./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 e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/test-easy11.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a686a41ee4cc6bbffea13719827ccaf379a83824b0020cd9f2e7eecebabb9242 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:44:30,251 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:44:30,375 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 22:44:30,383 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:44:30,384 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:44:30,435 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:44:30,436 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:44:30,437 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:44:30,438 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:44:30,438 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:44:30,439 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:44:30,440 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:44:30,440 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:44:30,441 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:44:30,442 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:44:30,442 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:44:30,443 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:44:30,443 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:44:30,444 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:44:30,444 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:44:30,445 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:44:30,445 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:44:30,446 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 22:44:30,446 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:44:30,447 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:44:30,447 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:44:30,447 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:44:30,448 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:44:30,448 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:44:30,449 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:44:30,449 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:44:30,450 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:44:30,450 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:44:30,450 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:44:30,450 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:44:30,451 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:44:30,451 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:44:30,451 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:44:30,452 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:44:30,452 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:44:30,452 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:44:30,453 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_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a686a41ee4cc6bbffea13719827ccaf379a83824b0020cd9f2e7eecebabb9242 [2023-11-06 22:44:30,743 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:44:30,777 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:44:30,780 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:44:30,781 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:44:30,782 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:44:30,783 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/test-easy11.wvr.c [2023-11-06 22:44:33,870 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:44:34,098 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:44:34,098 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/sv-benchmarks/c/weaver/test-easy11.wvr.c [2023-11-06 22:44:34,115 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP/data/ca61c21f2/e539f25706144cc79e4c39b65c4ea082/FLAGfb561b3c9 [2023-11-06 22:44:34,137 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP/data/ca61c21f2/e539f25706144cc79e4c39b65c4ea082 [2023-11-06 22:44:34,147 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:44:34,150 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:44:34,154 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:44:34,154 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:44:34,160 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:44:34,161 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:44:34" (1/1) ... [2023-11-06 22:44:34,162 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d6d0f27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:34, skipping insertion in model container [2023-11-06 22:44:34,163 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:44:34" (1/1) ... [2023-11-06 22:44:34,192 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:44:34,399 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:44:34,410 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:44:34,430 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:44:34,438 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:44:34,439 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:44:34,447 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:44:34,448 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:34 WrapperNode [2023-11-06 22:44:34,448 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:44:34,449 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:44:34,450 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:44:34,450 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:44:34,458 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:34" (1/1) ... [2023-11-06 22:44:34,466 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:34" (1/1) ... [2023-11-06 22:44:34,492 INFO L138 Inliner]: procedures = 21, calls = 25, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 55 [2023-11-06 22:44:34,493 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:44:34,494 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:44:34,494 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:44:34,495 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:44:34,506 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:34" (1/1) ... [2023-11-06 22:44:34,506 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:34" (1/1) ... [2023-11-06 22:44:34,509 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:34" (1/1) ... [2023-11-06 22:44:34,510 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:34" (1/1) ... [2023-11-06 22:44:34,514 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:34" (1/1) ... [2023-11-06 22:44:34,518 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:34" (1/1) ... [2023-11-06 22:44:34,521 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:34" (1/1) ... [2023-11-06 22:44:34,522 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:34" (1/1) ... [2023-11-06 22:44:34,529 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:44:34,530 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:44:34,539 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:44:34,539 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:44:34,540 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:34" (1/1) ... [2023-11-06 22:44:34,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:44:34,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:34,583 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:44:34,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:44:34,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:44:34,632 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 22:44:34,632 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 22:44:34,632 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 22:44:34,632 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 22:44:34,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:44:34,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:44:34,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:44:34,633 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 22:44:34,633 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 22:44:34,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:44:34,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:44:34,636 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:44:34,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:44:34,638 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:44:34,799 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:44:34,801 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:44:35,045 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:44:35,079 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:44:35,080 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-06 22:44:35,082 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:44:35 BoogieIcfgContainer [2023-11-06 22:44:35,082 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:44:35,085 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:44:35,085 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:44:35,089 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:44:35,089 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:44:34" (1/3) ... [2023-11-06 22:44:35,090 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38dc775d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:44:35, skipping insertion in model container [2023-11-06 22:44:35,090 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:34" (2/3) ... [2023-11-06 22:44:35,091 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38dc775d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:44:35, skipping insertion in model container [2023-11-06 22:44:35,091 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:44:35" (3/3) ... [2023-11-06 22:44:35,093 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy11.wvr.c [2023-11-06 22:44:35,103 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:44:35,115 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:44:35,116 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-06 22:44:35,116 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:44:35,259 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-06 22:44:35,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 98 transitions, 210 flow [2023-11-06 22:44:35,359 INFO L124 PetriNetUnfolderBase]: 6/96 cut-off events. [2023-11-06 22:44:35,360 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:44:35,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 96 events. 6/96 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 101 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-11-06 22:44:35,366 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 98 transitions, 210 flow [2023-11-06 22:44:35,374 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 74 transitions, 157 flow [2023-11-06 22:44:35,378 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:44:35,389 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 74 transitions, 157 flow [2023-11-06 22:44:35,393 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 76 places, 74 transitions, 157 flow [2023-11-06 22:44:35,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 74 transitions, 157 flow [2023-11-06 22:44:35,423 INFO L124 PetriNetUnfolderBase]: 5/74 cut-off events. [2023-11-06 22:44:35,423 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:44:35,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 74 events. 5/74 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 99 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-11-06 22:44:35,426 INFO L119 LiptonReduction]: Number of co-enabled transitions 1088 [2023-11-06 22:44:38,231 INFO L134 LiptonReduction]: Checked pairs total: 1018 [2023-11-06 22:44:38,231 INFO L136 LiptonReduction]: Total number of compositions: 68 [2023-11-06 22:44:38,248 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:44:38,255 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3f292ddd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:44:38,256 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-11-06 22:44:38,259 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:44:38,259 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2023-11-06 22:44:38,260 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:44:38,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:44:38,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 22:44:38,261 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-06 22:44:38,267 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:38,267 INFO L85 PathProgramCache]: Analyzing trace with hash 11257227, now seen corresponding path program 1 times [2023-11-06 22:44:38,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:38,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838041247] [2023-11-06 22:44:38,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:38,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:38,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:38,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:38,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:38,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838041247] [2023-11-06 22:44:38,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838041247] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:38,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:38,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:44:38,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780737863] [2023-11-06 22:44:38,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:38,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:44:38,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:38,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:44:38,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:44:38,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 166 [2023-11-06 22:44:38,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 21 transitions, 51 flow. Second operand has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:38,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:44:38,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 166 [2023-11-06 22:44:38,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:44:38,798 INFO L124 PetriNetUnfolderBase]: 84/151 cut-off events. [2023-11-06 22:44:38,798 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2023-11-06 22:44:38,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 322 conditions, 151 events. 