399/715 cut-off events. [2023-11-29 06:31:05,969 INFO L125 PetriNetUnfolderBase]: For 3530/3534 co-relation queries the response was YES. [2023-11-29 06:31:05,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3323 conditions, 715 events. 399/715 cut-off events. For 3530/3534 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3307 event pairs, 69 based on Foata normal form. 24/738 useless extension candidates. Maximal degree in co-relation 2979. Up to 196 conditions per place. [2023-11-29 06:31:05,977 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 64 selfloop transitions, 47 changer transitions 0/113 dead transitions. [2023-11-29 06:31:05,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 113 transitions, 1392 flow [2023-11-29 06:31:05,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 06:31:05,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 06:31:05,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 121 transitions. [2023-11-29 06:31:05,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2023-11-29 06:31:05,979 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 121 transitions. [2023-11-29 06:31:05,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 121 transitions. [2023-11-29 06:31:05,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:31:05,979 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 121 transitions. [2023-11-29 06:31:05,980 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 15.125) internal successors, (121), 8 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:05,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 33.0) internal successors, (297), 9 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:05,981 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 33.0) internal successors, (297), 9 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:05,981 INFO L175 Difference]: Start difference. First operand has 77 places, 91 transitions, 1084 flow. Second operand 8 states and 121 transitions. [2023-11-29 06:31:05,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 113 transitions, 1392 flow [2023-11-29 06:31:05,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 113 transitions, 1155 flow, removed 4 selfloop flow, removed 9 redundant places. [2023-11-29 06:31:05,996 INFO L231 Difference]: Finished difference. Result has 73 places, 87 transitions, 915 flow [2023-11-29 06:31:05,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=821, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=915, PETRI_PLACES=73, PETRI_TRANSITIONS=87} [2023-11-29 06:31:05,997 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 39 predicate places. [2023-11-29 06:31:05,997 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 87 transitions, 915 flow [2023-11-29 06:31:05,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:05,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:31:05,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:31:05,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 06:31:05,997 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-29 06:31:05,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:31:05,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1922370215, now seen corresponding path program 3 times [2023-11-29 06:31:05,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:31:05,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387878878] [2023-11-29 06:31:05,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:31:05,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:31:06,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:31:06,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:31:06,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:31:06,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387878878] [2023-11-29 06:31:06,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387878878] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:31:06,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:31:06,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 06:31:06,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333692447] [2023-11-29 06:31:06,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:31:06,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:31:06,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:31:06,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:31:06,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:31:06,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2023-11-29 06:31:06,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 87 transitions, 915 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:06,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:31:06,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2023-11-29 06:31:06,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:31:06,296 INFO L124 PetriNetUnfolderBase]: 436/809 cut-off events. [2023-11-29 06:31:06,296 INFO L125 PetriNetUnfolderBase]: For 2624/2628 co-relation queries the response was YES. [2023-11-29 06:31:06,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3518 conditions, 809 events. 436/809 cut-off events. For 2624/2628 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3965 event pairs, 101 based on Foata normal form. 22/830 useless extension candidates. Maximal degree in co-relation 3165. Up to 403 conditions per place. [2023-11-29 06:31:06,305 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 61 selfloop transitions, 49 changer transitions 3/115 dead transitions. [2023-11-29 06:31:06,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 115 transitions, 1330 flow [2023-11-29 06:31:06,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:31:06,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 06:31:06,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 108 transitions. [2023-11-29 06:31:06,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2023-11-29 06:31:06,307 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 108 transitions. [2023-11-29 06:31:06,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 108 transitions. [2023-11-29 06:31:06,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:31:06,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 108 transitions. [2023-11-29 06:31:06,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:06,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 33.0) internal successors, (231), 7 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:06,309 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 33.0) internal successors, (231), 7 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:06,309 INFO L175 Difference]: Start difference. First operand has 73 places, 87 transitions, 915 flow. Second operand 6 states and 108 transitions. [2023-11-29 06:31:06,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 115 transitions, 1330 flow [2023-11-29 06:31:06,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 115 transitions, 1231 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-11-29 06:31:06,321 INFO L231 Difference]: Finished difference. Result has 74 places, 90 transitions, 971 flow [2023-11-29 06:31:06,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=834, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=971, PETRI_PLACES=74, PETRI_TRANSITIONS=90} [2023-11-29 06:31:06,321 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 40 predicate places. [2023-11-29 06:31:06,322 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 90 transitions, 971 flow [2023-11-29 06:31:06,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:06,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:31:06,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:31:06,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 06:31:06,322 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-29 06:31:06,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:31:06,323 INFO L85 PathProgramCache]: Analyzing trace with hash 614347562, now seen corresponding path program 1 times [2023-11-29 06:31:06,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:31:06,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341831670] [2023-11-29 06:31:06,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:31:06,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:31:06,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:31:06,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:31:06,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:31:06,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341831670] [2023-11-29 06:31:06,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341831670] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:31:06,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:31:06,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 06:31:06,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825912504] [2023-11-29 06:31:06,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:31:06,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:31:06,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:31:06,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:31:06,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:31:06,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2023-11-29 06:31:06,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 90 transitions, 971 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:06,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:31:06,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2023-11-29 06:31:06,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:31:06,604 INFO L124 PetriNetUnfolderBase]: 438/799 cut-off events. [2023-11-29 06:31:06,604 INFO L125 PetriNetUnfolderBase]: For 2701/2709 co-relation queries the response was YES. [2023-11-29 06:31:06,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3565 conditions, 799 events. 438/799 cut-off events. For 2701/2709 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3873 event pairs, 119 based on Foata normal form. 6/804 useless extension candidates. Maximal degree in co-relation 3181. Up to 376 conditions per place. [2023-11-29 06:31:06,613 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 64 selfloop transitions, 46 changer transitions 0/112 dead transitions. [2023-11-29 06:31:06,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 112 transitions, 1324 flow [2023-11-29 06:31:06,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:31:06,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 06:31:06,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 99 transitions. [2023-11-29 06:31:06,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-11-29 06:31:06,614 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 99 transitions. [2023-11-29 06:31:06,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 99 transitions. [2023-11-29 06:31:06,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:31:06,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 99 transitions. [2023-11-29 06:31:06,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:06,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 33.0) internal successors, (231), 7 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:06,616 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 33.0) internal successors, (231), 7 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:06,616 INFO L175 Difference]: Start difference. First operand has 74 places, 90 transitions, 971 flow. Second operand 6 states and 99 transitions. [2023-11-29 06:31:06,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 112 transitions, 1324 flow [2023-11-29 06:31:06,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 112 transitions, 1237 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-11-29 06:31:06,627 INFO L231 Difference]: Finished difference. Result has 79 places, 93 transitions, 1068 flow [2023-11-29 06:31:06,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=896, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1068, PETRI_PLACES=79, PETRI_TRANSITIONS=93} [2023-11-29 06:31:06,628 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 45 predicate places. [2023-11-29 06:31:06,628 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 93 transitions, 1068 flow [2023-11-29 06:31:06,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:06,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:31:06,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:31:06,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 06:31:06,629 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-29 06:31:06,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:31:06,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1204526493, now seen corresponding path program 1 times [2023-11-29 06:31:06,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:31:06,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906553741] [2023-11-29 06:31:06,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:31:06,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:31:06,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:31:06,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:31:06,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:31:06,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906553741] [2023-11-29 06:31:06,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906553741] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:31:06,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:31:06,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 06:31:06,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343215515] [2023-11-29 06:31:06,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:31:06,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:31:06,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:31:06,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:31:06,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:31:06,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2023-11-29 06:31:06,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 93 transitions, 1068 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:06,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:31:06,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2023-11-29 06:31:06,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:31:06,930 INFO L124 PetriNetUnfolderBase]: 454/843 cut-off events. [2023-11-29 06:31:06,930 INFO L125 PetriNetUnfolderBase]: For 3229/3237 co-relation queries the response was YES. [2023-11-29 06:31:06,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3669 conditions, 843 events. 454/843 cut-off events. For 3229/3237 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4195 event pairs, 88 based on Foata normal form. 16/857 useless extension candidates. Maximal degree in co-relation 3326. Up to 437 conditions per place. [2023-11-29 06:31:06,939 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 67 selfloop transitions, 51 changer transitions 2/122 dead transitions. [2023-11-29 06:31:06,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 122 transitions, 1488 flow [2023-11-29 06:31:06,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:31:06,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 06:31:06,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 110 transitions. [2023-11-29 06:31:06,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2023-11-29 06:31:06,941 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 110 transitions. [2023-11-29 06:31:06,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 110 transitions. [2023-11-29 06:31:06,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:31:06,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 110 transitions. [2023-11-29 06:31:06,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:06,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 33.0) internal successors, (231), 7 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:06,942 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 33.0) internal successors, (231), 7 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:06,942 INFO L175 Difference]: Start difference. First operand has 79 places, 93 transitions, 1068 flow. Second operand 6 states and 110 transitions. [2023-11-29 06:31:06,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 122 transitions, 1488 flow [2023-11-29 06:31:06,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 122 transitions, 1466 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-29 06:31:06,959 INFO L231 Difference]: Finished difference. Result has 85 places, 94 transitions, 1197 flow [2023-11-29 06:31:06,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1051, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1197, PETRI_PLACES=85, PETRI_TRANSITIONS=94} [2023-11-29 06:31:06,960 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 51 predicate places. [2023-11-29 06:31:06,960 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 94 transitions, 1197 flow [2023-11-29 06:31:06,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:06,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:31:06,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:31:06,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 06:31:06,960 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-29 06:31:06,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:31:06,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1910413805, now seen corresponding path program 2 times [2023-11-29 06:31:06,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:31:06,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524089885] [2023-11-29 06:31:06,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:31:06,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:31:06,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:31:07,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:31:07,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:31:07,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524089885] [2023-11-29 06:31:07,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524089885] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:31:07,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:31:07,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 06:31:07,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314283515] [2023-11-29 06:31:07,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:31:07,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:31:07,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:31:07,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:31:07,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:31:07,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2023-11-29 06:31:07,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 94 transitions, 1197 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:07,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:31:07,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2023-11-29 06:31:07,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:31:07,324 INFO L124 PetriNetUnfolderBase]: 468/875 cut-off events. [2023-11-29 06:31:07,324 INFO L125 PetriNetUnfolderBase]: For 4413/4421 co-relation queries the response was YES. [2023-11-29 06:31:07,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3940 conditions, 875 events. 468/875 cut-off events. For 4413/4421 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4407 event pairs, 76 based on Foata normal form. 16/891 useless extension candidates. Maximal degree in co-relation 3617. Up to 459 conditions per place. [2023-11-29 06:31:07,335 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 72 selfloop transitions, 57 changer transitions 3/134 dead transitions. [2023-11-29 06:31:07,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 134 transitions, 1729 flow [2023-11-29 06:31:07,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 06:31:07,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 06:31:07,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2023-11-29 06:31:07,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5378787878787878 [2023-11-29 06:31:07,337 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 142 transitions. [2023-11-29 06:31:07,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 142 transitions. [2023-11-29 06:31:07,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:31:07,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 142 transitions. [2023-11-29 06:31:07,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:07,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 33.0) internal successors, (297), 9 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:07,339 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 33.0) internal successors, (297), 9 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:07,339 INFO L175 Difference]: Start difference. First operand has 85 places, 94 transitions, 1197 flow. Second operand 8 states and 142 transitions. [2023-11-29 06:31:07,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 134 transitions, 1729 flow [2023-11-29 06:31:07,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 134 transitions, 1660 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-11-29 06:31:07,362 INFO L231 Difference]: Finished difference. Result has 91 places, 95 transitions, 1290 flow [2023-11-29 06:31:07,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1130, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1290, PETRI_PLACES=91, PETRI_TRANSITIONS=95} [2023-11-29 06:31:07,362 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 57 predicate places. [2023-11-29 06:31:07,363 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 95 transitions, 1290 flow [2023-11-29 06:31:07,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:07,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:31:07,363 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:31:07,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 06:31:07,363 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-29 06:31:07,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:31:07,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1910413806, now seen corresponding path program 2 times [2023-11-29 06:31:07,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:31:07,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416773034] [2023-11-29 06:31:07,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:31:07,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:31:07,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:31:07,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:31:07,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:31:07,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416773034] [2023-11-29 06:31:07,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416773034] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:31:07,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:31:07,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 06:31:07,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39675254] [2023-11-29 06:31:07,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:31:07,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:31:07,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:31:07,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:31:07,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:31:07,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2023-11-29 06:31:07,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 95 transitions, 1290 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:07,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:31:07,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2023-11-29 06:31:07,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:31:07,635 INFO L124 PetriNetUnfolderBase]: 470/876 cut-off events. [2023-11-29 06:31:07,635 INFO L125 PetriNetUnfolderBase]: For 5251/5255 co-relation queries the response was YES. [2023-11-29 06:31:07,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4098 conditions, 876 events. 470/876 cut-off events. For 5251/5255 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4431 event pairs, 115 based on Foata normal form. 12/887 useless extension candidates. Maximal degree in co-relation 3751. Up to 351 conditions per place. [2023-11-29 06:31:07,645 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 68 selfloop transitions, 43 changer transitions 0/113 dead transitions. [2023-11-29 06:31:07,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 113 transitions, 1641 flow [2023-11-29 06:31:07,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:31:07,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 06:31:07,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 93 transitions. [2023-11-29 06:31:07,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4696969696969697 [2023-11-29 06:31:07,646 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 93 transitions. [2023-11-29 06:31:07,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 93 transitions. [2023-11-29 06:31:07,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:31:07,647 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 93 transitions. [2023-11-29 06:31:07,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:07,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 33.0) internal successors, (231), 7 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:07,648 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 33.0) internal successors, (231), 7 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:07,648 INFO L175 Difference]: Start difference. First operand has 91 places, 95 transitions, 1290 flow. Second operand 6 states and 93 transitions. [2023-11-29 06:31:07,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 113 transitions, 1641 flow [2023-11-29 06:31:07,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 113 transitions, 1506 flow, removed 6 selfloop flow, removed 6 redundant places. [2023-11-29 06:31:07,669 INFO L231 Difference]: Finished difference. Result has 92 places, 96 transitions, 1303 flow [2023-11-29 06:31:07,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1172, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1303, PETRI_PLACES=92, PETRI_TRANSITIONS=96} [2023-11-29 06:31:07,670 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 58 predicate places. [2023-11-29 06:31:07,670 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 96 transitions, 1303 flow [2023-11-29 06:31:07,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:07,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:31:07,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:31:07,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 06:31:07,671 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-29 06:31:07,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:31:07,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1922047176, now seen corresponding path program 3 times [2023-11-29 06:31:07,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:31:07,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432949175] [2023-11-29 06:31:07,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:31:07,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:31:07,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:31:07,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:31:07,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:31:07,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432949175] [2023-11-29 06:31:07,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432949175] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:31:07,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:31:07,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 06:31:07,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396486081] [2023-11-29 06:31:07,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:31:07,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:31:07,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:31:07,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:31:07,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:31:07,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2023-11-29 06:31:07,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 96 transitions, 1303 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:07,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:31:07,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2023-11-29 06:31:07,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:31:07,939 INFO L124 PetriNetUnfolderBase]: 458/860 cut-off events. [2023-11-29 06:31:07,939 INFO L125 PetriNetUnfolderBase]: For 5030/5034 co-relation queries the response was YES. [2023-11-29 06:31:07,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3963 conditions, 860 events. 458/860 cut-off events. For 5030/5034 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4358 event pairs, 119 based on Foata normal form. 12/871 useless extension candidates. Maximal degree in co-relation 3749. Up to 463 conditions per place. [2023-11-29 06:31:07,948 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 64 selfloop transitions, 42 changer transitions 2/110 dead transitions. [2023-11-29 06:31:07,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 110 transitions, 1585 flow [2023-11-29 06:31:07,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:31:07,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 06:31:07,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 95 transitions. [2023-11-29 06:31:07,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4797979797979798 [2023-11-29 06:31:07,953 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 95 transitions. [2023-11-29 06:31:07,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 95 transitions. [2023-11-29 06:31:07,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:31:07,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 95 transitions. [2023-11-29 06:31:07,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:07,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 33.0) internal successors, (231), 7 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:07,955 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 33.0) internal successors, (231), 7 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:07,955 INFO L175 Difference]: Start difference. First operand has 92 places, 96 transitions, 1303 flow. Second operand 6 states and 95 transitions. [2023-11-29 06:31:07,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 110 transitions, 1585 flow [2023-11-29 06:31:07,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 110 transitions, 1306 flow, removed 3 selfloop flow, removed 11 redundant places. [2023-11-29 06:31:07,974 INFO L231 Difference]: Finished difference. Result has 85 places, 91 transitions, 1039 flow [2023-11-29 06:31:07,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=996, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1039, PETRI_PLACES=85, PETRI_TRANSITIONS=91} [2023-11-29 06:31:07,975 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 51 predicate places. [2023-11-29 06:31:07,975 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 91 transitions, 1039 flow [2023-11-29 06:31:07,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:07,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:31:07,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:31:07,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 06:31:07,976 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-29 06:31:07,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:31:07,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1910888187, now seen corresponding path program 1 times [2023-11-29 06:31:07,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:31:07,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566361310] [2023-11-29 06:31:07,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:31:07,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:31:07,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:31:08,034 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:31:08,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:31:08,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566361310] [2023-11-29 06:31:08,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566361310] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:31:08,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:31:08,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:31:08,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154454021] [2023-11-29 06:31:08,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:31:08,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:31:08,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:31:08,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:31:08,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:31:08,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2023-11-29 06:31:08,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 91 transitions, 1039 flow. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:08,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:31:08,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2023-11-29 06:31:08,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:31:08,193 INFO L124 PetriNetUnfolderBase]: 424/792 cut-off events. [2023-11-29 06:31:08,193 INFO L125 PetriNetUnfolderBase]: For 2991/2991 co-relation queries the response was YES. [2023-11-29 06:31:08,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3325 conditions, 792 events. 424/792 cut-off events. For 2991/2991 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3922 event pairs, 108 based on Foata normal form. 16/807 useless extension candidates. Maximal degree in co-relation 3091. Up to 465 conditions per place. [2023-11-29 06:31:08,200 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 63 selfloop transitions, 42 changer transitions 0/107 dead transitions. [2023-11-29 06:31:08,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 107 transitions, 1356 flow [2023-11-29 06:31:08,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 06:31:08,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 06:31:08,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 78 transitions. [2023-11-29 06:31:08,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4727272727272727 [2023-11-29 06:31:08,201 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 78 transitions. [2023-11-29 06:31:08,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 78 transitions. [2023-11-29 06:31:08,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:31:08,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 78 transitions. [2023-11-29 06:31:08,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:08,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:08,203 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:08,203 INFO L175 Difference]: Start difference. First operand has 85 places, 91 transitions, 1039 flow. Second operand 5 states and 78 transitions. [2023-11-29 06:31:08,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 107 transitions, 1356 flow [2023-11-29 06:31:08,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 107 transitions, 1268 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-29 06:31:08,215 INFO L231 Difference]: Finished difference. Result has 80 places, 87 transitions, 1034 flow [2023-11-29 06:31:08,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=836, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1034, PETRI_PLACES=80, PETRI_TRANSITIONS=87} [2023-11-29 06:31:08,215 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 46 predicate places. [2023-11-29 06:31:08,215 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 87 transitions, 1034 flow [2023-11-29 06:31:08,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:08,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:31:08,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:31:08,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-29 06:31:08,216 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-29 06:31:08,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:31:08,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1909894865, now seen corresponding path program 3 times [2023-11-29 06:31:08,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:31:08,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423267838] [2023-11-29 06:31:08,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:31:08,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:31:08,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:31:08,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:31:08,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:31:08,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423267838] [2023-11-29 06:31:08,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423267838] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:31:08,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:31:08,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 06:31:08,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394766481] [2023-11-29 06:31:08,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:31:08,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:31:08,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:31:08,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:31:08,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:31:08,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2023-11-29 06:31:08,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 87 transitions, 1034 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:08,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:31:08,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2023-11-29 06:31:08,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:31:08,510 INFO L124 PetriNetUnfolderBase]: 464/877 cut-off events. [2023-11-29 06:31:08,511 INFO L125 PetriNetUnfolderBase]: For 3024/3028 co-relation queries the response was YES. [2023-11-29 06:31:08,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3748 conditions, 877 events. 464/877 cut-off events. For 3024/3028 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4594 event pairs, 73 based on Foata normal form. 8/885 useless extension candidates. Maximal degree in co-relation 3398. Up to 399 conditions per place. [2023-11-29 06:31:08,518 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 65 selfloop transitions, 53 changer transitions 3/123 dead transitions. [2023-11-29 06:31:08,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 123 transitions, 1490 flow [2023-11-29 06:31:08,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 06:31:08,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 06:31:08,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2023-11-29 06:31:08,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5151515151515151 [2023-11-29 06:31:08,520 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 136 transitions. [2023-11-29 06:31:08,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 136 transitions. [2023-11-29 06:31:08,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:31:08,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 136 transitions. [2023-11-29 06:31:08,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:08,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 33.0) internal successors, (297), 9 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:08,522 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 33.0) internal successors, (297), 9 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:08,522 INFO L175 Difference]: Start difference. First operand has 80 places, 87 transitions, 1034 flow. Second operand 8 states and 136 transitions. [2023-11-29 06:31:08,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 123 transitions, 1490 flow [2023-11-29 06:31:08,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 123 transitions, 1455 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 06:31:08,534 INFO L231 Difference]: Finished difference. Result has 88 places, 89 transitions, 1136 flow [2023-11-29 06:31:08,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=999, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1136, PETRI_PLACES=88, PETRI_TRANSITIONS=89} [2023-11-29 06:31:08,535 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 54 predicate places. [2023-11-29 06:31:08,535 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 89 transitions, 1136 flow [2023-11-29 06:31:08,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:08,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:31:08,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:31:08,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-29 06:31:08,535 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-29 06:31:08,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:31:08,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1637577778, now seen corresponding path program 1 times [2023-11-29 06:31:08,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:31:08,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213251321] [2023-11-29 06:31:08,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:31:08,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:31:08,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:31:08,577 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:31:08,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:31:08,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213251321] [2023-11-29 06:31:08,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213251321] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:31:08,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:31:08,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 06:31:08,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638219088] [2023-11-29 06:31:08,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:31:08,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:31:08,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:31:08,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:31:08,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:31:08,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2023-11-29 06:31:08,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 89 transitions, 1136 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:08,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:31:08,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2023-11-29 06:31:08,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:31:08,838 INFO L124 PetriNetUnfolderBase]: 530/1023 cut-off events. [2023-11-29 06:31:08,838 INFO L125 PetriNetUnfolderBase]: For 4448/4448 co-relation queries the response was YES. [2023-11-29 06:31:08,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4471 conditions, 1023 events. 530/1023 cut-off events. For 4448/4448 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 5596 event pairs, 58 based on Foata normal form. 16/1039 useless extension candidates. Maximal degree in co-relation 4232. Up to 331 conditions per place. [2023-11-29 06:31:08,846 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 109 selfloop transitions, 55 changer transitions 0/166 dead transitions. [2023-11-29 06:31:08,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 166 transitions, 2020 flow [2023-11-29 06:31:08,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 06:31:08,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 06:31:08,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2023-11-29 06:31:08,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5117845117845118 [2023-11-29 06:31:08,848 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 152 transitions. [2023-11-29 06:31:08,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 152 transitions. [2023-11-29 06:31:08,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:31:08,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 152 transitions. [2023-11-29 06:31:08,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 16.88888888888889) internal successors, (152), 9 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:08,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 33.0) internal successors, (330), 10 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:08,850 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 33.0) internal successors, (330), 10 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:08,850 INFO L175 Difference]: Start difference. First operand has 88 places, 89 transitions, 1136 flow. Second operand 9 states and 152 transitions. [2023-11-29 06:31:08,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 166 transitions, 2020 flow [2023-11-29 06:31:08,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 166 transitions, 1871 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-11-29 06:31:08,867 INFO L231 Difference]: Finished difference. Result has 96 places, 125 transitions, 1549 flow [2023-11-29 06:31:08,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1037, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1549, PETRI_PLACES=96, PETRI_TRANSITIONS=125} [2023-11-29 06:31:08,867 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 62 predicate places. [2023-11-29 06:31:08,867 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 125 transitions, 1549 flow [2023-11-29 06:31:08,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:08,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:31:08,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:31:08,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-29 06:31:08,868 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-29 06:31:08,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:31:08,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1153581674, now seen corresponding path program 2 times [2023-11-29 06:31:08,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:31:08,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930252903] [2023-11-29 06:31:08,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:31:08,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:31:08,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:31:08,908 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:31:08,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:31:08,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930252903] [2023-11-29 06:31:08,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930252903] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:31:08,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:31:08,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 06:31:08,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789978134] [2023-11-29 06:31:08,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:31:08,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:31:08,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:31:08,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:31:08,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:31:08,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2023-11-29 06:31:08,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 125 transitions, 1549 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:08,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:31:08,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2023-11-29 06:31:08,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:31:09,206 INFO L124 PetriNetUnfolderBase]: 551/1070 cut-off events. [2023-11-29 06:31:09,206 INFO L125 PetriNetUnfolderBase]: For 6088/6088 co-relation queries the response was YES. [2023-11-29 06:31:09,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5153 conditions, 1070 events. 551/1070 cut-off events. For 6088/6088 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 6012 event pairs, 77 based on Foata normal form. 6/1076 useless extension candidates. Maximal degree in co-relation 4792. Up to 241 conditions per place. [2023-11-29 06:31:09,215 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 135 selfloop transitions, 48 changer transitions 5/190 dead transitions. [2023-11-29 06:31:09,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 190 transitions, 2448 flow [2023-11-29 06:31:09,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 06:31:09,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 06:31:09,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2023-11-29 06:31:09,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5568181818181818 [2023-11-29 06:31:09,217 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 147 transitions. [2023-11-29 06:31:09,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 147 transitions. [2023-11-29 06:31:09,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:31:09,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 147 transitions. [2023-11-29 06:31:09,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 18.375) internal successors, (147), 8 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:09,219 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 33.0) internal successors, (297), 9 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:09,219 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 33.0) internal successors, (297), 9 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:09,219 INFO L175 Difference]: Start difference. First operand has 96 places, 125 transitions, 1549 flow. Second operand 8 states and 147 transitions. [2023-11-29 06:31:09,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 190 transitions, 2448 flow [2023-11-29 06:31:09,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 190 transitions, 2401 flow, removed 17 selfloop flow, removed 1 redundant places. [2023-11-29 06:31:09,244 INFO L231 Difference]: Finished difference. Result has 107 places, 140 transitions, 1842 flow [2023-11-29 06:31:09,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1516, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1842, PETRI_PLACES=107, PETRI_TRANSITIONS=140} [2023-11-29 06:31:09,245 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 73 predicate places. [2023-11-29 06:31:09,245 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 140 transitions, 1842 flow [2023-11-29 06:31:09,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:09,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:31:09,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:31:09,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-29 06:31:09,246 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-29 06:31:09,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:31:09,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1785641925, now seen corresponding path program 1 times [2023-11-29 06:31:09,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:31:09,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437945516] [2023-11-29 06:31:09,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:31:09,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:31:09,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:31:09,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:31:09,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:31:09,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437945516] [2023-11-29 06:31:09,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437945516] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:31:09,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:31:09,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 06:31:09,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110064806] [2023-11-29 06:31:09,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:31:09,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:31:09,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:31:09,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:31:09,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:31:09,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2023-11-29 06:31:09,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 140 transitions, 1842 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:09,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:31:09,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2023-11-29 06:31:09,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:31:09,614 INFO L124 PetriNetUnfolderBase]: 627/1218 cut-off events. [2023-11-29 06:31:09,614 INFO L125 PetriNetUnfolderBase]: For 8275/8275 co-relation queries the response was YES. [2023-11-29 06:31:09,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6170 conditions, 1218 events. 627/1218 cut-off events. For 8275/8275 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 6804 event pairs, 60 based on Foata normal form. 14/1232 useless extension candidates. Maximal degree in co-relation 5784. Up to 344 conditions per place. [2023-11-29 06:31:09,626 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 133 selfloop transitions, 93 changer transitions 3/231 dead transitions. [2023-11-29 06:31:09,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 231 transitions, 3185 flow [2023-11-29 06:31:09,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 06:31:09,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 06:31:09,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2023-11-29 06:31:09,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4983164983164983 [2023-11-29 06:31:09,627 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 148 transitions. [2023-11-29 06:31:09,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 148 transitions. [2023-11-29 06:31:09,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:31:09,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 148 transitions. [2023-11-29 06:31:09,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 16.444444444444443) internal successors, (148), 9 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:09,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 33.0) internal successors, (330), 10 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:09,629 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 33.0) internal successors, (330), 10 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:09,629 INFO L175 Difference]: Start difference. First operand has 107 places, 140 transitions, 1842 flow. Second operand 9 states and 148 transitions. [2023-11-29 06:31:09,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 231 transitions, 3185 flow [2023-11-29 06:31:09,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 231 transitions, 3078 flow, removed 23 selfloop flow, removed 2 redundant places. [2023-11-29 06:31:09,663 INFO L231 Difference]: Finished difference. Result has 118 places, 185 transitions, 2659 flow [2023-11-29 06:31:09,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1781, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2659, PETRI_PLACES=118, PETRI_TRANSITIONS=185} [2023-11-29 06:31:09,664 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 84 predicate places. [2023-11-29 06:31:09,664 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 185 transitions, 2659 flow [2023-11-29 06:31:09,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:09,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:31:09,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:31:09,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-29 06:31:09,665 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-29 06:31:09,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:31:09,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1141872463, now seen corresponding path program 2 times [2023-11-29 06:31:09,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:31:09,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576944796] [2023-11-29 06:31:09,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:31:09,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:31:09,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:31:09,703 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:31:09,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:31:09,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576944796] [2023-11-29 06:31:09,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576944796] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:31:09,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:31:09,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 06:31:09,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242441637] [2023-11-29 06:31:09,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:31:09,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:31:09,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:31:09,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:31:09,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:31:09,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2023-11-29 06:31:09,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 185 transitions, 2659 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:09,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:31:09,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2023-11-29 06:31:09,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:31:10,010 INFO L124 PetriNetUnfolderBase]: 624/1197 cut-off events. [2023-11-29 06:31:10,010 INFO L125 PetriNetUnfolderBase]: For 10601/10605 co-relation queries the response was YES. [2023-11-29 06:31:10,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6674 conditions, 1197 events. 624/1197 cut-off events. For 10601/10605 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 6644 event pairs, 92 based on Foata normal form. 18/1215 useless extension candidates. Maximal degree in co-relation 6506. Up to 288 conditions per place. [2023-11-29 06:31:10,022 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 175 selfloop transitions, 42 changer transitions 10/229 dead transitions. [2023-11-29 06:31:10,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 229 transitions, 3485 flow [2023-11-29 06:31:10,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:31:10,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 06:31:10,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 124 transitions. [2023-11-29 06:31:10,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5367965367965368 [2023-11-29 06:31:10,023 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 124 transitions. [2023-11-29 06:31:10,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 124 transitions. [2023-11-29 06:31:10,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:31:10,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 124 transitions. [2023-11-29 06:31:10,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:10,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 33.0) internal successors, (264), 8 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:10,025 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 33.0) internal successors, (264), 8 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:10,025 INFO L175 Difference]: Start difference. First operand has 118 places, 185 transitions, 2659 flow. Second operand 7 states and 124 transitions. [2023-11-29 06:31:10,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 229 transitions, 3485 flow [2023-11-29 06:31:10,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 229 transitions, 3395 flow, removed 32 selfloop flow, removed 3 redundant places. [2023-11-29 06:31:10,061 INFO L231 Difference]: Finished difference. Result has 122 places, 188 transitions, 2700 flow [2023-11-29 06:31:10,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2561, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2700, PETRI_PLACES=122, PETRI_TRANSITIONS=188} [2023-11-29 06:31:10,061 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 88 predicate places. [2023-11-29 06:31:10,061 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 188 transitions, 2700 flow [2023-11-29 06:31:10,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:10,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:31:10,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:31:10,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-29 06:31:10,062 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-29 06:31:10,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:31:10,062 INFO L85 PathProgramCache]: Analyzing trace with hash 681458567, now seen corresponding path program 3 times [2023-11-29 06:31:10,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:31:10,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381581267] [2023-11-29 06:31:10,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:31:10,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:31:10,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:31:10,102 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:31:10,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:31:10,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381581267] [2023-11-29 06:31:10,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381581267] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:31:10,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:31:10,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 06:31:10,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79138204] [2023-11-29 06:31:10,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:31:10,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:31:10,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:31:10,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:31:10,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:31:10,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2023-11-29 06:31:10,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 188 transitions, 2700 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:10,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:31:10,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2023-11-29 06:31:10,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:31:10,462 INFO L124 PetriNetUnfolderBase]: 667/1304 cut-off events. [2023-11-29 06:31:10,462 INFO L125 PetriNetUnfolderBase]: For 11566/11566 co-relation queries the response was YES. [2023-11-29 06:31:10,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7281 conditions, 1304 events. 