84/151 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 490 event pairs, 7 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 272. Up to 78 conditions per place. [2023-11-06 22:44:38,802 INFO L140 encePairwiseOnDemand]: 157/166 looper letters, 32 selfloop transitions, 5 changer transitions 2/39 dead transitions. [2023-11-06 22:44:38,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 39 transitions, 171 flow [2023-11-06 22:44:38,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:44:38,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:44:38,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 360 transitions. [2023-11-06 22:44:38,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5421686746987951 [2023-11-06 22:44:38,824 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 360 transitions. [2023-11-06 22:44:38,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 360 transitions. [2023-11-06 22:44:38,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:44:38,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 360 transitions. [2023-11-06 22:44:38,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:38,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 166.0) internal successors, (830), 5 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:38,844 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 166.0) internal successors, (830), 5 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:38,846 INFO L175 Difference]: Start difference. First operand has 26 places, 21 transitions, 51 flow. Second operand 4 states and 360 transitions. [2023-11-06 22:44:38,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 39 transitions, 171 flow [2023-11-06 22:44:38,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 39 transitions, 164 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 22:44:38,853 INFO L231 Difference]: Finished difference. Result has 26 places, 21 transitions, 72 flow [2023-11-06 22:44:38,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=72, PETRI_PLACES=26, PETRI_TRANSITIONS=21} [2023-11-06 22:44:38,861 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 0 predicate places. [2023-11-06 22:44:38,861 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 21 transitions, 72 flow [2023-11-06 22:44:38,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:38,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:44:38,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 22:44:38,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:44:38,863 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-06 22:44:38,863 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:38,864 INFO L85 PathProgramCache]: Analyzing trace with hash 11257221, now seen corresponding path program 1 times [2023-11-06 22:44:38,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:38,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763319535] [2023-11-06 22:44:38,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:38,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:38,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:38,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:38,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:38,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763319535] [2023-11-06 22:44:38,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763319535] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:38,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:38,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:44:38,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929787514] [2023-11-06 22:44:38,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:38,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:44:38,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:38,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:44:38,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:44:38,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 166 [2023-11-06 22:44:38,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 21 transitions, 72 flow. Second operand has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:38,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:44:38,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 166 [2023-11-06 22:44:38,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:44:39,104 INFO L124 PetriNetUnfolderBase]: 62/113 cut-off events. [2023-11-06 22:44:39,105 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2023-11-06 22:44:39,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 301 conditions, 113 events. 62/113 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 318 event pairs, 6 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 252. Up to 94 conditions per place. [2023-11-06 22:44:39,112 INFO L140 encePairwiseOnDemand]: 163/166 looper letters, 24 selfloop transitions, 3 changer transitions 0/27 dead transitions. [2023-11-06 22:44:39,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 27 transitions, 140 flow [2023-11-06 22:44:39,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:44:39,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:44:39,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 343 transitions. [2023-11-06 22:44:39,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.516566265060241 [2023-11-06 22:44:39,122 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 343 transitions. [2023-11-06 22:44:39,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 343 transitions. [2023-11-06 22:44:39,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:44:39,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 343 transitions. [2023-11-06 22:44:39,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:39,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 166.0) internal successors, (830), 5 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:39,128 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 166.0) internal successors, (830), 5 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:39,128 INFO L175 Difference]: Start difference. First operand has 26 places, 21 transitions, 72 flow. Second operand 4 states and 343 transitions. [2023-11-06 22:44:39,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 27 transitions, 140 flow [2023-11-06 22:44:39,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 27 transitions, 136 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:44:39,131 INFO L231 Difference]: Finished difference. Result has 27 places, 20 transitions, 72 flow [2023-11-06 22:44:39,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=72, PETRI_PLACES=27, PETRI_TRANSITIONS=20} [2023-11-06 22:44:39,132 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 1 predicate places. [2023-11-06 22:44:39,132 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 20 transitions, 72 flow [2023-11-06 22:44:39,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:39,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:44:39,133 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:44:39,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:44:39,134 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-06 22:44:39,134 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:39,135 INFO L85 PathProgramCache]: Analyzing trace with hash -2065169636, now seen corresponding path program 1 times [2023-11-06 22:44:39,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:39,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982427031] [2023-11-06 22:44:39,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:39,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:39,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:39,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:39,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:39,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982427031] [2023-11-06 22:44:39,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982427031] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:39,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:39,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:44:39,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617008025] [2023-11-06 22:44:39,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:39,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:44:39,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:39,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:44:39,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:44:39,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 166 [2023-11-06 22:44:39,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 20 transitions, 72 flow. Second operand has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:39,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:44:39,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 166 [2023-11-06 22:44:39,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:44:39,426 INFO L124 PetriNetUnfolderBase]: 51/94 cut-off events. [2023-11-06 22:44:39,426 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2023-11-06 22:44:39,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254 conditions, 94 events. 51/94 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 221 event pairs, 6 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 153. Up to 69 conditions per place. [2023-11-06 22:44:39,428 INFO L140 encePairwiseOnDemand]: 163/166 looper letters, 23 selfloop transitions, 2 changer transitions 0/25 dead transitions. [2023-11-06 22:44:39,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 25 transitions, 141 flow [2023-11-06 22:44:39,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:44:39,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:44:39,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 340 transitions. [2023-11-06 22:44:39,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5120481927710844 [2023-11-06 22:44:39,431 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 340 transitions. [2023-11-06 22:44:39,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 340 transitions. [2023-11-06 22:44:39,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:44:39,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 340 transitions. [2023-11-06 22:44:39,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:39,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 166.0) internal successors, (830), 5 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:39,436 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 166.0) internal successors, (830), 5 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:39,436 INFO L175 Difference]: Start difference. First operand has 27 places, 20 transitions, 72 flow. Second operand 4 states and 340 transitions. [2023-11-06 22:44:39,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 25 transitions, 141 flow [2023-11-06 22:44:39,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 25 transitions, 136 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:44:39,439 INFO L231 Difference]: Finished difference. Result has 27 places, 19 transitions, 70 flow [2023-11-06 22:44:39,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=70, PETRI_PLACES=27, PETRI_TRANSITIONS=19} [2023-11-06 22:44:39,440 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 1 predicate places. [2023-11-06 22:44:39,440 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 19 transitions, 70 flow [2023-11-06 22:44:39,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:39,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:44:39,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:44:39,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:44:39,442 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-06 22:44:39,442 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:39,443 INFO L85 PathProgramCache]: Analyzing trace with hash -2065169628, now seen corresponding path program 1 times [2023-11-06 22:44:39,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:39,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130074293] [2023-11-06 22:44:39,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:39,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:39,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:39,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:39,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:39,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130074293] [2023-11-06 22:44:39,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130074293] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:39,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:39,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:44:39,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968415340] [2023-11-06 22:44:39,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:39,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:44:39,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:39,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:44:39,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:44:39,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 166 [2023-11-06 22:44:39,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 19 transitions, 70 flow. Second operand has 4 states, 4 states have (on average 79.5) internal successors, (318), 4 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:39,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:44:39,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 166 [2023-11-06 22:44:39,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:44:39,665 INFO L124 PetriNetUnfolderBase]: 43/82 cut-off events. [2023-11-06 22:44:39,665 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2023-11-06 22:44:39,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 82 events. 43/82 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 181 event pairs, 9 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 152. Up to 53 conditions per place. [2023-11-06 22:44:39,668 INFO L140 encePairwiseOnDemand]: 161/166 looper letters, 23 selfloop transitions, 6 changer transitions 0/29 dead transitions. [2023-11-06 22:44:39,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 29 transitions, 159 flow [2023-11-06 22:44:39,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:44:39,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:44:39,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 341 transitions. [2023-11-06 22:44:39,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135542168674698 [2023-11-06 22:44:39,671 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 341 transitions. [2023-11-06 22:44:39,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 341 transitions. [2023-11-06 22:44:39,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:44:39,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 341 transitions. [2023-11-06 22:44:39,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 85.25) internal successors, (341), 4 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:39,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 166.0) internal successors, (830), 5 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:39,676 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 166.0) internal successors, (830), 5 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:39,676 INFO L175 Difference]: Start difference. First operand has 27 places, 19 transitions, 70 flow. Second operand 4 states and 341 transitions. [2023-11-06 22:44:39,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 29 transitions, 159 flow [2023-11-06 22:44:39,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 29 transitions, 155 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:44:39,680 INFO L231 Difference]: Finished difference. Result has 30 places, 21 transitions, 97 flow [2023-11-06 22:44:39,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=97, PETRI_PLACES=30, PETRI_TRANSITIONS=21} [2023-11-06 22:44:39,682 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 4 predicate places. [2023-11-06 22:44:39,683 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 21 transitions, 97 flow [2023-11-06 22:44:39,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.5) internal successors, (318), 4 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:39,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:44:39,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:39,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:44:39,684 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-06 22:44:39,685 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:39,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1819208467, now seen corresponding path program 1 times [2023-11-06 22:44:39,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:39,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756272857] [2023-11-06 22:44:39,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:39,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:39,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:39,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:39,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:39,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756272857] [2023-11-06 22:44:39,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756272857] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:39,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:39,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:44:39,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341669992] [2023-11-06 22:44:39,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:39,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:44:39,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:39,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:44:39,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:44:39,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 166 [2023-11-06 22:44:39,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 21 transitions, 97 flow. Second operand has 6 states, 6 states have (on average 72.33333333333333) internal successors, (434), 6 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:39,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:44:39,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 166 [2023-11-06 22:44:39,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:44:40,105 INFO L124 PetriNetUnfolderBase]: 50/93 cut-off events. [2023-11-06 22:44:40,105 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2023-11-06 22:44:40,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 298 conditions, 93 events. 50/93 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 218 event pairs, 2 based on Foata normal form. 4/95 useless extension candidates. Maximal degree in co-relation 242. Up to 29 conditions per place. [2023-11-06 22:44:40,107 INFO L140 encePairwiseOnDemand]: 158/166 looper letters, 29 selfloop transitions, 12 changer transitions 0/41 dead transitions. [2023-11-06 22:44:40,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 41 transitions, 238 flow [2023-11-06 22:44:40,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:44:40,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 22:44:40,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 610 transitions. [2023-11-06 22:44:40,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45933734939759036 [2023-11-06 22:44:40,111 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 610 transitions. [2023-11-06 22:44:40,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 610 transitions. [2023-11-06 22:44:40,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:44:40,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 610 transitions. [2023-11-06 22:44:40,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 76.25) internal successors, (610), 8 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:40,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 166.0) internal successors, (1494), 9 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:40,120 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 166.0) internal successors, (1494), 9 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:40,120 INFO L175 Difference]: Start difference. First operand has 30 places, 21 transitions, 97 flow. Second operand 8 states and 610 transitions. [2023-11-06 22:44:40,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 41 transitions, 238 flow [2023-11-06 22:44:40,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 41 transitions, 233 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:44:40,125 INFO L231 Difference]: Finished difference. Result has 38 places, 25 transitions, 152 flow [2023-11-06 22:44:40,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=152, PETRI_PLACES=38, PETRI_TRANSITIONS=25} [2023-11-06 22:44:40,128 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 12 predicate places. [2023-11-06 22:44:40,129 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 25 transitions, 152 flow [2023-11-06 22:44:40,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.33333333333333) internal successors, (434), 6 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:40,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:44:40,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:40,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:44:40,130 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-06 22:44:40,131 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:40,131 INFO L85 PathProgramCache]: Analyzing trace with hash -353532188, now seen corresponding path program 1 times [2023-11-06 22:44:40,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:40,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016628978] [2023-11-06 22:44:40,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:40,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:40,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:40,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:40,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:40,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016628978] [2023-11-06 22:44:40,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016628978] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:40,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:40,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:44:40,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192401529] [2023-11-06 22:44:40,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:40,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:44:40,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:40,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:44:40,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:44:40,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 166 [2023-11-06 22:44:40,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 25 transitions, 152 flow. Second operand has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:40,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:44:40,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 166 [2023-11-06 22:44:40,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:44:40,308 INFO L124 PetriNetUnfolderBase]: 42/79 cut-off events. [2023-11-06 22:44:40,309 INFO L125 PetriNetUnfolderBase]: For 156/156 co-relation queries the response was YES. [2023-11-06 22:44:40,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293 conditions, 79 events. 42/79 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 163 event pairs, 9 based on Foata normal form. 8/87 useless extension candidates. Maximal degree in co-relation 192. Up to 49 conditions per place. [2023-11-06 22:44:40,310 INFO L140 encePairwiseOnDemand]: 161/166 looper letters, 22 selfloop transitions, 5 changer transitions 0/27 dead transitions. [2023-11-06 22:44:40,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 27 transitions, 198 flow [2023-11-06 22:44:40,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:44:40,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:44:40,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 360 transitions. [2023-11-06 22:44:40,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5421686746987951 [2023-11-06 22:44:40,313 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 360 transitions. [2023-11-06 22:44:40,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 360 transitions. [2023-11-06 22:44:40,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:44:40,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 360 transitions. [2023-11-06 22:44:40,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:40,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 166.0) internal successors, (830), 5 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:40,319 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 166.0) internal successors, (830), 5 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:40,319 INFO L175 Difference]: Start difference. First operand has 38 places, 25 transitions, 152 flow. Second operand 4 states and 360 transitions. [2023-11-06 22:44:40,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 27 transitions, 198 flow [2023-11-06 22:44:40,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 27 transitions, 165 flow, removed 2 selfloop flow, removed 7 redundant places. [2023-11-06 22:44:40,325 INFO L231 Difference]: Finished difference. Result has 32 places, 22 transitions, 107 flow [2023-11-06 22:44:40,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=107, PETRI_PLACES=32, PETRI_TRANSITIONS=22} [2023-11-06 22:44:40,328 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 6 predicate places. [2023-11-06 22:44:40,332 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 22 transitions, 107 flow [2023-11-06 22:44:40,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:40,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:44:40,333 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:40,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:44:40,333 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-06 22:44:40,334 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:40,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1819249416, now seen corresponding path program 1 times [2023-11-06 22:44:40,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:40,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572484394] [2023-11-06 22:44:40,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:40,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:40,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:40,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:40,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:40,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572484394] [2023-11-06 22:44:40,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572484394] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:40,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:40,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:44:40,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840840603] [2023-11-06 22:44:40,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:40,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:44:40,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:40,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:44:40,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:44:40,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 166 [2023-11-06 22:44:40,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 107 flow. Second operand has 6 states, 6 states have (on average 73.33333333333333) internal successors, (440), 6 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:40,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:44:40,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 166 [2023-11-06 22:44:40,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:44:40,708 INFO L124 PetriNetUnfolderBase]: 50/91 cut-off events. [2023-11-06 22:44:40,708 INFO L125 PetriNetUnfolderBase]: For 46/46 co-relation queries the response was YES. [2023-11-06 22:44:40,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 91 events. 50/91 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 207 event pairs, 5 based on Foata normal form. 2/93 useless extension candidates. Maximal degree in co-relation 250. Up to 54 conditions per place. [2023-11-06 22:44:40,709 INFO L140 encePairwiseOnDemand]: 158/166 looper letters, 25 selfloop transitions, 13 changer transitions 0/38 dead transitions. [2023-11-06 22:44:40,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 38 transitions, 236 flow [2023-11-06 22:44:40,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:44:40,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:44:40,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 468 transitions. [2023-11-06 22:44:40,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46987951807228917 [2023-11-06 22:44:40,713 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 468 transitions. [2023-11-06 22:44:40,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 468 transitions. [2023-11-06 22:44:40,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:44:40,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 468 transitions. [2023-11-06 22:44:40,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 78.0) internal successors, (468), 6 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:40,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 166.0) internal successors, (1162), 7 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:40,719 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 166.0) internal successors, (1162), 7 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:40,719 INFO L175 Difference]: Start difference. First operand has 32 places, 22 transitions, 107 flow. Second operand 6 states and 468 transitions. [2023-11-06 22:44:40,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 38 transitions, 236 flow [2023-11-06 22:44:40,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 38 transitions, 228 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:44:40,722 INFO L231 Difference]: Finished difference. Result has 37 places, 27 transitions, 163 flow [2023-11-06 22:44:40,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=163, PETRI_PLACES=37, PETRI_TRANSITIONS=27} [2023-11-06 22:44:40,723 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 11 predicate places. [2023-11-06 22:44:40,723 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 27 transitions, 163 flow [2023-11-06 22:44:40,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.33333333333333) internal successors, (440), 6 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:40,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:44:40,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:40,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:44:40,724 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-06 22:44:40,725 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:40,725 INFO L85 PathProgramCache]: Analyzing trace with hash -353532187, now seen corresponding path program 2 times [2023-11-06 22:44:40,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:40,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436086131] [2023-11-06 22:44:40,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:40,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:40,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:40,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:40,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:40,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436086131] [2023-11-06 22:44:40,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436086131] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:40,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:40,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:44:40,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204969918] [2023-11-06 22:44:40,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:40,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:44:40,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:40,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:44:40,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:44:40,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 166 [2023-11-06 22:44:40,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 27 transitions, 163 flow. Second operand has 6 states, 6 states have (on average 72.33333333333333) internal successors, (434), 6 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:40,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:44:40,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 166 [2023-11-06 22:44:40,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:44:41,081 INFO L124 PetriNetUnfolderBase]: 53/98 cut-off events. [2023-11-06 22:44:41,081 INFO L125 PetriNetUnfolderBase]: For 101/101 co-relation queries the response was YES. [2023-11-06 22:44:41,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 394 conditions, 98 events. 