667/1304 cut-off events. For 11566/11566 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 7562 event pairs, 168 based on Foata normal form. 12/1312 useless extension candidates. Maximal degree in co-relation 6992. Up to 520 conditions per place. [2023-11-29 06:31:10,474 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 183 selfloop transitions, 79 changer transitions 1/265 dead transitions. [2023-11-29 06:31:10,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 265 transitions, 4011 flow [2023-11-29 06:31:10,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 06:31:10,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 06:31:10,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2023-11-29 06:31:10,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5871212121212122 [2023-11-29 06:31:10,476 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 155 transitions. [2023-11-29 06:31:10,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 155 transitions. [2023-11-29 06:31:10,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:31:10,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 155 transitions. [2023-11-29 06:31:10,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:10,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 33.0) internal successors, (297), 9 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:10,478 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 33.0) internal successors, (297), 9 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:10,478 INFO L175 Difference]: Start difference. First operand has 122 places, 188 transitions, 2700 flow. Second operand 8 states and 155 transitions. [2023-11-29 06:31:10,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 265 transitions, 4011 flow [2023-11-29 06:31:10,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 265 transitions, 3945 flow, removed 30 selfloop flow, removed 2 redundant places. [2023-11-29 06:31:10,525 INFO L231 Difference]: Finished difference. Result has 131 places, 209 transitions, 3249 flow [2023-11-29 06:31:10,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2666, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3249, PETRI_PLACES=131, PETRI_TRANSITIONS=209} [2023-11-29 06:31:10,526 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 97 predicate places. [2023-11-29 06:31:10,526 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 209 transitions, 3249 flow [2023-11-29 06:31:10,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:10,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:31:10,527 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:31:10,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-29 06:31:10,527 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-29 06:31:10,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:31:10,527 INFO L85 PathProgramCache]: Analyzing trace with hash -815903684, now seen corresponding path program 3 times [2023-11-29 06:31:10,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:31:10,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97096204] [2023-11-29 06:31:10,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:31:10,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:31:10,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:31:10,565 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:31:10,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:31:10,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97096204] [2023-11-29 06:31:10,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97096204] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:31:10,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:31:10,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 06:31:10,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064358674] [2023-11-29 06:31:10,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:31:10,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:31:10,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:31:10,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:31:10,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:31:10,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2023-11-29 06:31:10,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 209 transitions, 3249 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:10,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:31:10,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2023-11-29 06:31:10,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:31:10,902 INFO L124 PetriNetUnfolderBase]: 684/1343 cut-off events. [2023-11-29 06:31:10,902 INFO L125 PetriNetUnfolderBase]: For 13339/13339 co-relation queries the response was YES. [2023-11-29 06:31:10,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7791 conditions, 1343 events. 684/1343 cut-off events. For 13339/13339 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 7902 event pairs, 157 based on Foata normal form. 14/1357 useless extension candidates. Maximal degree in co-relation 7394. Up to 497 conditions per place. [2023-11-29 06:31:10,913 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 161 selfloop transitions, 94 changer transitions 1/258 dead transitions. [2023-11-29 06:31:10,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 258 transitions, 4121 flow [2023-11-29 06:31:10,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 06:31:10,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 06:31:10,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2023-11-29 06:31:10,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5681818181818182 [2023-11-29 06:31:10,915 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 150 transitions. [2023-11-29 06:31:10,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 150 transitions. [2023-11-29 06:31:10,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:31:10,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 150 transitions. [2023-11-29 06:31:10,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 18.75) internal successors, (150), 8 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:10,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 33.0) internal successors, (297), 9 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:10,917 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 33.0) internal successors, (297), 9 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:10,917 INFO L175 Difference]: Start difference. First operand has 131 places, 209 transitions, 3249 flow. Second operand 8 states and 150 transitions. [2023-11-29 06:31:10,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 258 transitions, 4121 flow [2023-11-29 06:31:10,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 258 transitions, 3968 flow, removed 27 selfloop flow, removed 2 redundant places. [2023-11-29 06:31:10,972 INFO L231 Difference]: Finished difference. Result has 140 places, 217 transitions, 3573 flow [2023-11-29 06:31:10,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3047, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3573, PETRI_PLACES=140, PETRI_TRANSITIONS=217} [2023-11-29 06:31:10,973 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 106 predicate places. [2023-11-29 06:31:10,973 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 217 transitions, 3573 flow [2023-11-29 06:31:10,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:10,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:31:10,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:31:10,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-29 06:31:10,974 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-29 06:31:10,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:31:10,975 INFO L85 PathProgramCache]: Analyzing trace with hash 306393109, now seen corresponding path program 4 times [2023-11-29 06:31:10,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:31:10,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354479550] [2023-11-29 06:31:10,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:31:10,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:31:10,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:31:11,012 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:31:11,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:31:11,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354479550] [2023-11-29 06:31:11,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354479550] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:31:11,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:31:11,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 06:31:11,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093280203] [2023-11-29 06:31:11,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:31:11,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:31:11,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:31:11,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:31:11,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:31:11,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2023-11-29 06:31:11,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 217 transitions, 3573 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:11,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:31:11,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2023-11-29 06:31:11,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:31:11,356 INFO L124 PetriNetUnfolderBase]: 628/1231 cut-off events. [2023-11-29 06:31:11,356 INFO L125 PetriNetUnfolderBase]: For 14308/14308 co-relation queries the response was YES. [2023-11-29 06:31:11,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7508 conditions, 1231 events. 628/1231 cut-off events. For 14308/14308 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 7085 event pairs, 98 based on Foata normal form. 8/1239 useless extension candidates. Maximal degree in co-relation 7364. Up to 324 conditions per place. [2023-11-29 06:31:11,365 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 178 selfloop transitions, 65 changer transitions 5/250 dead transitions. [2023-11-29 06:31:11,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 250 transitions, 4254 flow [2023-11-29 06:31:11,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 06:31:11,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 06:31:11,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2023-11-29 06:31:11,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5265151515151515 [2023-11-29 06:31:11,367 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 139 transitions. [2023-11-29 06:31:11,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 139 transitions. [2023-11-29 06:31:11,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:31:11,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 139 transitions. [2023-11-29 06:31:11,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 17.375) internal successors, (139), 8 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:11,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 33.0) internal successors, (297), 9 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:11,368 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 33.0) internal successors, (297), 9 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:11,369 INFO L175 Difference]: Start difference. First operand has 140 places, 217 transitions, 3573 flow. Second operand 8 states and 139 transitions. [2023-11-29 06:31:11,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 250 transitions, 4254 flow [2023-11-29 06:31:11,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 250 transitions, 4232 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-11-29 06:31:11,439 INFO L231 Difference]: Finished difference. Result has 149 places, 214 transitions, 3707 flow [2023-11-29 06:31:11,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3435, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3707, PETRI_PLACES=149, PETRI_TRANSITIONS=214} [2023-11-29 06:31:11,440 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 115 predicate places. [2023-11-29 06:31:11,440 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 214 transitions, 3707 flow [2023-11-29 06:31:11,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:11,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:31:11,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:31:11,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-11-29 06:31:11,441 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-29 06:31:11,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:31:11,442 INFO L85 PathProgramCache]: Analyzing trace with hash 283251453, now seen corresponding path program 5 times [2023-11-29 06:31:11,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:31:11,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432366804] [2023-11-29 06:31:11,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:31:11,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:31:11,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:31:11,481 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:31:11,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:31:11,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432366804] [2023-11-29 06:31:11,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432366804] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:31:11,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:31:11,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 06:31:11,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048312428] [2023-11-29 06:31:11,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:31:11,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:31:11,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:31:11,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:31:11,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:31:11,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2023-11-29 06:31:11,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 214 transitions, 3707 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:11,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:31:11,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2023-11-29 06:31:11,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:31:11,851 INFO L124 PetriNetUnfolderBase]: 585/1162 cut-off events. [2023-11-29 06:31:11,851 INFO L125 PetriNetUnfolderBase]: For 15887/15887 co-relation queries the response was YES. [2023-11-29 06:31:11,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7361 conditions, 1162 events. 585/1162 cut-off events. For 15887/15887 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 6631 event pairs, 106 based on Foata normal form. 12/1174 useless extension candidates. Maximal degree in co-relation 7030. Up to 354 conditions per place. [2023-11-29 06:31:11,862 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 156 selfloop transitions, 98 changer transitions 3/259 dead transitions. [2023-11-29 06:31:11,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 259 transitions, 4507 flow [2023-11-29 06:31:11,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 06:31:11,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 06:31:11,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2023-11-29 06:31:11,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6022727272727273 [2023-11-29 06:31:11,864 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 159 transitions. [2023-11-29 06:31:11,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 159 transitions. [2023-11-29 06:31:11,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:31:11,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 159 transitions. [2023-11-29 06:31:11,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:11,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 33.0) internal successors, (297), 9 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:11,866 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 33.0) internal successors, (297), 9 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:11,866 INFO L175 Difference]: Start difference. First operand has 149 places, 214 transitions, 3707 flow. Second operand 8 states and 159 transitions. [2023-11-29 06:31:11,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 259 transitions, 4507 flow [2023-11-29 06:31:11,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 259 transitions, 4418 flow, removed 13 selfloop flow, removed 5 redundant places. [2023-11-29 06:31:11,924 INFO L231 Difference]: Finished difference. Result has 151 places, 208 transitions, 3784 flow [2023-11-29 06:31:11,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3512, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3784, PETRI_PLACES=151, PETRI_TRANSITIONS=208} [2023-11-29 06:31:11,925 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 117 predicate places. [2023-11-29 06:31:11,925 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 208 transitions, 3784 flow [2023-11-29 06:31:11,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:11,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:31:11,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:31:11,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-11-29 06:31:11,926 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-29 06:31:11,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:31:11,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1214110798, now seen corresponding path program 4 times [2023-11-29 06:31:11,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:31:11,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811059263] [2023-11-29 06:31:11,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:31:11,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:31:11,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:31:11,965 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:31:11,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:31:11,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811059263] [2023-11-29 06:31:11,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811059263] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:31:11,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:31:11,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 06:31:11,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963019908] [2023-11-29 06:31:11,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:31:11,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:31:11,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:31:11,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:31:11,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:31:11,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2023-11-29 06:31:11,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 208 transitions, 3784 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:11,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:31:11,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2023-11-29 06:31:11,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:31:12,360 INFO L124 PetriNetUnfolderBase]: 538/1088 cut-off events. [2023-11-29 06:31:12,360 INFO L125 PetriNetUnfolderBase]: For 16848/16848 co-relation queries the response was YES. [2023-11-29 06:31:12,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7102 conditions, 1088 events. 538/1088 cut-off events. For 16848/16848 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 6196 event pairs, 135 based on Foata normal form. 14/1101 useless extension candidates. Maximal degree in co-relation 6811. Up to 515 conditions per place. [2023-11-29 06:31:12,371 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 159 selfloop transitions, 80 changer transitions 1/242 dead transitions. [2023-11-29 06:31:12,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 242 transitions, 4388 flow [2023-11-29 06:31:12,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 06:31:12,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 06:31:12,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2023-11-29 06:31:12,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5757575757575758 [2023-11-29 06:31:12,372 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 152 transitions. [2023-11-29 06:31:12,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 152 transitions. [2023-11-29 06:31:12,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:31:12,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 152 transitions. [2023-11-29 06:31:12,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.0) internal successors, (152), 8 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:12,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 33.0) internal successors, (297), 9 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:12,374 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 33.0) internal successors, (297), 9 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:12,374 INFO L175 Difference]: Start difference. First operand has 151 places, 208 transitions, 3784 flow. Second operand 8 states and 152 transitions. [2023-11-29 06:31:12,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 242 transitions, 4388 flow [2023-11-29 06:31:12,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 242 transitions, 4344 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-11-29 06:31:12,427 INFO L231 Difference]: Finished difference. Result has 155 places, 204 transitions, 3848 flow [2023-11-29 06:31:12,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3560, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3848, PETRI_PLACES=155, PETRI_TRANSITIONS=204} [2023-11-29 06:31:12,428 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 121 predicate places. [2023-11-29 06:31:12,428 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 204 transitions, 3848 flow [2023-11-29 06:31:12,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:12,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:31:12,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:31:12,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-11-29 06:31:12,428 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-29 06:31:12,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:31:12,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1010540826, now seen corresponding path program 5 times [2023-11-29 06:31:12,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:31:12,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860677665] [2023-11-29 06:31:12,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:31:12,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:31:12,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:31:12,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:31:12,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:31:12,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860677665] [2023-11-29 06:31:12,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860677665] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:31:12,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:31:12,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 06:31:12,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075020848] [2023-11-29 06:31:12,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:31:12,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:31:12,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:31:12,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:31:12,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:31:12,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2023-11-29 06:31:12,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 204 transitions, 3848 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:12,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:31:12,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2023-11-29 06:31:12,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:31:12,742 INFO L124 PetriNetUnfolderBase]: 531/1083 cut-off events. [2023-11-29 06:31:12,742 INFO L125 PetriNetUnfolderBase]: For 17867/17871 co-relation queries the response was YES. [2023-11-29 06:31:12,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7246 conditions, 1083 events. 531/1083 cut-off events. For 17867/17871 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 6176 event pairs, 93 based on Foata normal form. 10/1092 useless extension candidates. Maximal degree in co-relation 6815. Up to 308 conditions per place. [2023-11-29 06:31:12,750 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 179 selfloop transitions, 38 changer transitions 6/225 dead transitions. [2023-11-29 06:31:12,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 225 transitions, 4393 flow [2023-11-29 06:31:12,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:31:12,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 06:31:12,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 118 transitions. [2023-11-29 06:31:12,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5108225108225108 [2023-11-29 06:31:12,751 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 118 transitions. [2023-11-29 06:31:12,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 118 transitions. [2023-11-29 06:31:12,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:31:12,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 118 transitions. [2023-11-29 06:31:12,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:12,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 33.0) internal successors, (264), 8 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:12,752 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 33.0) internal successors, (264), 8 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:12,753 INFO L175 Difference]: Start difference. First operand has 155 places, 204 transitions, 3848 flow. Second operand 7 states and 118 transitions. [2023-11-29 06:31:12,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 225 transitions, 4393 flow [2023-11-29 06:31:12,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 225 transitions, 4292 flow, removed 10 selfloop flow, removed 3 redundant places. [2023-11-29 06:31:12,820 INFO L231 Difference]: Finished difference. Result has 159 places, 199 transitions, 3709 flow [2023-11-29 06:31:12,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3721, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3709, PETRI_PLACES=159, PETRI_TRANSITIONS=199} [2023-11-29 06:31:12,821 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 125 predicate places. [2023-11-29 06:31:12,821 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 199 transitions, 3709 flow [2023-11-29 06:31:12,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:12,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:31:12,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:31:12,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-11-29 06:31:12,822 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-29 06:31:12,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:31:12,822 INFO L85 PathProgramCache]: Analyzing trace with hash 755374560, now seen corresponding path program 6 times [2023-11-29 06:31:12,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:31:12,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546326316] [2023-11-29 06:31:12,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:31:12,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:31:12,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:31:12,857 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:31:12,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:31:12,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546326316] [2023-11-29 06:31:12,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546326316] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:31:12,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:31:12,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 06:31:12,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932894029] [2023-11-29 06:31:12,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:31:12,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:31:12,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:31:12,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:31:12,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:31:12,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2023-11-29 06:31:12,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 199 transitions, 3709 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:12,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:31:12,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2023-11-29 06:31:12,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:31:13,114 INFO L124 PetriNetUnfolderBase]: 468/935 cut-off events. [2023-11-29 06:31:13,114 INFO L125 PetriNetUnfolderBase]: For 15930/15934 co-relation queries the response was YES. [2023-11-29 06:31:13,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6312 conditions, 935 events. 468/935 cut-off events. For 15930/15934 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 5043 event pairs, 85 based on Foata normal form. 10/944 useless extension candidates. Maximal degree in co-relation 6268. Up to 293 conditions per place. [2023-11-29 06:31:13,121 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 148 selfloop transitions, 53 changer transitions 3/206 dead transitions. [2023-11-29 06:31:13,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 206 transitions, 3915 flow [2023-11-29 06:31:13,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 06:31:13,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 06:31:13,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 131 transitions. [2023-11-29 06:31:13,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4962121212121212 [2023-11-29 06:31:13,122 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 131 transitions. [2023-11-29 06:31:13,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 131 transitions. [2023-11-29 06:31:13,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:31:13,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 131 transitions. [2023-11-29 06:31:13,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 16.375) internal successors, (131), 8 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:13,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 33.0) internal successors, (297), 9 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:13,124 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 33.0) internal successors, (297), 9 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:13,124 INFO L175 Difference]: Start difference. First operand has 159 places, 199 transitions, 3709 flow. Second operand 8 states and 131 transitions. [2023-11-29 06:31:13,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 206 transitions, 3915 flow [2023-11-29 06:31:13,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 206 transitions, 3749 flow, removed 10 selfloop flow, removed 7 redundant places. [2023-11-29 06:31:13,163 INFO L231 Difference]: Finished difference. Result has 157 places, 182 transitions, 3316 flow [2023-11-29 06:31:13,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3250, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3316, PETRI_PLACES=157, PETRI_TRANSITIONS=182} [2023-11-29 06:31:13,163 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 123 predicate places. [2023-11-29 06:31:13,163 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 182 transitions, 3316 flow [2023-11-29 06:31:13,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:13,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:31:13,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:31:13,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-11-29 06:31:13,164 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-29 06:31:13,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:31:13,164 INFO L85 PathProgramCache]: Analyzing trace with hash -91814005, now seen corresponding path program 6 times [2023-11-29 06:31:13,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:31:13,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143428598] [2023-11-29 06:31:13,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:31:13,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:31:13,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:31:13,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:31:13,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:31:13,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143428598] [2023-11-29 06:31:13,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143428598] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:31:13,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:31:13,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 06:31:13,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652787193] [2023-11-29 06:31:13,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:31:13,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:31:13,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:31:13,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:31:13,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:31:13,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2023-11-29 06:31:13,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 182 transitions, 3316 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:13,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:31:13,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2023-11-29 06:31:13,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:31:13,423 INFO L124 PetriNetUnfolderBase]: 403/811 cut-off events. [2023-11-29 06:31:13,423 INFO L125 PetriNetUnfolderBase]: For 13400/13400 co-relation queries the response was YES. [2023-11-29 06:31:13,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5465 conditions, 811 events. 