53/98 cut-off events. For 101/101 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 234 event pairs, 4 based on Foata normal form. 4/102 useless extension candidates. Maximal degree in co-relation 328. Up to 59 conditions per place. [2023-11-06 22:44:41,082 INFO L140 encePairwiseOnDemand]: 158/166 looper letters, 30 selfloop transitions, 14 changer transitions 0/44 dead transitions. [2023-11-06 22:44:41,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 44 transitions, 310 flow [2023-11-06 22:44:41,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:44:41,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 22:44:41,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 611 transitions. [2023-11-06 22:44:41,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46009036144578314 [2023-11-06 22:44:41,087 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 611 transitions. [2023-11-06 22:44:41,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 611 transitions. [2023-11-06 22:44:41,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:44:41,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 611 transitions. [2023-11-06 22:44:41,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 76.375) internal successors, (611), 8 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:41,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 166.0) internal successors, (1494), 9 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:41,093 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 166.0) internal successors, (1494), 9 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:41,094 INFO L175 Difference]: Start difference. First operand has 37 places, 27 transitions, 163 flow. Second operand 8 states and 611 transitions. [2023-11-06 22:44:41,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 44 transitions, 310 flow [2023-11-06 22:44:41,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 44 transitions, 291 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-06 22:44:41,097 INFO L231 Difference]: Finished difference. Result has 43 places, 28 transitions, 184 flow [2023-11-06 22:44:41,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=184, PETRI_PLACES=43, PETRI_TRANSITIONS=28} [2023-11-06 22:44:41,098 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 17 predicate places. [2023-11-06 22:44:41,098 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 28 transitions, 184 flow [2023-11-06 22:44:41,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.33333333333333) internal successors, (434), 6 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:41,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:44:41,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:41,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:44:41,099 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-06 22:44:41,100 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:41,100 INFO L85 PathProgramCache]: Analyzing trace with hash -353105346, now seen corresponding path program 2 times [2023-11-06 22:44:41,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:41,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043073002] [2023-11-06 22:44:41,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:41,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:41,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:41,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:41,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:41,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043073002] [2023-11-06 22:44:41,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043073002] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:41,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:41,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:44:41,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415241334] [2023-11-06 22:44:41,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:41,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:44:41,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:41,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:44:41,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:44:41,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 166 [2023-11-06 22:44:41,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 28 transitions, 184 flow. Second operand has 6 states, 6 states have (on average 72.33333333333333) internal successors, (434), 6 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:41,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:44:41,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 166 [2023-11-06 22:44:41,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:44:41,390 INFO L124 PetriNetUnfolderBase]: 54/101 cut-off events. [2023-11-06 22:44:41,391 INFO L125 PetriNetUnfolderBase]: For 142/142 co-relation queries the response was YES. [2023-11-06 22:44:41,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 431 conditions, 101 events. 54/101 cut-off events. For 142/142 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 249 event pairs, 4 based on Foata normal form. 2/101 useless extension candidates. Maximal degree in co-relation 362. Up to 46 conditions per place. [2023-11-06 22:44:41,392 INFO L140 encePairwiseOnDemand]: 159/166 looper letters, 30 selfloop transitions, 13 changer transitions 0/43 dead transitions. [2023-11-06 22:44:41,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 43 transitions, 328 flow [2023-11-06 22:44:41,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:44:41,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 22:44:41,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 605 transitions. [2023-11-06 22:44:41,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4555722891566265 [2023-11-06 22:44:41,396 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 605 transitions. [2023-11-06 22:44:41,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 605 transitions. [2023-11-06 22:44:41,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:44:41,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 605 transitions. [2023-11-06 22:44:41,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 75.625) internal successors, (605), 8 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:41,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 166.0) internal successors, (1494), 9 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:41,403 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 166.0) internal successors, (1494), 9 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:41,403 INFO L175 Difference]: Start difference. First operand has 43 places, 28 transitions, 184 flow. Second operand 8 states and 605 transitions. [2023-11-06 22:44:41,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 43 transitions, 328 flow [2023-11-06 22:44:41,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 43 transitions, 287 flow, removed 3 selfloop flow, removed 7 redundant places. [2023-11-06 22:44:41,407 INFO L231 Difference]: Finished difference. Result has 44 places, 29 transitions, 181 flow [2023-11-06 22:44:41,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=181, PETRI_PLACES=44, PETRI_TRANSITIONS=29} [2023-11-06 22:44:41,408 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 18 predicate places. [2023-11-06 22:44:41,408 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 29 transitions, 181 flow [2023-11-06 22:44:41,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.33333333333333) internal successors, (434), 6 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:41,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:44:41,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:41,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:44:41,409 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-06 22:44:41,410 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:41,410 INFO L85 PathProgramCache]: Analyzing trace with hash -353157426, now seen corresponding path program 3 times [2023-11-06 22:44:41,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:41,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023643010] [2023-11-06 22:44:41,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:41,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:41,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:41,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:41,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:41,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023643010] [2023-11-06 22:44:41,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023643010] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:41,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:41,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:44:41,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047338686] [2023-11-06 22:44:41,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:41,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:44:41,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:41,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:44:41,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:44:41,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 166 [2023-11-06 22:44:41,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 29 transitions, 181 flow. Second operand has 6 states, 6 states have (on average 72.33333333333333) internal successors, (434), 6 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:41,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:44:41,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 166 [2023-11-06 22:44:41,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:44:41,784 INFO L124 PetriNetUnfolderBase]: 62/113 cut-off events. [2023-11-06 22:44:41,785 INFO L125 PetriNetUnfolderBase]: For 184/184 co-relation queries the response was YES. [2023-11-06 22:44:41,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 482 conditions, 113 events. 62/113 cut-off events. For 184/184 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 290 event pairs, 4 based on Foata normal form. 2/113 useless extension candidates. Maximal degree in co-relation 412. Up to 71 conditions per place. [2023-11-06 22:44:41,787 INFO L140 encePairwiseOnDemand]: 158/166 looper letters, 32 selfloop transitions, 16 changer transitions 0/48 dead transitions. [2023-11-06 22:44:41,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 48 transitions, 374 flow [2023-11-06 22:44:41,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:44:41,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 22:44:41,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 609 transitions. [2023-11-06 22:44:41,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4585843373493976 [2023-11-06 22:44:41,790 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 609 transitions. [2023-11-06 22:44:41,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 609 transitions. [2023-11-06 22:44:41,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:44:41,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 609 transitions. [2023-11-06 22:44:41,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 76.125) internal successors, (609), 8 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:41,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 166.0) internal successors, (1494), 9 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:41,797 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 166.0) internal successors, (1494), 9 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:41,797 INFO L175 Difference]: Start difference. First operand has 44 places, 29 transitions, 181 flow. Second operand 8 states and 609 transitions. [2023-11-06 22:44:41,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 48 transitions, 374 flow [2023-11-06 22:44:41,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 48 transitions, 340 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-11-06 22:44:41,800 INFO L231 Difference]: Finished difference. Result has 47 places, 34 transitions, 235 flow [2023-11-06 22:44:41,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=235, PETRI_PLACES=47, PETRI_TRANSITIONS=34} [2023-11-06 22:44:41,801 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 21 predicate places. [2023-11-06 22:44:41,801 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 34 transitions, 235 flow [2023-11-06 22:44:41,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.33333333333333) internal successors, (434), 6 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:41,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:44:41,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:41,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:44:41,802 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-06 22:44:41,803 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:41,803 INFO L85 PathProgramCache]: Analyzing trace with hash -353157397, now seen corresponding path program 3 times [2023-11-06 22:44:41,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:41,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447396122] [2023-11-06 22:44:41,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:41,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:41,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:41,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:41,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:41,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447396122] [2023-11-06 22:44:41,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447396122] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:41,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:41,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:44:41,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302195986] [2023-11-06 22:44:41,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:41,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:44:41,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:41,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:44:41,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:44:41,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 166 [2023-11-06 22:44:41,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 34 transitions, 235 flow. Second operand has 6 states, 6 states have (on average 73.33333333333333) internal successors, (440), 6 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:41,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:44:41,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 166 [2023-11-06 22:44:41,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:44:42,140 INFO L124 PetriNetUnfolderBase]: 65/120 cut-off events. [2023-11-06 22:44:42,145 INFO L125 PetriNetUnfolderBase]: For 338/338 co-relation queries the response was YES. [2023-11-06 22:44:42,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 547 conditions, 120 events. 65/120 cut-off events. For 338/338 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 315 event pairs, 9 based on Foata normal form. 4/122 useless extension candidates. Maximal degree in co-relation 433. Up to 76 conditions per place. [2023-11-06 22:44:42,147 INFO L140 encePairwiseOnDemand]: 158/166 looper letters, 31 selfloop transitions, 15 changer transitions 0/46 dead transitions. [2023-11-06 22:44:42,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 46 transitions, 390 flow [2023-11-06 22:44:42,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:44:42,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:44:42,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 468 transitions. [2023-11-06 22:44:42,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46987951807228917 [2023-11-06 22:44:42,150 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 468 transitions. [2023-11-06 22:44:42,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 468 transitions. [2023-11-06 22:44:42,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:44:42,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 468 transitions. [2023-11-06 22:44:42,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 78.0) internal successors, (468), 6 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:42,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 166.0) internal successors, (1162), 7 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:42,156 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 166.0) internal successors, (1162), 7 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:42,156 INFO L175 Difference]: Start difference. First operand has 47 places, 34 transitions, 235 flow. Second operand 6 states and 468 transitions. [2023-11-06 22:44:42,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 46 transitions, 390 flow [2023-11-06 22:44:42,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 46 transitions, 348 flow, removed 12 selfloop flow, removed 4 redundant places. [2023-11-06 22:44:42,161 INFO L231 Difference]: Finished difference. Result has 49 places, 35 transitions, 239 flow [2023-11-06 22:44:42,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=239, PETRI_PLACES=49, PETRI_TRANSITIONS=35} [2023-11-06 22:44:42,162 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 23 predicate places. [2023-11-06 22:44:42,163 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 35 transitions, 239 flow [2023-11-06 22:44:42,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.33333333333333) internal successors, (440), 6 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:42,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:44:42,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:42,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:44:42,164 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-06 22:44:42,164 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:42,164 INFO L85 PathProgramCache]: Analyzing trace with hash 2009790130, now seen corresponding path program 1 times [2023-11-06 22:44:42,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:42,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643075871] [2023-11-06 22:44:42,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:42,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:42,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:42,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:42,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:42,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643075871] [2023-11-06 22:44:42,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643075871] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:42,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:42,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:44:42,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621852045] [2023-11-06 22:44:42,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:42,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:44:42,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:42,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:44:42,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:44:42,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 166 [2023-11-06 22:44:42,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 35 transitions, 239 flow. Second operand has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:42,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:44:42,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 166 [2023-11-06 22:44:42,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:44:42,395 INFO L124 PetriNetUnfolderBase]: 102/193 cut-off events. [2023-11-06 22:44:42,395 INFO L125 PetriNetUnfolderBase]: For 618/618 co-relation queries the response was YES. [2023-11-06 22:44:42,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 876 conditions, 193 events. 102/193 cut-off events. For 618/618 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 657 event pairs, 14 based on Foata normal form. 4/191 useless extension candidates. Maximal degree in co-relation 651. Up to 78 conditions per place. [2023-11-06 22:44:42,398 INFO L140 encePairwiseOnDemand]: 158/166 looper letters, 42 selfloop transitions, 22 changer transitions 4/68 dead transitions. [2023-11-06 22:44:42,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 68 transitions, 572 flow [2023-11-06 22:44:42,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:44:42,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:44:42,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 554 transitions. [2023-11-06 22:44:42,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47676419965576594 [2023-11-06 22:44:42,402 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 554 transitions. [2023-11-06 22:44:42,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 554 transitions. [2023-11-06 22:44:42,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:44:42,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 554 transitions. [2023-11-06 22:44:42,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 79.14285714285714) internal successors, (554), 7 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:42,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 166.0) internal successors, (1328), 8 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:42,408 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 166.0) internal successors, (1328), 8 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:42,409 INFO L175 Difference]: Start difference. First operand has 49 places, 35 transitions, 239 flow. Second operand 7 states and 554 transitions. [2023-11-06 22:44:42,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 68 transitions, 572 flow [2023-11-06 22:44:42,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 68 transitions, 522 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-11-06 22:44:42,414 INFO L231 Difference]: Finished difference. Result has 55 places, 45 transitions, 378 flow [2023-11-06 22:44:42,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=378, PETRI_PLACES=55, PETRI_TRANSITIONS=45} [2023-11-06 22:44:42,415 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 29 predicate places. [2023-11-06 22:44:42,415 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 45 transitions, 378 flow [2023-11-06 22:44:42,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:42,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:44:42,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:42,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 22:44:42,416 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-06 22:44:42,417 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:42,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1925403668, now seen corresponding path program 1 times [2023-11-06 22:44:42,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:42,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960545154] [2023-11-06 22:44:42,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:42,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:42,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:42,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:42,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:42,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960545154] [2023-11-06 22:44:42,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960545154] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:42,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:42,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:44:42,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719657305] [2023-11-06 22:44:42,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:42,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:44:42,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:42,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:44:42,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:44:42,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 166 [2023-11-06 22:44:42,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 45 transitions, 378 flow. Second operand has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:42,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:44:42,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 166 [2023-11-06 22:44:42,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:44:42,655 INFO L124 PetriNetUnfolderBase]: 111/214 cut-off events. [2023-11-06 22:44:42,656 INFO L125 PetriNetUnfolderBase]: For 1010/1010 co-relation queries the response was YES. [2023-11-06 22:44:42,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1095 conditions, 214 events. 111/214 cut-off events. For 1010/1010 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 771 event pairs, 12 based on Foata normal form. 6/220 useless extension candidates. Maximal degree in co-relation 990. Up to 83 conditions per place. [2023-11-06 22:44:42,659 INFO L140 encePairwiseOnDemand]: 159/166 looper letters, 42 selfloop transitions, 19 changer transitions 2/63 dead transitions. [2023-11-06 22:44:42,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 63 transitions, 642 flow [2023-11-06 22:44:42,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:44:42,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:44:42,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 476 transitions. [2023-11-06 22:44:42,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4779116465863454 [2023-11-06 22:44:42,662 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 476 transitions. [2023-11-06 22:44:42,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 476 transitions. [2023-11-06 22:44:42,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:44:42,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 476 transitions. [2023-11-06 22:44:42,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 79.33333333333333) internal successors, (476), 6 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:42,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 166.0) internal successors, (1162), 7 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:42,667 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 166.0) internal successors, (1162), 7 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:42,667 INFO L175 Difference]: Start difference. First operand has 55 places, 45 transitions, 378 flow. Second operand 6 states and 476 transitions. [2023-11-06 22:44:42,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 63 transitions, 642 flow [2023-11-06 22:44:42,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 63 transitions, 610 flow, removed 12 selfloop flow, removed 2 redundant places. [2023-11-06 22:44:42,675 INFO L231 Difference]: Finished difference. Result has 62 places, 46 transitions, 452 flow [2023-11-06 22:44:42,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=452, PETRI_PLACES=62, PETRI_TRANSITIONS=46} [2023-11-06 22:44:42,676 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 36 predicate places. [2023-11-06 22:44:42,676 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 46 transitions, 452 flow [2023-11-06 22:44:42,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:42,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:44:42,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:42,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 22:44:42,677 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-06 22:44:42,677 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:42,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1925405650, now seen corresponding path program 2 times [2023-11-06 22:44:42,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:42,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120982857] [2023-11-06 22:44:42,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:42,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:42,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:42,720 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:42,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:42,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120982857] [2023-11-06 22:44:42,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120982857] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:42,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:42,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:44:42,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740721959] [2023-11-06 22:44:42,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:42,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:44:42,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:42,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:44:42,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:44:42,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 166 [2023-11-06 22:44:42,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 46 transitions, 452 flow. Second operand has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:42,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:44:42,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 166 [2023-11-06 22:44:42,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:44:42,916 INFO L124 PetriNetUnfolderBase]: 121/232 cut-off events. [2023-11-06 22:44:42,916 INFO L125 PetriNetUnfolderBase]: For 1683/1683 co-relation queries the response was YES. [2023-11-06 22:44:42,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1278 conditions, 232 events. 121/232 cut-off events. For 1683/1683 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 853 event pairs, 33 based on Foata normal form. 4/236 useless extension candidates. Maximal degree in co-relation 1076. Up to 133 conditions per place. [2023-11-06 22:44:42,919 INFO L140 encePairwiseOnDemand]: 160/166 looper letters, 53 selfloop transitions, 14 changer transitions 0/67 dead transitions. [2023-11-06 22:44:42,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 67 transitions, 720 flow [2023-11-06 22:44:42,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:44:42,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:44:42,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 407 transitions. [2023-11-06 22:44:42,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4903614457831325 [2023-11-06 22:44:42,922 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 407 transitions. [2023-11-06 22:44:42,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 407 transitions. [2023-11-06 22:44:42,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:44:42,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 407 transitions. [2023-11-06 22:44:42,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 81.4) internal successors, (407), 5 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:42,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 166.0) internal successors, (996), 6 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:42,928 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 166.0) internal successors, (996), 6 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:42,928 INFO L175 Difference]: Start difference. First operand has 62 places, 46 transitions, 452 flow. Second operand 5 states and 407 transitions. [2023-11-06 22:44:42,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 67 transitions, 720 flow [2023-11-06 22:44:42,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 67 transitions, 677 flow, removed 20 selfloop flow, removed 2 redundant places. [2023-11-06 22:44:42,938 INFO L231 Difference]: Finished difference. Result has 66 places, 51 transitions, 505 flow [2023-11-06 22:44:42,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=415, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=505, PETRI_PLACES=66, PETRI_TRANSITIONS=51} [2023-11-06 22:44:42,939 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 40 predicate places. [2023-11-06 22:44:42,939 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 51 transitions, 505 flow [2023-11-06 22:44:42,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:42,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:44:42,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:42,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 22:44:42,940 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-06 22:44:42,940 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:42,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1925404720, now seen corresponding path program 3 times [2023-11-06 22:44:42,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:42,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193748263] [2023-11-06 22:44:42,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:42,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:42,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:42,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:42,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:42,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193748263] [2023-11-06 22:44:42,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193748263] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:42,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:42,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:44:42,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088011112] [2023-11-06 22:44:42,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:42,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:44:42,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:42,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:44:42,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:44:43,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 166 [2023-11-06 22:44:43,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 51 transitions, 505 flow. Second operand has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:43,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:44:43,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 166 [2023-11-06 22:44:43,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:44:43,187 INFO L124 PetriNetUnfolderBase]: 113/220 cut-off events. [2023-11-06 22:44:43,187 INFO L125 PetriNetUnfolderBase]: For 1316/1316 co-relation queries the response was YES. [2023-11-06 22:44:43,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1226 conditions, 220 events. 