403/811 cut-off events. For 13400/13400 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4192 event pairs, 66 based on Foata normal form. 8/818 useless extension candidates. Maximal degree in co-relation 5427. Up to 246 conditions per place. [2023-11-29 06:31:13,428 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 124 selfloop transitions, 52 changer transitions 6/184 dead transitions. [2023-11-29 06:31:13,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 184 transitions, 3445 flow [2023-11-29 06:31:13,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:31:13,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 06:31:13,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 113 transitions. [2023-11-29 06:31:13,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48917748917748916 [2023-11-29 06:31:13,430 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 113 transitions. [2023-11-29 06:31:13,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 113 transitions. [2023-11-29 06:31:13,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:31:13,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 113 transitions. [2023-11-29 06:31:13,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:13,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 33.0) internal successors, (264), 8 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:13,431 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 33.0) internal successors, (264), 8 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:13,431 INFO L175 Difference]: Start difference. First operand has 157 places, 182 transitions, 3316 flow. Second operand 7 states and 113 transitions. [2023-11-29 06:31:13,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 184 transitions, 3445 flow [2023-11-29 06:31:13,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 184 transitions, 3289 flow, removed 11 selfloop flow, removed 9 redundant places. [2023-11-29 06:31:13,464 INFO L231 Difference]: Finished difference. Result has 149 places, 165 transitions, 2924 flow [2023-11-29 06:31:13,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2859, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2924, PETRI_PLACES=149, PETRI_TRANSITIONS=165} [2023-11-29 06:31:13,464 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 115 predicate places. [2023-11-29 06:31:13,464 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 165 transitions, 2924 flow [2023-11-29 06:31:13,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:13,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:31:13,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:31:13,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-11-29 06:31:13,465 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-29 06:31:13,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:31:13,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1809408146, now seen corresponding path program 1 times [2023-11-29 06:31:13,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:31:13,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185048184] [2023-11-29 06:31:13,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:31:13,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:31:13,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:31:13,567 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:31:13,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:31:13,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185048184] [2023-11-29 06:31:13,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185048184] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:31:13,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710743501] [2023-11-29 06:31:13,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:31:13,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:31:13,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:31:13,570 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:31:13,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 06:31:13,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:31:13,650 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 06:31:13,655 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:31:13,863 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:31:13,863 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:31:14,022 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:31:14,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [710743501] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:31:14,022 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:31:14,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2023-11-29 06:31:14,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015558085] [2023-11-29 06:31:14,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:31:14,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 06:31:14,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:31:14,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 06:31:14,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=557, Unknown=0, NotChecked=0, Total=650 [2023-11-29 06:31:14,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2023-11-29 06:31:14,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 165 transitions, 2924 flow. Second operand has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:14,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:31:14,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2023-11-29 06:31:14,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:31:16,814 INFO L124 PetriNetUnfolderBase]: 1091/2156 cut-off events. [2023-11-29 06:31:16,814 INFO L125 PetriNetUnfolderBase]: For 28853/28853 co-relation queries the response was YES. [2023-11-29 06:31:16,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13827 conditions, 2156 events. 1091/2156 cut-off events. For 28853/28853 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 13827 event pairs, 76 based on Foata normal form. 54/2210 useless extension candidates. Maximal degree in co-relation 13792. Up to 375 conditions per place. [2023-11-29 06:31:16,827 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 214 selfloop transitions, 348 changer transitions 10/574 dead transitions. [2023-11-29 06:31:16,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 574 transitions, 9245 flow [2023-11-29 06:31:16,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2023-11-29 06:31:16,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2023-11-29 06:31:16,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 681 transitions. [2023-11-29 06:31:16,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2715311004784689 [2023-11-29 06:31:16,830 INFO L72 ComplementDD]: Start complementDD. Operand 76 states and 681 transitions. [2023-11-29 06:31:16,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 76 states and 681 transitions. [2023-11-29 06:31:16,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:31:16,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 76 states and 681 transitions. [2023-11-29 06:31:16,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 77 states, 76 states have (on average 8.960526315789474) internal successors, (681), 76 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:16,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 77 states, 77 states have (on average 33.0) internal successors, (2541), 77 states have internal predecessors, (2541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:16,836 INFO L81 ComplementDD]: Finished complementDD. Result has 77 states, 77 states have (on average 33.0) internal successors, (2541), 77 states have internal predecessors, (2541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:16,836 INFO L175 Difference]: Start difference. First operand has 149 places, 165 transitions, 2924 flow. Second operand 76 states and 681 transitions. [2023-11-29 06:31:16,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 574 transitions, 9245 flow [2023-11-29 06:31:16,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 574 transitions, 8737 flow, removed 13 selfloop flow, removed 12 redundant places. [2023-11-29 06:31:16,904 INFO L231 Difference]: Finished difference. Result has 218 places, 401 transitions, 7568 flow [2023-11-29 06:31:16,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2688, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=76, PETRI_FLOW=7568, PETRI_PLACES=218, PETRI_TRANSITIONS=401} [2023-11-29 06:31:16,905 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 184 predicate places. [2023-11-29 06:31:16,905 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 401 transitions, 7568 flow [2023-11-29 06:31:16,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:16,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:31:16,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:31:16,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 06:31:17,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:31:17,106 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-29 06:31:17,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:31:17,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1358639504, now seen corresponding path program 1 times [2023-11-29 06:31:17,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:31:17,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901205557] [2023-11-29 06:31:17,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:31:17,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:31:17,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:31:17,215 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:31:17,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:31:17,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901205557] [2023-11-29 06:31:17,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901205557] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:31:17,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435374011] [2023-11-29 06:31:17,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:31:17,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:31:17,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:31:17,217 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:31:17,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 06:31:17,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:31:17,286 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 06:31:17,287 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:31:17,447 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:31:17,447 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:31:17,578 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:31:17,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1435374011] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:31:17,579 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:31:17,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2023-11-29 06:31:17,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939640922] [2023-11-29 06:31:17,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:31:17,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 06:31:17,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:31:17,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 06:31:17,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=548, Unknown=0, NotChecked=0, Total=650 [2023-11-29 06:31:17,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2023-11-29 06:31:17,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 401 transitions, 7568 flow. Second operand has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:17,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:31:17,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2023-11-29 06:31:17,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:31:19,705 INFO L124 PetriNetUnfolderBase]: 1201/2370 cut-off events. [2023-11-29 06:31:19,705 INFO L125 PetriNetUnfolderBase]: For 31485/31485 co-relation queries the response was YES. [2023-11-29 06:31:19,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15772 conditions, 2370 events. 1201/2370 cut-off events. For 31485/31485 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 15234 event pairs, 83 based on Foata normal form. 40/2410 useless extension candidates. Maximal degree in co-relation 15729. Up to 539 conditions per place. [2023-11-29 06:31:19,721 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 210 selfloop transitions, 320 changer transitions 18/550 dead transitions. [2023-11-29 06:31:19,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 550 transitions, 9774 flow [2023-11-29 06:31:19,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-11-29 06:31:19,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2023-11-29 06:31:19,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 526 transitions. [2023-11-29 06:31:19,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2898071625344353 [2023-11-29 06:31:19,722 INFO L72 ComplementDD]: Start complementDD. Operand 55 states and 526 transitions. [2023-11-29 06:31:19,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 526 transitions. [2023-11-29 06:31:19,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:31:19,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 55 states and 526 transitions. [2023-11-29 06:31:19,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 56 states, 55 states have (on average 9.563636363636364) internal successors, (526), 55 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:19,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 56 states, 56 states have (on average 33.0) internal successors, (1848), 56 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:19,727 INFO L81 ComplementDD]: Finished complementDD. Result has 56 states, 56 states have (on average 33.0) internal successors, (1848), 56 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:19,727 INFO L175 Difference]: Start difference. First operand has 218 places, 401 transitions, 7568 flow. Second operand 55 states and 526 transitions. [2023-11-29 06:31:19,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 550 transitions, 9774 flow [2023-11-29 06:31:19,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 550 transitions, 9255 flow, removed 87 selfloop flow, removed 6 redundant places. [2023-11-29 06:31:19,830 INFO L231 Difference]: Finished difference. Result has 271 places, 411 transitions, 7976 flow [2023-11-29 06:31:19,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=7063, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=300, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=7976, PETRI_PLACES=271, PETRI_TRANSITIONS=411} [2023-11-29 06:31:19,831 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 237 predicate places. [2023-11-29 06:31:19,831 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 411 transitions, 7976 flow [2023-11-29 06:31:19,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:19,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:31:19,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:31:19,836 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 06:31:20,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:31:20,032 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-29 06:31:20,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:31:20,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1742076718, now seen corresponding path program 2 times [2023-11-29 06:31:20,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:31:20,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962920181] [2023-11-29 06:31:20,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:31:20,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:31:20,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:31:20,134 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:31:20,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:31:20,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962920181] [2023-11-29 06:31:20,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962920181] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:31:20,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377130631] [2023-11-29 06:31:20,135 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 06:31:20,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:31:20,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:31:20,136 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:31:20,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 06:31:20,207 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 06:31:20,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:31:20,208 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 06:31:20,209 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:31:20,337 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:31:20,337 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:31:20,463 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:31:20,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377130631] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:31:20,463 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:31:20,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2023-11-29 06:31:20,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791865749] [2023-11-29 06:31:20,464 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:31:20,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 06:31:20,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:31:20,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 06:31:20,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=547, Unknown=0, NotChecked=0, Total=650 [2023-11-29 06:31:20,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2023-11-29 06:31:20,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 411 transitions, 7976 flow. Second operand has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:20,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:31:20,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2023-11-29 06:31:20,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:31:23,453 INFO L124 PetriNetUnfolderBase]: 2701/5200 cut-off events. [2023-11-29 06:31:23,453 INFO L125 PetriNetUnfolderBase]: For 65614/65614 co-relation queries the response was YES. [2023-11-29 06:31:23,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35961 conditions, 5200 events. 2701/5200 cut-off events. For 65614/65614 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 38237 event pairs, 187 based on Foata normal form. 48/5248 useless extension candidates. Maximal degree in co-relation 35912. Up to 1335 conditions per place. [2023-11-29 06:31:23,491 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 250 selfloop transitions, 836 changer transitions 22/1110 dead transitions. [2023-11-29 06:31:23,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 1110 transitions, 21787 flow [2023-11-29 06:31:23,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2023-11-29 06:31:23,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2023-11-29 06:31:23,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 624 transitions. [2023-11-29 06:31:23,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.26632522407170295 [2023-11-29 06:31:23,494 INFO L72 ComplementDD]: Start complementDD. Operand 71 states and 624 transitions. [2023-11-29 06:31:23,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 71 states and 624 transitions. [2023-11-29 06:31:23,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:31:23,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 71 states and 624 transitions. [2023-11-29 06:31:23,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 72 states, 71 states have (on average 8.788732394366198) internal successors, (624), 71 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:23,500 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 72 states, 72 states have (on average 33.0) internal successors, (2376), 72 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:23,500 INFO L81 ComplementDD]: Finished complementDD. Result has 72 states, 72 states have (on average 33.0) internal successors, (2376), 72 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:23,500 INFO L175 Difference]: Start difference. First operand has 271 places, 411 transitions, 7976 flow. Second operand 71 states and 624 transitions. [2023-11-29 06:31:23,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 1110 transitions, 21787 flow [2023-11-29 06:31:23,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 1110 transitions, 21104 flow, removed 26 selfloop flow, removed 26 redundant places. [2023-11-29 06:31:23,835 INFO L231 Difference]: Finished difference. Result has 331 places, 935 transitions, 19599 flow [2023-11-29 06:31:23,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=7658, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=337, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=71, PETRI_FLOW=19599, PETRI_PLACES=331, PETRI_TRANSITIONS=935} [2023-11-29 06:31:23,836 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 297 predicate places. [2023-11-29 06:31:23,836 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 935 transitions, 19599 flow [2023-11-29 06:31:23,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:23,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:31:23,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:31:23,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-29 06:31:24,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-11-29 06:31:24,037 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-29 06:31:24,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:31:24,038 INFO L85 PathProgramCache]: Analyzing trace with hash -881253764, now seen corresponding path program 2 times [2023-11-29 06:31:24,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:31:24,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487651659] [2023-11-29 06:31:24,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:31:24,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:31:24,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:31:24,135 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:31:24,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:31:24,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487651659] [2023-11-29 06:31:24,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487651659] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:31:24,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57866103] [2023-11-29 06:31:24,136 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 06:31:24,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:31:24,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:31:24,137 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:31:24,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 06:31:24,201 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 06:31:24,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:31:24,202 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 06:31:24,203 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:31:24,350 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:31:24,350 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:31:24,437 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:31:24,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57866103] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:31:24,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:31:24,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2023-11-29 06:31:24,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622657188] [2023-11-29 06:31:24,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:31:24,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 06:31:24,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:31:24,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 06:31:24,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=544, Unknown=0, NotChecked=0, Total=650 [2023-11-29 06:31:24,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2023-11-29 06:31:24,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 935 transitions, 19599 flow. Second operand has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:24,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:31:24,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2023-11-29 06:31:24,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:31:28,201 INFO L124 PetriNetUnfolderBase]: 4449/8657 cut-off events. [2023-11-29 06:31:28,202 INFO L125 PetriNetUnfolderBase]: For 129171/129171 co-relation queries the response was YES. [2023-11-29 06:31:28,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63750 conditions, 8657 events. 4449/8657 cut-off events. For 129171/129171 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 70129 event pairs, 310 based on Foata normal form. 126/8783 useless extension candidates. Maximal degree in co-relation 63684. Up to 1743 conditions per place. [2023-11-29 06:31:28,276 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 498 selfloop transitions, 1177 changer transitions 51/1728 dead transitions. [2023-11-29 06:31:28,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 1728 transitions, 37952 flow [2023-11-29 06:31:28,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-11-29 06:31:28,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2023-11-29 06:31:28,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 452 transitions. [2023-11-29 06:31:28,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29142488716956805 [2023-11-29 06:31:28,278 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 452 transitions. [2023-11-29 06:31:28,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 452 transitions. [2023-11-29 06:31:28,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:31:28,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 452 transitions. [2023-11-29 06:31:28,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 9.617021276595745) internal successors, (452), 47 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:28,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 33.0) internal successors, (1584), 48 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:28,281 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 33.0) internal successors, (1584), 48 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:28,282 INFO L175 Difference]: Start difference. First operand has 331 places, 935 transitions, 19599 flow. Second operand 47 states and 452 transitions. [2023-11-29 06:31:28,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 1728 transitions, 37952 flow [2023-11-29 06:31:29,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 1728 transitions, 36708 flow, removed 154 selfloop flow, removed 7 redundant places. [2023-11-29 06:31:29,366 INFO L231 Difference]: Finished difference. Result has 389 places, 1493 transitions, 34202 flow [2023-11-29 06:31:29,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=18818, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=932, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=646, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=34202, PETRI_PLACES=389, PETRI_TRANSITIONS=1493} [2023-11-29 06:31:29,368 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 355 predicate places. [2023-11-29 06:31:29,368 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 1493 transitions, 34202 flow [2023-11-29 06:31:29,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:29,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:31:29,368 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:31:29,373 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 06:31:29,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-11-29 06:31:29,569 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-29 06:31:29,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:31:29,569 INFO L85 PathProgramCache]: Analyzing trace with hash 429062854, now seen corresponding path program 3 times [2023-11-29 06:31:29,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:31:29,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677960347] [2023-11-29 06:31:29,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:31:29,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:31:29,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:31:29,693 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:31:29,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:31:29,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677960347] [2023-11-29 06:31:29,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677960347] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:31:29,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608253697] [2023-11-29 06:31:29,693 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 06:31:29,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:31:29,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:31:29,694 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:31:29,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 06:31:29,754 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-29 06:31:29,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:31:29,755 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 06:31:29,757 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:31:29,902 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:31:29,902 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:31:30,013 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:31:30,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608253697] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:31:30,014 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:31:30,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2023-11-29 06:31:30,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556929931] [2023-11-29 06:31:30,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:31:30,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 06:31:30,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:31:30,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 06:31:30,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=557, Unknown=0, NotChecked=0, Total=650 [2023-11-29 06:31:30,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2023-11-29 06:31:30,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 1493 transitions, 34202 flow. Second operand has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:30,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:31:30,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2023-11-29 06:31:30,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:31:37,337 INFO L124 PetriNetUnfolderBase]: 6525/12875 cut-off events. [2023-11-29 06:31:37,337 INFO L125 PetriNetUnfolderBase]: For 202936/202936 co-relation queries the response was YES. [2023-11-29 06:31:37,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98981 conditions, 12875 events. 