113/220 cut-off events. For 1316/1316 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 803 event pairs, 18 based on Foata normal form. 4/224 useless extension candidates. Maximal degree in co-relation 1122. Up to 94 conditions per place. [2023-11-06 22:44:43,190 INFO L140 encePairwiseOnDemand]: 159/166 looper letters, 49 selfloop transitions, 21 changer transitions 3/73 dead transitions. [2023-11-06 22:44:43,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 73 transitions, 773 flow [2023-11-06 22:44:43,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:44:43,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 22:44:43,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 633 transitions. [2023-11-06 22:44:43,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4766566265060241 [2023-11-06 22:44:43,193 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 633 transitions. [2023-11-06 22:44:43,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 633 transitions. [2023-11-06 22:44:43,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:44:43,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 633 transitions. [2023-11-06 22:44:43,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 79.125) internal successors, (633), 8 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:43,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 166.0) internal successors, (1494), 9 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:43,200 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 166.0) internal successors, (1494), 9 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:43,200 INFO L175 Difference]: Start difference. First operand has 66 places, 51 transitions, 505 flow. Second operand 8 states and 633 transitions. [2023-11-06 22:44:43,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 73 transitions, 773 flow [2023-11-06 22:44:43,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 73 transitions, 758 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-06 22:44:43,208 INFO L231 Difference]: Finished difference. Result has 73 places, 51 transitions, 540 flow [2023-11-06 22:44:43,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=540, PETRI_PLACES=73, PETRI_TRANSITIONS=51} [2023-11-06 22:44:43,209 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 47 predicate places. [2023-11-06 22:44:43,209 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 51 transitions, 540 flow [2023-11-06 22:44:43,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:43,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:44:43,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:43,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-06 22:44:43,209 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-06 22:44:43,210 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:43,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1925402738, now seen corresponding path program 2 times [2023-11-06 22:44:43,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:43,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732081971] [2023-11-06 22:44:43,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:43,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:43,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:43,248 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:43,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:43,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732081971] [2023-11-06 22:44:43,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732081971] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:43,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:43,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:44:43,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211317329] [2023-11-06 22:44:43,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:43,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:44:43,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:43,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:44:43,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:44:43,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 166 [2023-11-06 22:44:43,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 51 transitions, 540 flow. Second operand has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:43,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:44:43,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 166 [2023-11-06 22:44:43,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:44:43,430 INFO L124 PetriNetUnfolderBase]: 113/216 cut-off events. [2023-11-06 22:44:43,431 INFO L125 PetriNetUnfolderBase]: For 1586/1586 co-relation queries the response was YES. [2023-11-06 22:44:43,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1255 conditions, 216 events. 113/216 cut-off events. For 1586/1586 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 751 event pairs, 14 based on Foata normal form. 6/222 useless extension candidates. Maximal degree in co-relation 1162. Up to 173 conditions per place. [2023-11-06 22:44:43,434 INFO L140 encePairwiseOnDemand]: 160/166 looper letters, 47 selfloop transitions, 14 changer transitions 0/61 dead transitions. [2023-11-06 22:44:43,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 61 transitions, 705 flow [2023-11-06 22:44:43,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:44:43,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:44:43,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 400 transitions. [2023-11-06 22:44:43,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4819277108433735 [2023-11-06 22:44:43,436 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 400 transitions. [2023-11-06 22:44:43,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 400 transitions. [2023-11-06 22:44:43,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:44:43,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 400 transitions. [2023-11-06 22:44:43,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 80.0) internal successors, (400), 5 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:43,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 166.0) internal successors, (996), 6 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:43,440 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 166.0) internal successors, (996), 6 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:43,441 INFO L175 Difference]: Start difference. First operand has 73 places, 51 transitions, 540 flow. Second operand 5 states and 400 transitions. [2023-11-06 22:44:43,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 61 transitions, 705 flow [2023-11-06 22:44:43,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 61 transitions, 646 flow, removed 7 selfloop flow, removed 5 redundant places. [2023-11-06 22:44:43,449 INFO L231 Difference]: Finished difference. Result has 73 places, 50 transitions, 510 flow [2023-11-06 22:44:43,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=510, PETRI_PLACES=73, PETRI_TRANSITIONS=50} [2023-11-06 22:44:43,450 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 47 predicate places. [2023-11-06 22:44:43,450 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 50 transitions, 510 flow [2023-11-06 22:44:43,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:43,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:44:43,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:43,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-06 22:44:43,451 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-06 22:44:43,451 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:43,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1938636638, now seen corresponding path program 3 times [2023-11-06 22:44:43,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:43,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963080357] [2023-11-06 22:44:43,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:43,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:43,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:43,490 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:43,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:43,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963080357] [2023-11-06 22:44:43,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963080357] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:43,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:43,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:44:43,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011127042] [2023-11-06 22:44:43,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:43,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:44:43,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:43,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:44:43,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:44:43,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 166 [2023-11-06 22:44:43,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 50 transitions, 510 flow. Second operand has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:43,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:44:43,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 166 [2023-11-06 22:44:43,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:44:43,700 INFO L124 PetriNetUnfolderBase]: 146/281 cut-off events. [2023-11-06 22:44:43,700 INFO L125 PetriNetUnfolderBase]: For 1898/1898 co-relation queries the response was YES. [2023-11-06 22:44:43,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1604 conditions, 281 events. 146/281 cut-off events. For 1898/1898 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1096 event pairs, 28 based on Foata normal form. 2/283 useless extension candidates. Maximal degree in co-relation 1500. Up to 107 conditions per place. [2023-11-06 22:44:43,704 INFO L140 encePairwiseOnDemand]: 158/166 looper letters, 50 selfloop transitions, 28 changer transitions 2/80 dead transitions. [2023-11-06 22:44:43,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 80 transitions, 921 flow [2023-11-06 22:44:43,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:44:43,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:44:43,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 550 transitions. [2023-11-06 22:44:43,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47332185886402756 [2023-11-06 22:44:43,707 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 550 transitions. [2023-11-06 22:44:43,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 550 transitions. [2023-11-06 22:44:43,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:44:43,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 550 transitions. [2023-11-06 22:44:43,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 78.57142857142857) internal successors, (550), 7 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:43,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 166.0) internal successors, (1328), 8 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:43,713 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 166.0) internal successors, (1328), 8 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:43,713 INFO L175 Difference]: Start difference. First operand has 73 places, 50 transitions, 510 flow. Second operand 7 states and 550 transitions. [2023-11-06 22:44:43,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 80 transitions, 921 flow [2023-11-06 22:44:43,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 80 transitions, 883 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-11-06 22:44:43,723 INFO L231 Difference]: Finished difference. Result has 80 places, 60 transitions, 703 flow [2023-11-06 22:44:43,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=703, PETRI_PLACES=80, PETRI_TRANSITIONS=60} [2023-11-06 22:44:43,724 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 54 predicate places. [2023-11-06 22:44:43,724 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 60 transitions, 703 flow [2023-11-06 22:44:43,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:43,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:44:43,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:43,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-06 22:44:43,725 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-06 22:44:43,725 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:43,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1937024111, now seen corresponding path program 1 times [2023-11-06 22:44:43,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:43,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075462767] [2023-11-06 22:44:43,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:43,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:43,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:43,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:43,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:43,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075462767] [2023-11-06 22:44:43,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075462767] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:44:43,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570023789] [2023-11-06 22:44:43,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:43,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:43,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:43,771 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:44:43,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:44:43,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:43,852 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:44:43,856 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:44:43,889 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:43,889 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:44:43,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:43,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570023789] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:44:43,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:44:43,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 6 [2023-11-06 22:44:43,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865168145] [2023-11-06 22:44:43,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:43,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:44:43,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:43,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:44:43,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:44:43,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 166 [2023-11-06 22:44:43,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 60 transitions, 703 flow. Second operand has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:43,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:44:43,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 166 [2023-11-06 22:44:43,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:44:44,148 INFO L124 PetriNetUnfolderBase]: 135/256 cut-off events. [2023-11-06 22:44:44,148 INFO L125 PetriNetUnfolderBase]: For 1996/1996 co-relation queries the response was YES. [2023-11-06 22:44:44,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1582 conditions, 256 events. 