6525/12875 cut-off events. For 202936/202936 co-relation queries the response was YES. Maximal size of possible extension queue 748. Compared 111238 event pairs, 700 based on Foata normal form. 60/12935 useless extension candidates. Maximal degree in co-relation 98896. Up to 3459 conditions per place. [2023-11-29 06:31:37,461 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 456 selfloop transitions, 1734 changer transitions 27/2219 dead transitions. [2023-11-29 06:31:37,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 2219 transitions, 52839 flow [2023-11-29 06:31:37,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2023-11-29 06:31:37,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2023-11-29 06:31:37,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 660 transitions. [2023-11-29 06:31:37,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2631578947368421 [2023-11-29 06:31:37,463 INFO L72 ComplementDD]: Start complementDD. Operand 76 states and 660 transitions. [2023-11-29 06:31:37,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 76 states and 660 transitions. [2023-11-29 06:31:37,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:31:37,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 76 states and 660 transitions. [2023-11-29 06:31:37,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 77 states, 76 states have (on average 8.68421052631579) internal successors, (660), 76 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:37,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 77 states, 77 states have (on average 33.0) internal successors, (2541), 77 states have internal predecessors, (2541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:37,468 INFO L81 ComplementDD]: Finished complementDD. Result has 77 states, 77 states have (on average 33.0) internal successors, (2541), 77 states have internal predecessors, (2541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:37,468 INFO L175 Difference]: Start difference. First operand has 389 places, 1493 transitions, 34202 flow. Second operand 76 states and 660 transitions. [2023-11-29 06:31:37,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 2219 transitions, 52839 flow [2023-11-29 06:31:40,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 2219 transitions, 52169 flow, removed 179 selfloop flow, removed 11 redundant places. [2023-11-29 06:31:40,710 INFO L231 Difference]: Finished difference. Result has 463 places, 1996 transitions, 49990 flow [2023-11-29 06:31:40,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=33785, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1243, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=76, PETRI_FLOW=49990, PETRI_PLACES=463, PETRI_TRANSITIONS=1996} [2023-11-29 06:31:40,712 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 429 predicate places. [2023-11-29 06:31:40,712 INFO L495 AbstractCegarLoop]: Abstraction has has 463 places, 1996 transitions, 49990 flow [2023-11-29 06:31:40,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:40,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:31:40,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:31:40,717 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 06:31:40,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-11-29 06:31:40,913 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-29 06:31:40,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:31:40,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1875045342, now seen corresponding path program 3 times [2023-11-29 06:31:40,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:31:40,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757162451] [2023-11-29 06:31:40,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:31:40,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:31:40,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:31:41,031 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:31:41,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:31:41,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757162451] [2023-11-29 06:31:41,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757162451] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:31:41,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312839869] [2023-11-29 06:31:41,033 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 06:31:41,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:31:41,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:31:41,035 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:31:41,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 06:31:41,117 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 06:31:41,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:31:41,118 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 06:31:41,119 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:31:41,272 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:31:41,272 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:31:41,390 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:31:41,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312839869] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:31:41,390 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:31:41,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2023-11-29 06:31:41,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153884279] [2023-11-29 06:31:41,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:31:41,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 06:31:41,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:31:41,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 06:31:41,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=565, Unknown=0, NotChecked=0, Total=650 [2023-11-29 06:31:41,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2023-11-29 06:31:41,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 1996 transitions, 49990 flow. Second operand has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:41,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:31:41,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2023-11-29 06:31:41,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:31:50,338 INFO L124 PetriNetUnfolderBase]: 6725/13344 cut-off events. [2023-11-29 06:31:50,338 INFO L125 PetriNetUnfolderBase]: For 248688/248688 co-relation queries the response was YES. [2023-11-29 06:31:50,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107639 conditions, 13344 events. 6725/13344 cut-off events. For 248688/248688 co-relation queries the response was YES. Maximal size of possible extension queue 796. Compared 116974 event pairs, 516 based on Foata normal form. 234/13578 useless extension candidates. Maximal degree in co-relation 107546. Up to 2346 conditions per place. [2023-11-29 06:31:50,457 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 271 selfloop transitions, 1529 changer transitions 425/2227 dead transitions. [2023-11-29 06:31:50,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 530 places, 2227 transitions, 56909 flow [2023-11-29 06:31:50,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2023-11-29 06:31:50,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2023-11-29 06:31:50,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 587 transitions. [2023-11-29 06:31:50,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.26158645276292336 [2023-11-29 06:31:50,459 INFO L72 ComplementDD]: Start complementDD. Operand 68 states and 587 transitions. [2023-11-29 06:31:50,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 68 states and 587 transitions. [2023-11-29 06:31:50,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:31:50,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 68 states and 587 transitions. [2023-11-29 06:31:50,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 69 states, 68 states have (on average 8.632352941176471) internal successors, (587), 68 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:50,464 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 69 states, 69 states have (on average 33.0) internal successors, (2277), 69 states have internal predecessors, (2277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:50,464 INFO L81 ComplementDD]: Finished complementDD. Result has 69 states, 69 states have (on average 33.0) internal successors, (2277), 69 states have internal predecessors, (2277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:50,464 INFO L175 Difference]: Start difference. First operand has 463 places, 1996 transitions, 49990 flow. Second operand 68 states and 587 transitions. [2023-11-29 06:31:50,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 530 places, 2227 transitions, 56909 flow [2023-11-29 06:31:54,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 513 places, 2227 transitions, 54906 flow, removed 121 selfloop flow, removed 17 redundant places. [2023-11-29 06:31:54,573 INFO L231 Difference]: Finished difference. Result has 519 places, 1677 transitions, 42999 flow [2023-11-29 06:31:54,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=48069, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1996, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1493, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=499, PETRI_DIFFERENCE_SUBTRAHEND_STATES=68, PETRI_FLOW=42999, PETRI_PLACES=519, PETRI_TRANSITIONS=1677} [2023-11-29 06:31:54,575 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 485 predicate places. [2023-11-29 06:31:54,575 INFO L495 AbstractCegarLoop]: Abstraction has has 519 places, 1677 transitions, 42999 flow [2023-11-29 06:31:54,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:54,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:31:54,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:31:54,581 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 06:31:54,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-11-29 06:31:54,777 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-29 06:31:54,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:31:54,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1706130768, now seen corresponding path program 4 times [2023-11-29 06:31:54,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:31:54,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16111370] [2023-11-29 06:31:54,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:31:54,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:31:54,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:31:54,907 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:31:54,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:31:54,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16111370] [2023-11-29 06:31:54,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16111370] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:31:54,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085985667] [2023-11-29 06:31:54,907 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 06:31:54,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:31:54,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:31:54,908 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:31:54,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 06:31:54,965 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 06:31:54,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:31:54,966 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 06:31:54,968 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:31:55,101 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:31:55,101 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:31:55,220 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:31:55,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1085985667] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:31:55,220 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:31:55,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2023-11-29 06:31:55,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611251271] [2023-11-29 06:31:55,220 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:31:55,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 06:31:55,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:31:55,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 06:31:55,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=557, Unknown=0, NotChecked=0, Total=650 [2023-11-29 06:31:55,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2023-11-29 06:31:55,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 1677 transitions, 42999 flow. Second operand has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:31:55,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:31:55,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2023-11-29 06:31:55,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:32:01,507 INFO L124 PetriNetUnfolderBase]: 5077/10002 cut-off events. [2023-11-29 06:32:01,508 INFO L125 PetriNetUnfolderBase]: For 195313/195313 co-relation queries the response was YES. [2023-11-29 06:32:01,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84498 conditions, 10002 events. 5077/10002 cut-off events. For 195313/195313 co-relation queries the response was YES. Maximal size of possible extension queue 590. Compared 82415 event pairs, 436 based on Foata normal form. 18/10020 useless extension candidates. Maximal degree in co-relation 84401. Up to 1822 conditions per place. [2023-11-29 06:32:01,609 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 241 selfloop transitions, 1523 changer transitions 33/1799 dead transitions. [2023-11-29 06:32:01,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 548 places, 1799 transitions, 47346 flow [2023-11-29 06:32:01,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-11-29 06:32:01,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2023-11-29 06:32:01,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 427 transitions. [2023-11-29 06:32:01,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.25371360665478315 [2023-11-29 06:32:01,611 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 427 transitions. [2023-11-29 06:32:01,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 427 transitions. [2023-11-29 06:32:01,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:32:01,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 427 transitions. [2023-11-29 06:32:01,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 8.372549019607844) internal successors, (427), 51 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:32:01,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 33.0) internal successors, (1716), 52 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:32:01,615 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 33.0) internal successors, (1716), 52 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:32:01,615 INFO L175 Difference]: Start difference. First operand has 519 places, 1677 transitions, 42999 flow. Second operand 51 states and 427 transitions. [2023-11-29 06:32:01,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 548 places, 1799 transitions, 47346 flow [2023-11-29 06:32:03,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 495 places, 1799 transitions, 43339 flow, removed 124 selfloop flow, removed 53 redundant places. [2023-11-29 06:32:03,901 INFO L231 Difference]: Finished difference. Result has 500 places, 1671 transitions, 42031 flow [2023-11-29 06:32:03,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=39002, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1677, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1519, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=42031, PETRI_PLACES=500, PETRI_TRANSITIONS=1671} [2023-11-29 06:32:03,902 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 466 predicate places. [2023-11-29 06:32:03,903 INFO L495 AbstractCegarLoop]: Abstraction has has 500 places, 1671 transitions, 42031 flow [2023-11-29 06:32:03,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:32:03,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:32:03,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:32:03,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-29 06:32:04,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:32:04,103 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-29 06:32:04,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:32:04,104 INFO L85 PathProgramCache]: Analyzing trace with hash -17349456, now seen corresponding path program 4 times [2023-11-29 06:32:04,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:32:04,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816987309] [2023-11-29 06:32:04,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:32:04,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:32:04,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:32:04,198 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:32:04,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:32:04,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816987309] [2023-11-29 06:32:04,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816987309] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:32:04,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343454165] [2023-11-29 06:32:04,199 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 06:32:04,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:32:04,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:32:04,200 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:32:04,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 06:32:04,280 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 06:32:04,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:32:04,281 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 06:32:04,282 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:32:04,419 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:32:04,419 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:32:04,549 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:32:04,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343454165] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:32:04,550 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:32:04,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2023-11-29 06:32:04,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888810687] [2023-11-29 06:32:04,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:32:04,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 06:32:04,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:32:04,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 06:32:04,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=556, Unknown=0, NotChecked=0, Total=650 [2023-11-29 06:32:04,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2023-11-29 06:32:04,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 500 places, 1671 transitions, 42031 flow. Second operand has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:32:04,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:32:04,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2023-11-29 06:32:04,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:32:08,910 INFO L124 PetriNetUnfolderBase]: 5113/10090 cut-off events. [2023-11-29 06:32:08,910 INFO L125 PetriNetUnfolderBase]: For 194115/194115 co-relation queries the response was YES. [2023-11-29 06:32:08,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83983 conditions, 10090 events. 5113/10090 cut-off events. For 194115/194115 co-relation queries the response was YES. Maximal size of possible extension queue 600. Compared 83650 event pairs, 721 based on Foata normal form. 88/10178 useless extension candidates. Maximal degree in co-relation 83899. Up to 3075 conditions per place. [2023-11-29 06:32:09,024 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 665 selfloop transitions, 1009 changer transitions 84/1760 dead transitions. [2023-11-29 06:32:09,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 1760 transitions, 47042 flow [2023-11-29 06:32:09,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 06:32:09,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-29 06:32:09,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 191 transitions. [2023-11-29 06:32:09,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30462519936204147 [2023-11-29 06:32:09,026 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 191 transitions. [2023-11-29 06:32:09,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 191 transitions. [2023-11-29 06:32:09,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:32:09,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 191 transitions. [2023-11-29 06:32:09,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 10.052631578947368) internal successors, (191), 19 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:32:09,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 33.0) internal successors, (660), 20 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:32:09,027 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 33.0) internal successors, (660), 20 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:32:09,027 INFO L175 Difference]: Start difference. First operand has 500 places, 1671 transitions, 42031 flow. Second operand 19 states and 191 transitions. [2023-11-29 06:32:09,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 505 places, 1760 transitions, 47042 flow [2023-11-29 06:32:11,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 1760 transitions, 43458 flow, removed 26 selfloop flow, removed 39 redundant places. [2023-11-29 06:32:11,383 INFO L231 Difference]: Finished difference. Result has 471 places, 1650 transitions, 40192 flow [2023-11-29 06:32:11,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=38565, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1671, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=997, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=674, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=40192, PETRI_PLACES=471, PETRI_TRANSITIONS=1650} [2023-11-29 06:32:11,385 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 437 predicate places. [2023-11-29 06:32:11,385 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 1650 transitions, 40192 flow [2023-11-29 06:32:11,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:32:11,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:32:11,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:32:11,390 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 06:32:11,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:32:11,586 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-29 06:32:11,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:32:11,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1698622542, now seen corresponding path program 5 times [2023-11-29 06:32:11,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:32:11,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577667898] [2023-11-29 06:32:11,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:32:11,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:32:11,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:32:11,681 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:32:11,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:32:11,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577667898] [2023-11-29 06:32:11,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577667898] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:32:11,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942618395] [2023-11-29 06:32:11,682 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 06:32:11,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:32:11,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:32:11,683 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:32:11,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 06:32:11,747 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 06:32:11,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:32:11,748 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 06:32:11,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:32:11,846 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:32:11,847 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:32:11,947 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:32:11,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942618395] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:32:11,948 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:32:11,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2023-11-29 06:32:11,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765714211] [2023-11-29 06:32:11,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:32:11,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 06:32:11,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:32:11,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 06:32:11,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=543, Unknown=0, NotChecked=0, Total=650 [2023-11-29 06:32:12,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2023-11-29 06:32:12,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 1650 transitions, 40192 flow. Second operand has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:32:12,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:32:12,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2023-11-29 06:32:12,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:32:16,885 INFO L124 PetriNetUnfolderBase]: 5300/10475 cut-off events. [2023-11-29 06:32:16,885 INFO L125 PetriNetUnfolderBase]: For 195062/195062 co-relation queries the response was YES. [2023-11-29 06:32:16,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86648 conditions, 10475 events. 5300/10475 cut-off events. For 195062/195062 co-relation queries the response was YES. Maximal size of possible extension queue 603. Compared 87616 event pairs, 593 based on Foata normal form. 28/10503 useless extension candidates. Maximal degree in co-relation 86562. Up to 1897 conditions per place. [2023-11-29 06:32:16,988 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 317 selfloop transitions, 1616 changer transitions 15/1950 dead transitions. [2023-11-29 06:32:16,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 1950 transitions, 50648 flow [2023-11-29 06:32:16,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-11-29 06:32:16,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2023-11-29 06:32:16,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 335 transitions. [2023-11-29 06:32:16,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2602952602952603 [2023-11-29 06:32:16,989 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 335 transitions. [2023-11-29 06:32:16,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 335 transitions. [2023-11-29 06:32:16,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:32:16,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 335 transitions. [2023-11-29 06:32:16,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 8.58974358974359) internal successors, (335), 39 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:32:16,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 33.0) internal successors, (1320), 40 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:32:16,992 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 33.0) internal successors, (1320), 40 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:32:16,992 INFO L175 Difference]: Start difference. First operand has 471 places, 1650 transitions, 40192 flow. Second operand 39 states and 335 transitions. [2023-11-29 06:32:16,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 504 places, 1950 transitions, 50648 flow [2023-11-29 06:32:19,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 491 places, 1950 transitions, 49053 flow, removed 75 selfloop flow, removed 13 redundant places. [2023-11-29 06:32:19,717 INFO L231 Difference]: Finished difference. Result has 501 places, 1866 transitions, 48802 flow [2023-11-29 06:32:19,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=38893, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1650, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1402, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=48802, PETRI_PLACES=501, PETRI_TRANSITIONS=1866} [2023-11-29 06:32:19,718 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 467 predicate places. [2023-11-29 06:32:19,718 INFO L495 AbstractCegarLoop]: Abstraction has has 501 places, 1866 transitions, 48802 flow [2023-11-29 06:32:19,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:32:19,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:32:19,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:32:19,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-29 06:32:19,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2023-11-29 06:32:19,919 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-29 06:32:19,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:32:19,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1701999352, now seen corresponding path program 6 times [2023-11-29 06:32:19,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:32:19,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931797838] [2023-11-29 06:32:19,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:32:19,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:32:19,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:32:20,010 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:32:20,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:32:20,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931797838] [2023-11-29 06:32:20,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931797838] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:32:20,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869283746] [2023-11-29 06:32:20,011 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 06:32:20,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:32:20,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:32:20,012 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:32:20,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 06:32:20,076 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-11-29 06:32:20,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:32:20,077 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 06:32:20,078 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:32:20,183 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:32:20,183 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:32:20,302 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:32:20,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869283746] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:32:20,303 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:32:20,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2023-11-29 06:32:20,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188764201] [2023-11-29 06:32:20,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:32:20,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 06:32:20,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:32:20,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 06:32:20,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=563, Unknown=0, NotChecked=0, Total=650 [2023-11-29 06:32:20,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2023-11-29 06:32:20,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 501 places, 1866 transitions, 48802 flow. Second operand has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:32:20,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:32:20,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2023-11-29 06:32:20,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:32:26,839 INFO L124 PetriNetUnfolderBase]: 6092/11939 cut-off events. [2023-11-29 06:32:26,840 INFO L125 PetriNetUnfolderBase]: For 237142/237142 co-relation queries the response was YES. [2023-11-29 06:32:26,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103654 conditions, 11939 events. 6092/11939 cut-off events. For 237142/237142 co-relation queries the response was YES. Maximal size of possible extension queue 713. Compared 101107 event pairs, 624 based on Foata normal form. 80/12019 useless extension candidates. Maximal degree in co-relation 103564. Up to 2867 conditions per place. [2023-11-29 06:32:27,000 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 405 selfloop transitions, 1785 changer transitions 97/2289 dead transitions. [2023-11-29 06:32:27,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 548 places, 2289 transitions, 62390 flow [2023-11-29 06:32:27,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-11-29 06:32:27,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2023-11-29 06:32:27,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 448 transitions. [2023-11-29 06:32:27,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.27151515151515154 [2023-11-29 06:32:27,002 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 448 transitions. [2023-11-29 06:32:27,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 448 transitions. [2023-11-29 06:32:27,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:32:27,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 448 transitions. [2023-11-29 06:32:27,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 8.96) internal successors, (448), 50 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:32:27,004 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 33.0) internal successors, (1683), 51 states have internal predecessors, (1683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:32:27,004 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 33.0) internal successors, (1683), 51 states have internal predecessors, (1683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:32:27,004 INFO L175 Difference]: Start difference. First operand has 501 places, 1866 transitions, 48802 flow. Second operand 50 states and 448 transitions. [2023-11-29 06:32:27,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 548 places, 2289 transitions, 62390 flow [2023-11-29 06:32:31,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 534 places, 2289 transitions, 60883 flow, removed 40 selfloop flow, removed 14 redundant places. [2023-11-29 06:32:31,273 INFO L231 Difference]: Finished difference. Result has 542 places, 2077 transitions, 57029 flow [2023-11-29 06:32:31,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=47501, PETRI_DIFFERENCE_MINUEND_PLACES=485, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1866, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1539, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=57029, PETRI_PLACES=542, PETRI_TRANSITIONS=2077} [2023-11-29 06:32:31,275 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 508 predicate places. [2023-11-29 06:32:31,275 INFO L495 AbstractCegarLoop]: Abstraction has has 542 places, 2077 transitions, 57029 flow [2023-11-29 06:32:31,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:32:31,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:32:31,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:32:31,279 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 06:32:31,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2023-11-29 06:32:31,475 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-29 06:32:31,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:32:31,476 INFO L85 PathProgramCache]: Analyzing trace with hash -615224144, now seen corresponding path program 7 times [2023-11-29 06:32:31,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:32:31,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913339456] [2023-11-29 06:32:31,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:32:31,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:32:31,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:32:31,562 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:32:31,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:32:31,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913339456] [2023-11-29 06:32:31,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913339456] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:32:31,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140073621] [2023-11-29 06:32:31,563 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 06:32:31,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:32:31,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:32:31,564 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:32:31,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 06:32:31,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:32:31,626 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 06:32:31,627 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:32:31,753 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:32:31,753 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:32:31,860 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:32:31,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140073621] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:32:31,860 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:32:31,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2023-11-29 06:32:31,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572221481] [2023-11-29 06:32:31,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:32:31,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 06:32:31,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:32:31,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 06:32:31,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2023-11-29 06:32:32,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2023-11-29 06:32:32,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 542 places, 2077 transitions, 57029 flow. Second operand has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:32:32,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:32:32,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2023-11-29 06:32:32,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:32:38,577 INFO L124 PetriNetUnfolderBase]: 5993/11750 cut-off events. [2023-11-29 06:32:38,578 INFO L125 PetriNetUnfolderBase]: For 243109/243109 co-relation queries the response was YES. [2023-11-29 06:32:38,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105796 conditions, 11750 events. 5993/11750 cut-off events. For 243109/243109 co-relation queries the response was YES. Maximal size of possible extension queue 712. Compared 99295 event pairs, 695 based on Foata normal form. 24/11774 useless extension candidates. Maximal degree in co-relation 105702. Up to 3423 conditions per place. [2023-11-29 06:32:38,731 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 314 selfloop transitions, 1863 changer transitions 37/2216 dead transitions. [2023-11-29 06:32:38,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 579 places, 2216 transitions, 63765 flow [2023-11-29 06:32:38,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-11-29 06:32:38,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2023-11-29 06:32:38,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 358 transitions. [2023-11-29 06:32:38,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2522903453136011 [2023-11-29 06:32:38,733 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 358 transitions. [2023-11-29 06:32:38,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 358 transitions. [2023-11-29 06:32:38,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:32:38,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 358 transitions. [2023-11-29 06:32:38,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 8.325581395348838) internal successors, (358), 43 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:32:38,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 33.0) internal successors, (1452), 44 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:32:38,736 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 33.0) internal successors, (1452), 44 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:32:38,737 INFO L175 Difference]: Start difference. First operand has 542 places, 2077 transitions, 57029 flow. Second operand 43 states and 358 transitions. [2023-11-29 06:32:38,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 579 places, 2216 transitions, 63765 flow [2023-11-29 06:32:43,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 551 places, 2216 transitions, 61090 flow, removed 59 selfloop flow, removed 28 redundant places. [2023-11-29 06:32:43,301 INFO L231 Difference]: Finished difference. Result has 557 places, 2121 transitions, 59371 flow [2023-11-29 06:32:43,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=54442, PETRI_DIFFERENCE_MINUEND_PLACES=509, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2077, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1802, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=59371, PETRI_PLACES=557, PETRI_TRANSITIONS=2121} [2023-11-29 06:32:43,302 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 523 predicate places. [2023-11-29 06:32:43,302 INFO L495 AbstractCegarLoop]: Abstraction has has 557 places, 2121 transitions, 59371 flow [2023-11-29 06:32:43,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:32:43,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:32:43,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:32:43,307 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 06:32:43,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2023-11-29 06:32:43,503 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-29 06:32:43,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:32:43,503 INFO L85 PathProgramCache]: Analyzing trace with hash 2008193246, now seen corresponding path program 8 times [2023-11-29 06:32:43,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:32:43,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749120598] [2023-11-29 06:32:43,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:32:43,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:32:43,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:32:43,589 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:32:43,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:32:43,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749120598] [2023-11-29 06:32:43,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749120598] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:32:43,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833626835] [2023-11-29 06:32:43,589 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 06:32:43,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:32:43,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:32:43,590 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:32:43,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 06:32:43,648 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 06:32:43,648 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:32:43,649 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 06:32:43,649 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:32:43,769 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:32:43,769 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:32:43,883 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:32:43,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833626835] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:32:43,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:32:43,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2023-11-29 06:32:43,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535858408] [2023-11-29 06:32:43,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:32:43,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 06:32:43,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:32:43,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 06:32:43,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2023-11-29 06:32:43,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2023-11-29 06:32:43,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 557 places, 2121 transitions, 59371 flow. Second operand has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:32:43,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:32:43,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2023-11-29 06:32:43,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:32:52,416 INFO L124 PetriNetUnfolderBase]: 7143/13948 cut-off events. [2023-11-29 06:32:52,416 INFO L125 PetriNetUnfolderBase]: For 297954/297954 co-relation queries the response was YES. [2023-11-29 06:32:52,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128292 conditions, 13948 events. 7143/13948 cut-off events. For 297954/297954 co-relation queries the response was YES. Maximal size of possible extension queue 867. Compared 121631 event pairs, 639 based on Foata normal form. 100/14048 useless extension candidates. Maximal degree in co-relation 128200. Up to 2877 conditions per place. [2023-11-29 06:32:52,561 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 338 selfloop transitions, 2407 changer transitions 55/2802 dead transitions. [2023-11-29 06:32:52,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 624 places, 2802 transitions, 81924 flow [2023-11-29 06:32:52,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2023-11-29 06:32:52,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2023-11-29 06:32:52,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 572 transitions. [2023-11-29 06:32:52,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.24413145539906103 [2023-11-29 06:32:52,562 INFO L72 ComplementDD]: Start complementDD. Operand 71 states and 572 transitions. [2023-11-29 06:32:52,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 71 states and 572 transitions. [2023-11-29 06:32:52,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:32:52,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 71 states and 572 transitions. [2023-11-29 06:32:52,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 72 states, 71 states have (on average 8.056338028169014) internal successors, (572), 71 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:32:52,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 72 states, 72 states have (on average 33.0) internal successors, (2376), 72 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:32:52,566 INFO L81 ComplementDD]: Finished complementDD. Result has 72 states, 72 states have (on average 33.0) internal successors, (2376), 72 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:32:52,566 INFO L175 Difference]: Start difference. First operand has 557 places, 2121 transitions, 59371 flow. Second operand 71 states and 572 transitions. [2023-11-29 06:32:52,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 624 places, 2802 transitions, 81924 flow [2023-11-29 06:32:58,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 606 places, 2802 transitions, 81143 flow, removed 86 selfloop flow, removed 18 redundant places. [2023-11-29 06:32:58,080 INFO L231 Difference]: Finished difference. Result has 612 places, 2635 transitions, 78849 flow [2023-11-29 06:32:58,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=58765, PETRI_DIFFERENCE_MINUEND_PLACES=536, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1879, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=71, PETRI_FLOW=78849, PETRI_PLACES=612, PETRI_TRANSITIONS=2635} [2023-11-29 06:32:58,082 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 578 predicate places. [2023-11-29 06:32:58,082 INFO L495 AbstractCegarLoop]: Abstraction has has 612 places, 2635 transitions, 78849 flow [2023-11-29 06:32:58,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:32:58,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:32:58,082 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:32:58,086 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 06:32:58,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2023-11-29 06:32:58,283 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-29 06:32:58,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:32:58,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1412319674, now seen corresponding path program 9 times [2023-11-29 06:32:58,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:32:58,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860830693] [2023-11-29 06:32:58,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:32:58,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:32:58,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:32:58,368 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:32:58,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:32:58,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860830693] [2023-11-29 06:32:58,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860830693] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:32:58,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981385949] [2023-11-29 06:32:58,368 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 06:32:58,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:32:58,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:32:58,369 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:32:58,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 06:32:58,441 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 06:32:58,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:32:58,442 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 06:32:58,443 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:32:58,578 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:32:58,578 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:32:58,708 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:32:58,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981385949] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:32:58,708 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:32:58,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2023-11-29 06:32:58,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908491451] [2023-11-29 06:32:58,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:32:58,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 06:32:58,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:32:58,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 06:32:58,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=559, Unknown=0, NotChecked=0, Total=650 [2023-11-29 06:32:58,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2023-11-29 06:32:58,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 612 places, 2635 transitions, 78849 flow. Second operand has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:32:58,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:32:58,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2023-11-29 06:32:58,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:33:07,861 INFO L124 PetriNetUnfolderBase]: 7081/13836 cut-off events. [2023-11-29 06:33:07,861 INFO L125 PetriNetUnfolderBase]: For 325072/325072 co-relation queries the response was YES. [2023-11-29 06:33:07,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132381 conditions, 13836 events. 7081/13836 cut-off events. For 325072/325072 co-relation queries the response was YES. Maximal size of possible extension queue 835. Compared 120389 event pairs, 472 based on Foata normal form. 76/13912 useless extension candidates. Maximal degree in co-relation 132288. Up to 2643 conditions per place. [2023-11-29 06:33:08,015 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 295 selfloop transitions, 2150 changer transitions 339/2786 dead transitions. [2023-11-29 06:33:08,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 672 places, 2786 transitions, 85672 flow [2023-11-29 06:33:08,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2023-11-29 06:33:08,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2023-11-29 06:33:08,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 558 transitions. [2023-11-29 06:33:08,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.24866310160427807 [2023-11-29 06:33:08,016 INFO L72 ComplementDD]: Start complementDD. Operand 68 states and 558 transitions. [2023-11-29 06:33:08,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 68 states and 558 transitions. [2023-11-29 06:33:08,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:33:08,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 68 states and 558 transitions. [2023-11-29 06:33:08,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 69 states, 68 states have (on average 8.205882352941176) internal successors, (558), 68 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:08,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 69 states, 69 states have (on average 33.0) internal successors, (2277), 69 states have internal predecessors, (2277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:08,020 INFO L81 ComplementDD]: Finished complementDD. Result has 69 states, 69 states have (on average 33.0) internal successors, (2277), 69 states have internal predecessors, (2277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:08,020 INFO L175 Difference]: Start difference. First operand has 612 places, 2635 transitions, 78849 flow. Second operand 68 states and 558 transitions. [2023-11-29 06:33:08,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 672 places, 2786 transitions, 85672 flow [2023-11-29 06:33:14,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 634 places, 2786 transitions, 84301 flow, removed 48 selfloop flow, removed 38 redundant places. [2023-11-29 06:33:14,168 INFO L231 Difference]: Finished difference. Result has 641 places, 2346 transitions, 72762 flow [2023-11-29 06:33:14,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=77507, PETRI_DIFFERENCE_MINUEND_PLACES=567, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2635, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=492, PETRI_DIFFERENCE_SUBTRAHEND_STATES=68, PETRI_FLOW=72762, PETRI_PLACES=641, PETRI_TRANSITIONS=2346} [2023-11-29 06:33:14,171 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 607 predicate places. [2023-11-29 06:33:14,171 INFO L495 AbstractCegarLoop]: Abstraction has has 641 places, 2346 transitions, 72762 flow [2023-11-29 06:33:14,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:14,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:33:14,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:33:14,176 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 06:33:14,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2023-11-29 06:33:14,372 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-29 06:33:14,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:33:14,373 INFO L85 PathProgramCache]: Analyzing trace with hash -603395408, now seen corresponding path program 10 times [2023-11-29 06:33:14,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:33:14,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936227386] [2023-11-29 06:33:14,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:33:14,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:33:14,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:33:14,452 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:33:14,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:33:14,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936227386] [2023-11-29 06:33:14,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936227386] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:33:14,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060677017] [2023-11-29 06:33:14,452 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 06:33:14,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:33:14,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:33:14,453 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:33:14,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 06:33:14,516 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 06:33:14,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:33:14,516 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 06:33:14,517 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:33:14,620 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:33:14,620 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:33:14,717 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:33:14,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1060677017] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:33:14,718 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:33:14,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2023-11-29 06:33:14,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442594192] [2023-11-29 06:33:14,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:33:14,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 06:33:14,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:33:14,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 06:33:14,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=541, Unknown=0, NotChecked=0, Total=650 [2023-11-29 06:33:14,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2023-11-29 06:33:14,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 641 places, 2346 transitions, 72762 flow. Second operand has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:14,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:33:14,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2023-11-29 06:33:14,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:33:21,217 INFO L124 PetriNetUnfolderBase]: 5920/11421 cut-off events. [2023-11-29 06:33:21,217 INFO L125 PetriNetUnfolderBase]: For 284365/284365 co-relation queries the response was YES. [2023-11-29 06:33:21,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115993 conditions, 11421 events. 5920/11421 cut-off events. For 284365/284365 co-relation queries the response was YES. Maximal size of possible extension queue 704. Compared 95172 event pairs, 192 based on Foata normal form. 144/11565 useless extension candidates. Maximal degree in co-relation 115900. Up to 3092 conditions per place. [2023-11-29 06:33:21,335 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 129 selfloop transitions, 1779 changer transitions 509/2419 dead transitions. [2023-11-29 06:33:21,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 659 places, 2419 transitions, 77982 flow [2023-11-29 06:33:21,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-11-29 06:33:21,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2023-11-29 06:33:21,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 329 transitions. [2023-11-29 06:33:21,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.24924242424242424 [2023-11-29 06:33:21,337 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 329 transitions. [2023-11-29 06:33:21,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 329 transitions. [2023-11-29 06:33:21,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:33:21,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 329 transitions. [2023-11-29 06:33:21,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 8.225) internal successors, (329), 40 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:21,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 33.0) internal successors, (1353), 41 states have internal predecessors, (1353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:21,340 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 33.0) internal successors, (1353), 41 states have internal predecessors, (1353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:21,340 INFO L175 Difference]: Start difference. First operand has 641 places, 2346 transitions, 72762 flow. Second operand 40 states and 329 transitions. [2023-11-29 06:33:21,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 659 places, 2419 transitions, 77982 flow [2023-11-29 06:33:25,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 600 places, 2419 transitions, 74353 flow, removed 145 selfloop flow, removed 59 redundant places. [2023-11-29 06:33:25,852 INFO L231 Difference]: Finished difference. Result has 603 places, 1848 transitions, 59130 flow [2023-11-29 06:33:25,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=69009, PETRI_DIFFERENCE_MINUEND_PLACES=561, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1770, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=565, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=59130, PETRI_PLACES=603, PETRI_TRANSITIONS=1848} [2023-11-29 06:33:25,854 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 569 predicate places. [2023-11-29 06:33:25,854 INFO L495 AbstractCegarLoop]: Abstraction has has 603 places, 1848 transitions, 59130 flow [2023-11-29 06:33:25,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.615384615384615) internal successors, (146), 26 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:25,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:33:25,855 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:33:25,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-29 06:33:26,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2023-11-29 06:33:26,055 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-29 06:33:26,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:33:26,056 INFO L85 PathProgramCache]: Analyzing trace with hash 641883795, now seen corresponding path program 5 times [2023-11-29 06:33:26,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:33:26,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496041480] [2023-11-29 06:33:26,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:33:26,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:33:26,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:33:26,120 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:33:26,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:33:26,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496041480] [2023-11-29 06:33:26,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496041480] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:33:26,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372789876] [2023-11-29 06:33:26,120 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 06:33:26,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:33:26,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:33:26,121 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:33:26,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 06:33:26,186 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-11-29 06:33:26,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:33:26,187 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 06:33:26,188 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:33:26,276 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 06:33:26,276 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:33:26,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372789876] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:33:26,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:33:26,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 15 [2023-11-29 06:33:26,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067191451] [2023-11-29 06:33:26,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:33:26,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 06:33:26,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:33:26,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 06:33:26,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2023-11-29 06:33:26,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2023-11-29 06:33:26,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 603 places, 1848 transitions, 59130 flow. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:26,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:33:26,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2023-11-29 06:33:26,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:33:30,351 INFO L124 PetriNetUnfolderBase]: 4446/8908 cut-off events. [2023-11-29 06:33:30,351 INFO L125 PetriNetUnfolderBase]: For 254493/254493 co-relation queries the response was YES. [2023-11-29 06:33:30,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95034 conditions, 8908 events. 4446/8908 cut-off events. For 254493/254493 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 73632 event pairs, 437 based on Foata normal form. 108/9016 useless extension candidates. Maximal degree in co-relation 94955. Up to 1771 conditions per place. [2023-11-29 06:33:30,441 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 194 selfloop transitions, 1574 changer transitions 245/2015 dead transitions. [2023-11-29 06:33:30,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 560 places, 2015 transitions, 68127 flow [2023-11-29 06:33:30,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 06:33:30,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 06:33:30,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2023-11-29 06:33:30,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31129476584022037 [2023-11-29 06:33:30,442 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 113 transitions. [2023-11-29 06:33:30,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 113 transitions. [2023-11-29 06:33:30,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:33:30,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 113 transitions. [2023-11-29 06:33:30,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:30,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 33.0) internal successors, (396), 12 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:30,443 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 33.0) internal successors, (396), 12 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:30,443 INFO L175 Difference]: Start difference. First operand has 603 places, 1848 transitions, 59130 flow. Second operand 11 states and 113 transitions. [2023-11-29 06:33:30,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 560 places, 2015 transitions, 68127 flow [2023-11-29 06:33:32,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 513 places, 2015 transitions, 58584 flow, removed 72 selfloop flow, removed 47 redundant places. [2023-11-29 06:33:32,780 INFO L231 Difference]: Finished difference. Result has 514 places, 1739 transitions, 51081 flow [2023-11-29 06:33:32,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=50266, PETRI_DIFFERENCE_MINUEND_PLACES=503, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1842, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1471, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=51081, PETRI_PLACES=514, PETRI_TRANSITIONS=1739} [2023-11-29 06:33:32,781 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 480 predicate places. [2023-11-29 06:33:32,781 INFO L495 AbstractCegarLoop]: Abstraction has has 514 places, 1739 transitions, 51081 flow [2023-11-29 06:33:32,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:32,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:33:32,782 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:33:32,786 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 06:33:32,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2023-11-29 06:33:32,982 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-29 06:33:32,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:33:32,983 INFO L85 PathProgramCache]: Analyzing trace with hash -264419967, now seen corresponding path program 6 times [2023-11-29 06:33:32,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:33:32,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104934747] [2023-11-29 06:33:32,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:33:32,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:33:32,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:33:33,037 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:33:33,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:33:33,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104934747] [2023-11-29 06:33:33,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104934747] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:33:33,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161818592] [2023-11-29 06:33:33,038 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 06:33:33,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:33:33,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:33:33,039 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:33:33,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 06:33:33,106 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-29 06:33:33,106 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:33:33,107 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 06:33:33,108 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:33:33,290 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:33:33,290 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:33:33,456 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:33:33,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161818592] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:33:33,456 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:33:33,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 29 [2023-11-29 06:33:33,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328374269] [2023-11-29 06:33:33,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:33:33,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-29 06:33:33,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:33:33,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-29 06:33:33,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=711, Unknown=0, NotChecked=0, Total=812 [2023-11-29 06:33:33,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2023-11-29 06:33:33,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 514 places, 1739 transitions, 51081 flow. Second operand has 29 states, 29 states have (on average 5.655172413793103) internal successors, (164), 29 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:33,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:33:33,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2023-11-29 06:33:33,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:33:40,494 INFO L124 PetriNetUnfolderBase]: 6571/13081 cut-off events. [2023-11-29 06:33:40,494 INFO L125 PetriNetUnfolderBase]: For 329426/329426 co-relation queries the response was YES. [2023-11-29 06:33:40,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126338 conditions, 13081 events. 6571/13081 cut-off events. For 329426/329426 co-relation queries the response was YES. Maximal size of possible extension queue 703. Compared 113645 event pairs, 276 based on Foata normal form. 288/13369 useless extension candidates. Maximal degree in co-relation 126270. Up to 2132 conditions per place. [2023-11-29 06:33:40,620 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 242 selfloop transitions, 2216 changer transitions 516/2976 dead transitions. [2023-11-29 06:33:40,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 585 places, 2976 transitions, 89618 flow [2023-11-29 06:33:40,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2023-11-29 06:33:40,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2023-11-29 06:33:40,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 693 transitions. [2023-11-29 06:33:40,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.25609756097560976 [2023-11-29 06:33:40,622 INFO L72 ComplementDD]: Start complementDD. Operand 82 states and 693 transitions. [2023-11-29 06:33:40,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 82 states and 693 transitions. [2023-11-29 06:33:40,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:33:40,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 82 states and 693 transitions. [2023-11-29 06:33:40,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 83 states, 82 states have (on average 8.451219512195122) internal successors, (693), 82 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:40,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 83 states, 83 states have (on average 33.0) internal successors, (2739), 83 states have internal predecessors, (2739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:40,627 INFO L81 ComplementDD]: Finished complementDD. Result has 83 states, 83 states have (on average 33.0) internal successors, (2739), 83 states have internal predecessors, (2739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:40,627 INFO L175 Difference]: Start difference. First operand has 514 places, 1739 transitions, 51081 flow. Second operand 82 states and 693 transitions. [2023-11-29 06:33:40,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 585 places, 2976 transitions, 89618 flow [2023-11-29 06:33:45,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 576 places, 2976 transitions, 88518 flow, removed 42 selfloop flow, removed 9 redundant places. [2023-11-29 06:33:45,697 INFO L231 Difference]: Finished difference. Result has 585 places, 2316 transitions, 72424 flow [2023-11-29 06:33:45,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=50310, PETRI_DIFFERENCE_MINUEND_PLACES=495, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1739, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1622, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=82, PETRI_FLOW=72424, PETRI_PLACES=585, PETRI_TRANSITIONS=2316} [2023-11-29 06:33:45,699 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 551 predicate places. [2023-11-29 06:33:45,699 INFO L495 AbstractCegarLoop]: Abstraction has has 585 places, 2316 transitions, 72424 flow [2023-11-29 06:33:45,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.655172413793103) internal successors, (164), 29 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:45,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:33:45,699 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:33:45,703 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 06:33:45,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2023-11-29 06:33:45,899 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-29 06:33:45,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:33:45,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1126621296, now seen corresponding path program 7 times [2023-11-29 06:33:45,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:33:45,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161414095] [2023-11-29 06:33:45,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:33:45,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:33:45,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:33:45,994 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:33:45,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:33:45,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161414095] [2023-11-29 06:33:45,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161414095] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:33:45,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628828060] [2023-11-29 06:33:45,995 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 06:33:45,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:33:45,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:33:45,996 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:33:46,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 06:33:46,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:33:46,076 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 06:33:46,077 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:33:46,114 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 06:33:46,114 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:33:46,211 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 06:33:46,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628828060] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:33:46,211 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:33:46,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 18 [2023-11-29 06:33:46,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037783144] [2023-11-29 06:33:46,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:33:46,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 06:33:46,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:33:46,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 06:33:46,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2023-11-29 06:33:46,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2023-11-29 06:33:46,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 585 places, 2316 transitions, 72424 flow. Second operand has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:46,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:33:46,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2023-11-29 06:33:46,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:33:53,310 INFO L124 PetriNetUnfolderBase]: 6978/14150 cut-off events. [2023-11-29 06:33:53,311 INFO L125 PetriNetUnfolderBase]: For 422531/422531 co-relation queries the response was YES. [2023-11-29 06:33:53,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143960 conditions, 14150 events. 6978/14150 cut-off events. For 422531/422531 co-relation queries the response was YES. Maximal size of possible extension queue 750. Compared 125436 event pairs, 196 based on Foata normal form. 214/14364 useless extension candidates. Maximal degree in co-relation 143884. Up to 3334 conditions per place. [2023-11-29 06:33:53,463 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 549 selfloop transitions, 2609 changer transitions 0/3160 dead transitions. [2023-11-29 06:33:53,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 610 places, 3160 transitions, 103279 flow [2023-11-29 06:33:53,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-29 06:33:53,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-11-29 06:33:53,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 342 transitions. [2023-11-29 06:33:53,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2961038961038961 [2023-11-29 06:33:53,464 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 342 transitions. [2023-11-29 06:33:53,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 342 transitions. [2023-11-29 06:33:53,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:33:53,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 342 transitions. [2023-11-29 06:33:53,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 9.771428571428572) internal successors, (342), 35 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:53,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 33.0) internal successors, (1188), 36 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:53,466 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 33.0) internal successors, (1188), 36 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:33:53,466 INFO L175 Difference]: Start difference. First operand has 585 places, 2316 transitions, 72424 flow. Second operand 35 states and 342 transitions. [2023-11-29 06:33:53,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 610 places, 3160 transitions, 103279 flow [2023-11-29 06:34:00,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 580 places, 3160 transitions, 101468 flow, removed 62 selfloop flow, removed 30 redundant places. [2023-11-29 06:34:00,225 INFO L231 Difference]: Finished difference. Result has 591 places, 2955 transitions, 100255 flow [2023-11-29 06:34:00,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=70902, PETRI_DIFFERENCE_MINUEND_PLACES=546, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1996, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=100255, PETRI_PLACES=591, PETRI_TRANSITIONS=2955} [2023-11-29 06:34:00,227 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 557 predicate places. [2023-11-29 06:34:00,227 INFO L495 AbstractCegarLoop]: Abstraction has has 591 places, 2955 transitions, 100255 flow [2023-11-29 06:34:00,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:00,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:34:00,227 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:34:00,231 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 06:34:00,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2023-11-29 06:34:00,428 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-29 06:34:00,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:34:00,428 INFO L85 PathProgramCache]: Analyzing trace with hash 2010275248, now seen corresponding path program 8 times [2023-11-29 06:34:00,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:34:00,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216372530] [2023-11-29 06:34:00,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:34:00,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:34:00,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:34:00,502 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:34:00,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:34:00,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216372530] [2023-11-29 06:34:00,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216372530] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:34:00,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539056138] [2023-11-29 06:34:00,503 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 06:34:00,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:34:00,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:34:00,504 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:34:00,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 06:34:00,571 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 06:34:00,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:34:00,572 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 06:34:00,572 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:34:00,603 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 06:34:00,603 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:34:00,688 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 06:34:00,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539056138] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:34:00,689 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:34:00,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 17 [2023-11-29 06:34:00,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572090185] [2023-11-29 06:34:00,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:34:00,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 06:34:00,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:34:00,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 06:34:00,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2023-11-29 06:34:00,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2023-11-29 06:34:00,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 591 places, 2955 transitions, 100255 flow. Second operand has 17 states, 17 states have (on average 5.823529411764706) internal successors, (99), 17 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:00,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:34:00,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2023-11-29 06:34:00,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:34:12,853 INFO L124 PetriNetUnfolderBase]: 9866/20056 cut-off events. [2023-11-29 06:34:12,853 INFO L125 PetriNetUnfolderBase]: For 807000/807000 co-relation queries the response was YES. [2023-11-29 06:34:13,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 220509 conditions, 20056 events. 9866/20056 cut-off events. For 807000/807000 co-relation queries the response was YES. Maximal size of possible extension queue 943. Compared 183866 event pairs, 309 based on Foata normal form. 420/20476 useless extension candidates. Maximal degree in co-relation 220427. Up to 4699 conditions per place. [2023-11-29 06:34:13,126 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 712 selfloop transitions, 3448 changer transitions 0/4162 dead transitions. [2023-11-29 06:34:13,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 613 places, 4162 transitions, 149878 flow [2023-11-29 06:34:13,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-29 06:34:13,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-11-29 06:34:13,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 236 transitions. [2023-11-29 06:34:13,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.310935441370224 [2023-11-29 06:34:13,127 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 236 transitions. [2023-11-29 06:34:13,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 236 transitions. [2023-11-29 06:34:13,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:34:13,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 236 transitions. [2023-11-29 06:34:13,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 10.26086956521739) internal successors, (236), 23 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:13,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 33.0) internal successors, (792), 24 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:13,129 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 33.0) internal successors, (792), 24 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:13,129 INFO L175 Difference]: Start difference. First operand has 591 places, 2955 transitions, 100255 flow. Second operand 23 states and 236 transitions. [2023-11-29 06:34:13,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 613 places, 4162 transitions, 149878 flow [2023-11-29 06:34:28,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 604 places, 4162 transitions, 149399 flow, removed 40 selfloop flow, removed 9 redundant places. [2023-11-29 06:34:29,026 INFO L231 Difference]: Finished difference. Result has 614 places, 3887 transitions, 146879 flow [2023-11-29 06:34:29,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=99792, PETRI_DIFFERENCE_MINUEND_PLACES=582, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2955, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2580, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=146879, PETRI_PLACES=614, PETRI_TRANSITIONS=3887} [2023-11-29 06:34:29,029 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 580 predicate places. [2023-11-29 06:34:29,029 INFO L495 AbstractCegarLoop]: Abstraction has has 614 places, 3887 transitions, 146879 flow [2023-11-29 06:34:29,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.823529411764706) internal successors, (99), 17 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:29,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:34:29,029 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:34:29,034 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 06:34:29,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2023-11-29 06:34:29,230 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-29 06:34:29,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:34:29,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1657899558, now seen corresponding path program 9 times [2023-11-29 06:34:29,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:34:29,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668565980] [2023-11-29 06:34:29,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:34:29,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:34:29,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:34:29,304 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:34:29,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:34:29,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668565980] [2023-11-29 06:34:29,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668565980] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:34:29,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611158540] [2023-11-29 06:34:29,304 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 06:34:29,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:34:29,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:34:29,305 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:34:29,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 06:34:29,394 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-29 06:34:29,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:34:29,395 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 06:34:29,396 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:34:29,580 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 06:34:29,580 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:34:29,745 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 06:34:29,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611158540] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:34:29,746 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:34:29,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 29 [2023-11-29 06:34:29,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839420923] [2023-11-29 06:34:29,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:34:29,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-29 06:34:29,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:34:29,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-29 06:34:29,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=714, Unknown=0, NotChecked=0, Total=812 [2023-11-29 06:34:29,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2023-11-29 06:34:29,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 614 places, 3887 transitions, 146879 flow. Second operand has 29 states, 29 states have (on average 5.862068965517241) internal successors, (170), 29 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:29,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:34:29,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2023-11-29 06:34:29,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:34:53,587 INFO L124 PetriNetUnfolderBase]: 11206/22823 cut-off events. [2023-11-29 06:34:53,587 INFO L125 PetriNetUnfolderBase]: For 1088890/1088890 co-relation queries the response was YES. [2023-11-29 06:34:53,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 270977 conditions, 22823 events. 11206/22823 cut-off events. For 1088890/1088890 co-relation queries the response was YES. Maximal size of possible extension queue 1046. Compared 213654 event pairs, 908 based on Foata normal form. 144/22967 useless extension candidates. Maximal degree in co-relation 270886. Up to 6788 conditions per place. [2023-11-29 06:34:53,910 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 518 selfloop transitions, 3747 changer transitions 191/4458 dead transitions. [2023-11-29 06:34:53,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 669 places, 4458 transitions, 173841 flow [2023-11-29 06:34:53,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-11-29 06:34:53,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2023-11-29 06:34:53,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 472 transitions. [2023-11-29 06:34:53,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2554112554112554 [2023-11-29 06:34:53,911 INFO L72 ComplementDD]: Start complementDD. Operand 56 states and 472 transitions. [2023-11-29 06:34:53,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 472 transitions. [2023-11-29 06:34:53,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:34:53,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 56 states and 472 transitions. [2023-11-29 06:34:53,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 57 states, 56 states have (on average 8.428571428571429) internal successors, (472), 56 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:53,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 57 states, 57 states have (on average 33.0) internal successors, (1881), 57 states have internal predecessors, (1881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:53,914 INFO L81 ComplementDD]: Finished complementDD. Result has 57 states, 57 states have (on average 33.0) internal successors, (1881), 57 states have internal predecessors, (1881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:34:53,914 INFO L175 Difference]: Start difference. First operand has 614 places, 3887 transitions, 146879 flow. Second operand 56 states and 472 transitions. [2023-11-29 06:34:53,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 669 places, 4458 transitions, 173841 flow [2023-11-29 06:35:19,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 666 places, 4458 transitions, 173791 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-11-29 06:35:19,173 INFO L231 Difference]: Finished difference. Result has 680 places, 4190 transitions, 168301 flow [2023-11-29 06:35:19,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=146829, PETRI_DIFFERENCE_MINUEND_PLACES=611, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3887, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3394, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=56, PETRI_FLOW=168301, PETRI_PLACES=680, PETRI_TRANSITIONS=4190} [2023-11-29 06:35:19,177 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 646 predicate places. [2023-11-29 06:35:19,177 INFO L495 AbstractCegarLoop]: Abstraction has has 680 places, 4190 transitions, 168301 flow [2023-11-29 06:35:19,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.862068965517241) internal successors, (170), 29 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:35:19,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:35:19,177 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:35:19,181 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-29 06:35:19,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2023-11-29 06:35:19,378 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-29 06:35:19,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:35:19,378 INFO L85 PathProgramCache]: Analyzing trace with hash 123781061, now seen corresponding path program 10 times [2023-11-29 06:35:19,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:35:19,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690643947] [2023-11-29 06:35:19,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:35:19,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:35:19,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:19,513 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:35:19,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:35:19,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690643947] [2023-11-29 06:35:19,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690643947] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:35:19,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454270738] [2023-11-29 06:35:19,514 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 06:35:19,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:35:19,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:35:19,515 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:35:19,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 06:35:19,591 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 06:35:19,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:35:19,593 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 06:35:19,593 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:35:19,807 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:35:19,807 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:35:20,007 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:35:20,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454270738] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:35:20,008 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:35:20,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 36 [2023-11-29 06:35:20,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624258794] [2023-11-29 06:35:20,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:35:20,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-11-29 06:35:20,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:35:20,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-11-29 06:35:20,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1237, Unknown=0, NotChecked=0, Total=1406 [2023-11-29 06:35:20,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2023-11-29 06:35:20,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 680 places, 4190 transitions, 168301 flow. Second operand has 38 states, 38 states have (on average 5.421052631578948) internal successors, (206), 38 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:35:20,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:35:20,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2023-11-29 06:35:20,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:35:44,288 INFO L124 PetriNetUnfolderBase]: 10360/21085 cut-off events. [2023-11-29 06:35:44,288 INFO L125 PetriNetUnfolderBase]: For 1080885/1080885 co-relation queries the response was YES. [2023-11-29 06:35:44,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265832 conditions, 21085 events. 