135/256 cut-off events. For 1996/1996 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 960 event pairs, 9 based on Foata normal form. 4/260 useless extension candidates. Maximal degree in co-relation 1510. Up to 128 conditions per place. [2023-11-06 22:44:44,152 INFO L140 encePairwiseOnDemand]: 158/166 looper letters, 50 selfloop transitions, 22 changer transitions 0/72 dead transitions. [2023-11-06 22:44:44,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 72 transitions, 899 flow [2023-11-06 22:44:44,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:44:44,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:44:44,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 404 transitions. [2023-11-06 22:44:44,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4867469879518072 [2023-11-06 22:44:44,155 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 404 transitions. [2023-11-06 22:44:44,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 404 transitions. [2023-11-06 22:44:44,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:44:44,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 404 transitions. [2023-11-06 22:44:44,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:44,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 166.0) internal successors, (996), 6 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:44,160 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 166.0) internal successors, (996), 6 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:44,160 INFO L175 Difference]: Start difference. First operand has 80 places, 60 transitions, 703 flow. Second operand 5 states and 404 transitions. [2023-11-06 22:44:44,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 72 transitions, 899 flow [2023-11-06 22:44:44,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 72 transitions, 861 flow, removed 14 selfloop flow, removed 3 redundant places. [2023-11-06 22:44:44,171 INFO L231 Difference]: Finished difference. Result has 82 places, 59 transitions, 696 flow [2023-11-06 22:44:44,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=635, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=696, PETRI_PLACES=82, PETRI_TRANSITIONS=59} [2023-11-06 22:44:44,172 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 56 predicate places. [2023-11-06 22:44:44,172 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 59 transitions, 696 flow [2023-11-06 22:44:44,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:44,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:44:44,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:44,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:44:44,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-06 22:44:44,379 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-06 22:44:44,380 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:44,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1937022158, now seen corresponding path program 4 times [2023-11-06 22:44:44,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:44,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611311234] [2023-11-06 22:44:44,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:44,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:44,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:44,448 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:44,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:44,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611311234] [2023-11-06 22:44:44,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611311234] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:44,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:44,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:44:44,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473707246] [2023-11-06 22:44:44,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:44,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:44:44,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:44,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:44:44,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:44:44,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 166 [2023-11-06 22:44:44,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 59 transitions, 696 flow. Second operand has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:44,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:44:44,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 166 [2023-11-06 22:44:44,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:44:44,710 INFO L124 PetriNetUnfolderBase]: 129/246 cut-off events. [2023-11-06 22:44:44,711 INFO L125 PetriNetUnfolderBase]: For 1989/1989 co-relation queries the response was YES. [2023-11-06 22:44:44,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1547 conditions, 246 events. 129/246 cut-off events. For 1989/1989 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 916 event pairs, 22 based on Foata normal form. 4/250 useless extension candidates. Maximal degree in co-relation 1474. Up to 92 conditions per place. [2023-11-06 22:44:44,715 INFO L140 encePairwiseOnDemand]: 159/166 looper letters, 52 selfloop transitions, 27 changer transitions 1/80 dead transitions. [2023-11-06 22:44:44,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 80 transitions, 989 flow [2023-11-06 22:44:44,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:44:44,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 22:44:44,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 630 transitions. [2023-11-06 22:44:44,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4743975903614458 [2023-11-06 22:44:44,718 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 630 transitions. [2023-11-06 22:44:44,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 630 transitions. [2023-11-06 22:44:44,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:44:44,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 630 transitions. [2023-11-06 22:44:44,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 78.75) internal successors, (630), 8 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:44,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 166.0) internal successors, (1494), 9 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:44,725 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 166.0) internal successors, (1494), 9 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:44,725 INFO L175 Difference]: Start difference. First operand has 82 places, 59 transitions, 696 flow. Second operand 8 states and 630 transitions. [2023-11-06 22:44:44,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 80 transitions, 989 flow [2023-11-06 22:44:44,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 80 transitions, 951 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-11-06 22:44:44,741 INFO L231 Difference]: Finished difference. Result has 87 places, 60 transitions, 745 flow [2023-11-06 22:44:44,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=663, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=745, PETRI_PLACES=87, PETRI_TRANSITIONS=60} [2023-11-06 22:44:44,742 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 61 predicate places. [2023-11-06 22:44:44,742 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 60 transitions, 745 flow [2023-11-06 22:44:44,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:44,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:44:44,743 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:44,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-06 22:44:44,743 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-06 22:44:44,744 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:44,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1937023210, now seen corresponding path program 4 times [2023-11-06 22:44:44,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:44,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937279126] [2023-11-06 22:44:44,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:44,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:44,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:44,789 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:44,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:44,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937279126] [2023-11-06 22:44:44,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937279126] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:44,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:44,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:44:44,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565510390] [2023-11-06 22:44:44,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:44,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:44:44,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:44,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:44:44,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:44:44,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 166 [2023-11-06 22:44:44,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 60 transitions, 745 flow. Second operand has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:44,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:44:44,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 166 [2023-11-06 22:44:44,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:44:44,996 INFO L124 PetriNetUnfolderBase]: 114/221 cut-off events. [2023-11-06 22:44:44,997 INFO L125 PetriNetUnfolderBase]: For 1900/1900 co-relation queries the response was YES. [2023-11-06 22:44:44,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1427 conditions, 221 events. 114/221 cut-off events. For 1900/1900 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 790 event pairs, 9 based on Foata normal form. 8/229 useless extension candidates. Maximal degree in co-relation 1196. Up to 102 conditions per place. [2023-11-06 22:44:45,000 INFO L140 encePairwiseOnDemand]: 159/166 looper letters, 48 selfloop transitions, 19 changer transitions 4/71 dead transitions. [2023-11-06 22:44:45,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 71 transitions, 929 flow [2023-11-06 22:44:45,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:44:45,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:44:45,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 475 transitions. [2023-11-06 22:44:45,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47690763052208834 [2023-11-06 22:44:45,003 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 475 transitions. [2023-11-06 22:44:45,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 475 transitions. [2023-11-06 22:44:45,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:44:45,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 475 transitions. [2023-11-06 22:44:45,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 79.16666666666667) internal successors, (475), 6 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:45,007 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 166.0) internal successors, (1162), 7 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:45,007 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 166.0) internal successors, (1162), 7 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:45,007 INFO L175 Difference]: Start difference. First operand has 87 places, 60 transitions, 745 flow. Second operand 6 states and 475 transitions. [2023-11-06 22:44:45,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 71 transitions, 929 flow [2023-11-06 22:44:45,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 71 transitions, 873 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-11-06 22:44:45,021 INFO L231 Difference]: Finished difference. Result has 87 places, 55 transitions, 651 flow [2023-11-06 22:44:45,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=655, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=651, PETRI_PLACES=87, PETRI_TRANSITIONS=55} [2023-11-06 22:44:45,022 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 61 predicate places. [2023-11-06 22:44:45,023 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 55 transitions, 651 flow [2023-11-06 22:44:45,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:45,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:44:45,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:45,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-06 22:44:45,024 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-06 22:44:45,024 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:45,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1937021228, now seen corresponding path program 5 times [2023-11-06 22:44:45,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:45,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343033626] [2023-11-06 22:44:45,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:45,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:45,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:45,064 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:45,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:45,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343033626] [2023-11-06 22:44:45,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343033626] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:45,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:45,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:44:45,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072703058] [2023-11-06 22:44:45,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:45,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:44:45,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:45,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:44:45,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:44:45,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 166 [2023-11-06 22:44:45,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 55 transitions, 651 flow. Second operand has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:45,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:44:45,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 166 [2023-11-06 22:44:45,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:44:45,252 INFO L124 PetriNetUnfolderBase]: 107/198 cut-off events. [2023-11-06 22:44:45,253 INFO L125 PetriNetUnfolderBase]: For 2001/2001 co-relation queries the response was YES. [2023-11-06 22:44:45,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1269 conditions, 198 events. 