10360/21085 cut-off events. For 1080885/1080885 co-relation queries the response was YES. Maximal size of possible extension queue 982. Compared 194863 event pairs, 1052 based on Foata normal form. 24/21109 useless extension candidates. Maximal degree in co-relation 265727. Up to 7734 conditions per place. [2023-11-29 06:35:44,693 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 683 selfloop transitions, 3597 changer transitions 113/4395 dead transitions. [2023-11-29 06:35:44,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 723 places, 4395 transitions, 179687 flow [2023-11-29 06:35:44,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-11-29 06:35:44,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2023-11-29 06:35:44,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 486 transitions. [2023-11-29 06:35:44,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.25391849529780564 [2023-11-29 06:35:44,695 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 486 transitions. [2023-11-29 06:35:44,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 486 transitions. [2023-11-29 06:35:44,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:35:44,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 486 transitions. [2023-11-29 06:35:44,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 8.379310344827585) internal successors, (486), 58 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:35:44,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 33.0) internal successors, (1947), 59 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:35:44,699 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 33.0) internal successors, (1947), 59 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:35:44,699 INFO L175 Difference]: Start difference. First operand has 680 places, 4190 transitions, 168301 flow. Second operand 58 states and 486 transitions. [2023-11-29 06:35:44,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 723 places, 4395 transitions, 179687 flow [2023-11-29 06:36:06,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 703 places, 4395 transitions, 179371 flow, removed 70 selfloop flow, removed 20 redundant places. [2023-11-29 06:36:06,395 INFO L231 Difference]: Finished difference. Result has 713 places, 4184 transitions, 175694 flow [2023-11-29 06:36:06,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=167991, PETRI_DIFFERENCE_MINUEND_PLACES=646, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3592, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=596, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=175694, PETRI_PLACES=713, PETRI_TRANSITIONS=4184} [2023-11-29 06:36:06,398 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 679 predicate places. [2023-11-29 06:36:06,398 INFO L495 AbstractCegarLoop]: Abstraction has has 713 places, 4184 transitions, 175694 flow [2023-11-29 06:36:06,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 5.421052631578948) internal successors, (206), 38 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:36:06,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:36:06,399 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:36:06,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-29 06:36:06,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:36:06,599 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-29 06:36:06,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:36:06,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1339586800, now seen corresponding path program 11 times [2023-11-29 06:36:06,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:36:06,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67064179] [2023-11-29 06:36:06,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:36:06,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:36:06,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:36:06,682 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:36:06,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:36:06,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67064179] [2023-11-29 06:36:06,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67064179] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:36:06,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846280987] [2023-11-29 06:36:06,683 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 06:36:06,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:36:06,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:36:06,684 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:36:06,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 06:36:06,749 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-11-29 06:36:06,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:36:06,749 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 06:36:06,750 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:36:06,786 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:36:06,786 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:36:06,864 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:36:06,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846280987] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:36:06,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:36:06,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 17 [2023-11-29 06:36:06,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346439255] [2023-11-29 06:36:06,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:36:06,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 06:36:06,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:36:06,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 06:36:06,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2023-11-29 06:36:06,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2023-11-29 06:36:06,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 713 places, 4184 transitions, 175694 flow. Second operand has 17 states, 17 states have (on average 5.882352941176471) internal successors, (100), 17 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:36:06,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:36:06,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2023-11-29 06:36:06,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:36:32,687 INFO L124 PetriNetUnfolderBase]: 11234/22667 cut-off events. [2023-11-29 06:36:32,687 INFO L125 PetriNetUnfolderBase]: For 1308676/1308680 co-relation queries the response was YES. [2023-11-29 06:36:32,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 297878 conditions, 22667 events. 11234/22667 cut-off events. For 1308676/1308680 co-relation queries the response was YES. Maximal size of possible extension queue 1004. Compared 210785 event pairs, 1038 based on Foata normal form. 140/22807 useless extension candidates. Maximal degree in co-relation 297769. Up to 4128 conditions per place. [2023-11-29 06:36:33,065 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 2034 selfloop transitions, 2746 changer transitions 0/4782 dead transitions. [2023-11-29 06:36:33,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 733 places, 4782 transitions, 207648 flow [2023-11-29 06:36:33,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-29 06:36:33,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-11-29 06:36:33,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 330 transitions. [2023-11-29 06:36:33,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2857142857142857 [2023-11-29 06:36:33,067 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 330 transitions. [2023-11-29 06:36:33,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 330 transitions. [2023-11-29 06:36:33,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:36:33,067 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 330 transitions. [2023-11-29 06:36:33,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 9.428571428571429) internal successors, (330), 35 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:36:33,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 33.0) internal successors, (1188), 36 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:36:33,068 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 33.0) internal successors, (1188), 36 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:36:33,068 INFO L175 Difference]: Start difference. First operand has 713 places, 4184 transitions, 175694 flow. Second operand 35 states and 330 transitions. [2023-11-29 06:36:33,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 733 places, 4782 transitions, 207648 flow [2023-11-29 06:36:56,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 688 places, 4782 transitions, 199763 flow, removed 26 selfloop flow, removed 45 redundant places. [2023-11-29 06:36:56,995 INFO L231 Difference]: Finished difference. Result has 706 places, 4504 transitions, 192343 flow [2023-11-29 06:36:56,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=168595, PETRI_DIFFERENCE_MINUEND_PLACES=654, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2446, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1618, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=192343, PETRI_PLACES=706, PETRI_TRANSITIONS=4504} [2023-11-29 06:36:57,000 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 672 predicate places. [2023-11-29 06:36:57,000 INFO L495 AbstractCegarLoop]: Abstraction has has 706 places, 4504 transitions, 192343 flow [2023-11-29 06:36:57,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.882352941176471) internal successors, (100), 17 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:36:57,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:36:57,000 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:36:57,005 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-11-29 06:36:57,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:36:57,201 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-29 06:36:57,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:36:57,201 INFO L85 PathProgramCache]: Analyzing trace with hash 826940206, now seen corresponding path program 12 times [2023-11-29 06:36:57,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:36:57,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335195028] [2023-11-29 06:36:57,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:36:57,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:36:57,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:36:57,271 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:36:57,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:36:57,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335195028] [2023-11-29 06:36:57,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335195028] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:36:57,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211568882] [2023-11-29 06:36:57,272 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 06:36:57,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:36:57,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:36:57,273 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:36:57,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-29 06:36:57,345 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-11-29 06:36:57,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:36:57,346 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 06:36:57,347 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:36:57,568 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:36:57,569 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:36:57,800 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:36:57,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211568882] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:36:57,800 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:36:57,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 35 [2023-11-29 06:36:57,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016640487] [2023-11-29 06:36:57,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:36:57,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-11-29 06:36:57,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:36:57,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-11-29 06:36:57,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1061, Unknown=0, NotChecked=0, Total=1190 [2023-11-29 06:36:57,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2023-11-29 06:36:57,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 706 places, 4504 transitions, 192343 flow. Second operand has 35 states, 35 states have (on average 5.542857142857143) internal successors, (194), 35 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:36:57,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:36:57,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2023-11-29 06:36:57,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:37:33,414 INFO L124 PetriNetUnfolderBase]: 13291/26834 cut-off events. [2023-11-29 06:37:33,414 INFO L125 PetriNetUnfolderBase]: For 1747545/1747545 co-relation queries the response was YES. [2023-11-29 06:37:33,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 363032 conditions, 26834 events. 13291/26834 cut-off events. For 1747545/1747545 co-relation queries the response was YES. Maximal size of possible extension queue 1155. Compared 254869 event pairs, 1096 based on Foata normal form. 162/26995 useless extension candidates. Maximal degree in co-relation 362910. Up to 4928 conditions per place. [2023-11-29 06:37:34,002 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 662 selfloop transitions, 4377 changer transitions 348/5389 dead transitions. [2023-11-29 06:37:34,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 765 places, 5389 transitions, 237309 flow [2023-11-29 06:37:34,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-11-29 06:37:34,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2023-11-29 06:37:34,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 522 transitions. [2023-11-29 06:37:34,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2593144560357675 [2023-11-29 06:37:34,004 INFO L72 ComplementDD]: Start complementDD. Operand 61 states and 522 transitions. [2023-11-29 06:37:34,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 522 transitions. [2023-11-29 06:37:34,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:37:34,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 61 states and 522 transitions. [2023-11-29 06:37:34,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 62 states, 61 states have (on average 8.557377049180328) internal successors, (522), 61 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:37:34,007 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 62 states, 62 states have (on average 33.0) internal successors, (2046), 62 states have internal predecessors, (2046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:37:34,007 INFO L81 ComplementDD]: Finished complementDD. Result has 62 states, 62 states have (on average 33.0) internal successors, (2046), 62 states have internal predecessors, (2046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:37:34,007 INFO L175 Difference]: Start difference. First operand has 706 places, 4504 transitions, 192343 flow. Second operand 61 states and 522 transitions. [2023-11-29 06:37:34,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 765 places, 5389 transitions, 237309 flow [2023-11-29 06:38:15,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 754 places, 5389 transitions, 227466 flow, removed 54 selfloop flow, removed 11 redundant places. [2023-11-29 06:38:15,647 INFO L231 Difference]: Finished difference. Result has 768 places, 4900 transitions, 215012 flow [2023-11-29 06:38:15,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=183950, PETRI_DIFFERENCE_MINUEND_PLACES=694, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3750, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=638, PETRI_DIFFERENCE_SUBTRAHEND_STATES=61, PETRI_FLOW=215012, PETRI_PLACES=768, PETRI_TRANSITIONS=4900} [2023-11-29 06:38:15,650 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 734 predicate places. [2023-11-29 06:38:15,650 INFO L495 AbstractCegarLoop]: Abstraction has has 768 places, 4900 transitions, 215012 flow [2023-11-29 06:38:15,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 5.542857142857143) internal successors, (194), 35 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:38:15,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:38:15,650 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:38:15,654 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-11-29 06:38:15,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:38:15,851 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-29 06:38:15,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:38:15,851 INFO L85 PathProgramCache]: Analyzing trace with hash 475098590, now seen corresponding path program 13 times [2023-11-29 06:38:15,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:38:15,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989590482] [2023-11-29 06:38:15,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:38:15,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:38:15,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:38:15,945 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:38:15,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:38:15,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989590482] [2023-11-29 06:38:15,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989590482] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:38:15,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629393698] [2023-11-29 06:38:15,946 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 06:38:15,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:38:15,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:38:15,947 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:38:15,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-29 06:38:16,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:38:16,026 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 06:38:16,027 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:38:16,053 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:38:16,053 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:38:16,176 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:38:16,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629393698] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:38:16,176 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:38:16,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 18 [2023-11-29 06:38:16,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476944952] [2023-11-29 06:38:16,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:38:16,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 06:38:16,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:38:16,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 06:38:16,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2023-11-29 06:38:16,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2023-11-29 06:38:16,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 768 places, 4900 transitions, 215012 flow. Second operand has 18 states, 18 states have (on average 5.555555555555555) internal successors, (100), 18 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:38:16,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:38:16,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2023-11-29 06:38:16,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:38:52,824 INFO L124 PetriNetUnfolderBase]: 15228/30273 cut-off events. [2023-11-29 06:38:52,824 INFO L125 PetriNetUnfolderBase]: For 1915147/1915147 co-relation queries the response was YES. [2023-11-29 06:38:53,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 421515 conditions, 30273 events. 15228/30273 cut-off events. For 1915147/1915147 co-relation queries the response was YES. Maximal size of possible extension queue 1298. Compared 288508 event pairs, 355 based on Foata normal form. 126/30399 useless extension candidates. Maximal degree in co-relation 421384. Up to 9620 conditions per place. [2023-11-29 06:38:53,490 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 891 selfloop transitions, 5222 changer transitions 0/6115 dead transitions. [2023-11-29 06:38:53,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 740 places, 6115 transitions, 278593 flow [2023-11-29 06:38:53,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-29 06:38:53,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-11-29 06:38:53,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 233 transitions. [2023-11-29 06:38:53,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2824242424242424 [2023-11-29 06:38:53,491 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 233 transitions. [2023-11-29 06:38:53,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 233 transitions. [2023-11-29 06:38:53,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:38:53,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 233 transitions. [2023-11-29 06:38:53,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 9.32) internal successors, (233), 25 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:38:53,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 33.0) internal successors, (858), 26 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:38:53,492 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 33.0) internal successors, (858), 26 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:38:53,492 INFO L175 Difference]: Start difference. First operand has 768 places, 4900 transitions, 215012 flow. Second operand 25 states and 233 transitions. [2023-11-29 06:38:53,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 740 places, 6115 transitions, 278593 flow [2023-11-29 06:39:45,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 681 places, 6115 transitions, 266467 flow, removed 124 selfloop flow, removed 59 redundant places. [2023-11-29 06:39:46,033 INFO L231 Difference]: Finished difference. Result has 684 places, 5904 transitions, 265889 flow [2023-11-29 06:39:46,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=204914, PETRI_DIFFERENCE_MINUEND_PLACES=657, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4900, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4218, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=265889, PETRI_PLACES=684, PETRI_TRANSITIONS=5904} [2023-11-29 06:39:46,036 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 650 predicate places. [2023-11-29 06:39:46,037 INFO L495 AbstractCegarLoop]: Abstraction has has 684 places, 5904 transitions, 265889 flow [2023-11-29 06:39:46,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.555555555555555) internal successors, (100), 18 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:46,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:39:46,037 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:39:46,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-11-29 06:39:46,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2023-11-29 06:39:46,237 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-29 06:39:46,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:39:46,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1186538378, now seen corresponding path program 14 times [2023-11-29 06:39:46,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:39:46,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715326598] [2023-11-29 06:39:46,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:39:46,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:39:46,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:39:46,401 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:46,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:39:46,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715326598] [2023-11-29 06:39:46,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715326598] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:39:46,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865274396] [2023-11-29 06:39:46,402 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 06:39:46,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:39:46,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:39:46,402 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:39:46,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7528ece6-5978-479a-84df-5be2040eb680/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-29 06:39:46,466 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 06:39:46,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:39:46,467 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 06:39:46,468 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:39:46,763 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:46,763 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:39:47,024 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:39:47,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1865274396] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:39:47,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:39:47,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 14] total 41 [2023-11-29 06:39:47,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307192670] [2023-11-29 06:39:47,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:39:47,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-11-29 06:39:47,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:39:47,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-11-29 06:39:47,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1489, Unknown=0, NotChecked=0, Total=1640 [2023-11-29 06:39:47,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2023-11-29 06:39:47,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 684 places, 5904 transitions, 265889 flow. Second operand has 41 states, 41 states have (on average 5.463414634146342) internal successors, (224), 41 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:39:47,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:39:47,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2023-11-29 06:39:47,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:41:13,850 INFO L124 PetriNetUnfolderBase]: 27782/55537 cut-off events. [2023-11-29 06:41:13,850 INFO L125 PetriNetUnfolderBase]: For 4072108/4072112 co-relation queries the response was YES. [2023-11-29 06:41:14,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 769928 conditions, 55537 events. 27782/55537 cut-off events. For 4072108/4072112 co-relation queries the response was YES. Maximal size of possible extension queue 2416. Compared 575602 event pairs, 486 based on Foata normal form. 280/55817 useless extension candidates. Maximal degree in co-relation 769827. Up to 10558 conditions per place. [2023-11-29 06:41:14,998 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 409 selfloop transitions, 8340 changer transitions 1571/10322 dead transitions. [2023-11-29 06:41:14,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 819 places, 10322 transitions, 478026 flow [2023-11-29 06:41:14,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2023-11-29 06:41:14,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2023-11-29 06:41:15,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 1076 transitions. [2023-11-29 06:41:15,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.23975044563279857 [2023-11-29 06:41:15,002 INFO L72 ComplementDD]: Start complementDD. Operand 136 states and 1076 transitions. [2023-11-29 06:41:15,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 136 states and 1076 transitions. [2023-11-29 06:41:15,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:41:15,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 136 states and 1076 transitions. [2023-11-29 06:41:15,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 137 states, 136 states have (on average 7.911764705882353) internal successors, (1076), 136 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:41:15,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 137 states, 137 states have (on average 33.0) internal successors, (4521), 137 states have internal predecessors, (4521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:41:15,009 INFO L81 ComplementDD]: Finished complementDD. Result has 137 states, 137 states have (on average 33.0) internal successors, (4521), 137 states have internal predecessors, (4521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:41:15,009 INFO L175 Difference]: Start difference. First operand has 684 places, 5904 transitions, 265889 flow. Second operand 136 states and 1076 transitions. [2023-11-29 06:41:15,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 819 places, 10322 transitions, 478026 flow