107/198 cut-off events. For 2001/2001 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 636 event pairs, 33 based on Foata normal form. 6/204 useless extension candidates. Maximal degree in co-relation 1164. Up to 153 conditions per place. [2023-11-06 22:44:45,256 INFO L140 encePairwiseOnDemand]: 160/166 looper letters, 46 selfloop transitions, 16 changer transitions 0/62 dead transitions. [2023-11-06 22:44:45,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 62 transitions, 781 flow [2023-11-06 22:44:45,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:44:45,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:44:45,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 398 transitions. [2023-11-06 22:44:45,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4795180722891566 [2023-11-06 22:44:45,258 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 398 transitions. [2023-11-06 22:44:45,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 398 transitions. [2023-11-06 22:44:45,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:44:45,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 398 transitions. [2023-11-06 22:44:45,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 79.6) internal successors, (398), 5 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:45,263 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 166.0) internal successors, (996), 6 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:45,263 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 166.0) internal successors, (996), 6 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:45,264 INFO L175 Difference]: Start difference. First operand has 87 places, 55 transitions, 651 flow. Second operand 5 states and 398 transitions. [2023-11-06 22:44:45,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 62 transitions, 781 flow [2023-11-06 22:44:45,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 62 transitions, 709 flow, removed 7 selfloop flow, removed 8 redundant places. [2023-11-06 22:44:45,273 INFO L231 Difference]: Finished difference. Result has 80 places, 53 transitions, 582 flow [2023-11-06 22:44:45,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=536, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=582, PETRI_PLACES=80, PETRI_TRANSITIONS=53} [2023-11-06 22:44:45,274 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 54 predicate places. [2023-11-06 22:44:45,274 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 53 transitions, 582 flow [2023-11-06 22:44:45,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:45,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:44:45,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:45,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-06 22:44:45,275 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-06 22:44:45,275 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:45,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1398719870, now seen corresponding path program 1 times [2023-11-06 22:44:45,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:45,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097806242] [2023-11-06 22:44:45,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:45,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:45,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:45,392 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:45,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:45,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097806242] [2023-11-06 22:44:45,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097806242] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:44:45,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116693489] [2023-11-06 22:44:45,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:45,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:45,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:45,395 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:44:45,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:44:45,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:45,473 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:44:45,475 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:44:45,608 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:45,608 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:44:45,713 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:45,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2116693489] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:44:45,714 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:44:45,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2023-11-06 22:44:45,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712641262] [2023-11-06 22:44:45,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:44:45,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-06 22:44:45,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:45,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-06 22:44:45,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2023-11-06 22:44:45,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 166 [2023-11-06 22:44:45,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 53 transitions, 582 flow. Second operand has 20 states, 20 states have (on average 72.5) internal successors, (1450), 20 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:45,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:44:45,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 166 [2023-11-06 22:44:45,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:44:46,564 INFO L124 PetriNetUnfolderBase]: 171/318 cut-off events. [2023-11-06 22:44:46,565 INFO L125 PetriNetUnfolderBase]: For 2150/2150 co-relation queries the response was YES. [2023-11-06 22:44:46,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1912 conditions, 318 events. 171/318 cut-off events. For 2150/2150 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1224 event pairs, 6 based on Foata normal form. 20/338 useless extension candidates. Maximal degree in co-relation 1764. Up to 89 conditions per place. [2023-11-06 22:44:46,569 INFO L140 encePairwiseOnDemand]: 157/166 looper letters, 68 selfloop transitions, 35 changer transitions 23/126 dead transitions. [2023-11-06 22:44:46,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 126 transitions, 1348 flow [2023-11-06 22:44:46,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-06 22:44:46,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-06 22:44:46,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1583 transitions. [2023-11-06 22:44:46,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45410212277682155 [2023-11-06 22:44:46,574 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1583 transitions. [2023-11-06 22:44:46,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1583 transitions. [2023-11-06 22:44:46,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:44:46,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1583 transitions. [2023-11-06 22:44:46,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 75.38095238095238) internal successors, (1583), 21 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:46,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 166.0) internal successors, (3652), 22 states have internal predecessors, (3652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:46,586 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 166.0) internal successors, (3652), 22 states have internal predecessors, (3652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:46,586 INFO L175 Difference]: Start difference. First operand has 80 places, 53 transitions, 582 flow. Second operand 21 states and 1583 transitions. [2023-11-06 22:44:46,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 126 transitions, 1348 flow [2023-11-06 22:44:46,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 126 transitions, 1306 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:44:46,598 INFO L231 Difference]: Finished difference. Result has 105 places, 62 transitions, 792 flow [2023-11-06 22:44:46,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=792, PETRI_PLACES=105, PETRI_TRANSITIONS=62} [2023-11-06 22:44:46,598 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 79 predicate places. [2023-11-06 22:44:46,599 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 62 transitions, 792 flow [2023-11-06 22:44:46,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 72.5) internal successors, (1450), 20 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:46,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:44:46,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:46,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:44:46,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-06 22:44:46,813 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-06 22:44:46,813 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:46,813 INFO L85 PathProgramCache]: Analyzing trace with hash -404518177, now seen corresponding path program 1 times [2023-11-06 22:44:46,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:46,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529031] [2023-11-06 22:44:46,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:46,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:46,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:46,918 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:46,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:46,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529031] [2023-11-06 22:44:46,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529031] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:44:46,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764385601] [2023-11-06 22:44:46,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:46,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:46,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:46,920 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:44:46,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:44:46,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:46,992 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:44:46,993 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:44:47,096 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:47,096 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:44:47,183 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:47,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764385601] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:44:47,183 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:44:47,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2023-11-06 22:44:47,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326477111] [2023-11-06 22:44:47,184 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:44:47,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-06 22:44:47,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:47,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-06 22:44:47,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2023-11-06 22:44:47,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 166 [2023-11-06 22:44:47,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 62 transitions, 792 flow. Second operand has 20 states, 20 states have (on average 71.5) internal successors, (1430), 20 states have internal predecessors, (1430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:47,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:44:47,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 166 [2023-11-06 22:44:47,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:44:47,977 INFO L124 PetriNetUnfolderBase]: 169/312 cut-off events. [2023-11-06 22:44:47,978 INFO L125 PetriNetUnfolderBase]: For 3280/3280 co-relation queries the response was YES. [2023-11-06 22:44:47,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2172 conditions, 312 events. 169/312 cut-off events. For 3280/3280 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1150 event pairs, 6 based on Foata normal form. 12/324 useless extension candidates. Maximal degree in co-relation 2022. Up to 103 conditions per place. [2023-11-06 22:44:47,983 INFO L140 encePairwiseOnDemand]: 157/166 looper letters, 57 selfloop transitions, 44 changer transitions 12/113 dead transitions. [2023-11-06 22:44:47,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 113 transitions, 1495 flow [2023-11-06 22:44:47,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-06 22:44:47,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-06 22:44:47,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1205 transitions. [2023-11-06 22:44:47,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45368975903614456 [2023-11-06 22:44:47,986 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1205 transitions. [2023-11-06 22:44:47,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1205 transitions. [2023-11-06 22:44:47,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:44:47,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1205 transitions. [2023-11-06 22:44:47,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 75.3125) internal successors, (1205), 16 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:47,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 166.0) internal successors, (2822), 17 states have internal predecessors, (2822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:48,004 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 166.0) internal successors, (2822), 17 states have internal predecessors, (2822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:48,012 INFO L175 Difference]: Start difference. First operand has 105 places, 62 transitions, 792 flow. Second operand 16 states and 1205 transitions. [2023-11-06 22:44:48,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 113 transitions, 1495 flow [2023-11-06 22:44:48,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 113 transitions, 1329 flow, removed 47 selfloop flow, removed 12 redundant places. [2023-11-06 22:44:48,032 INFO L231 Difference]: Finished difference. Result has 113 places, 70 transitions, 958 flow [2023-11-06 22:44:48,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=641, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=958, PETRI_PLACES=113, PETRI_TRANSITIONS=70} [2023-11-06 22:44:48,033 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 87 predicate places. [2023-11-06 22:44:48,033 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 70 transitions, 958 flow [2023-11-06 22:44:48,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 71.5) internal successors, (1430), 20 states have internal predecessors, (1430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:48,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:44:48,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:48,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:44:48,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:48,240 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-06 22:44:48,240 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:48,240 INFO L85 PathProgramCache]: Analyzing trace with hash -28343407, now seen corresponding path program 2 times [2023-11-06 22:44:48,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:48,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129081077] [2023-11-06 22:44:48,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:48,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:48,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:48,317 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:48,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:48,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129081077] [2023-11-06 22:44:48,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129081077] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:44:48,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731866535] [2023-11-06 22:44:48,318 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:44:48,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:48,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:48,320 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:44:48,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:44:48,405 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:44:48,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:44:48,407 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:44:48,408 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:44:48,520 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:48,520 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:44:48,628 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:48,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731866535] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:44:48,628 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:44:48,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2023-11-06 22:44:48,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483240334] [2023-11-06 22:44:48,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:44:48,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-06 22:44:48,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:48,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-06 22:44:48,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2023-11-06 22:44:48,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 166 [2023-11-06 22:44:48,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 70 transitions, 958 flow. Second operand has 20 states, 20 states have (on average 72.5) internal successors, (1450), 20 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:48,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:44:48,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 166 [2023-11-06 22:44:48,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:44:49,551 INFO L124 PetriNetUnfolderBase]: 208/375 cut-off events. [2023-11-06 22:44:49,551 INFO L125 PetriNetUnfolderBase]: For 5697/5697 co-relation queries the response was YES. [2023-11-06 22:44:49,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2837 conditions, 375 events. 208/375 cut-off events. For 5697/5697 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1432 event pairs, 8 based on Foata normal form. 12/387 useless extension candidates. Maximal degree in co-relation 2692. Up to 121 conditions per place. [2023-11-06 22:44:49,558 INFO L140 encePairwiseOnDemand]: 157/166 looper letters, 77 selfloop transitions, 45 changer transitions 12/134 dead transitions. [2023-11-06 22:44:49,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 134 transitions, 1974 flow [2023-11-06 22:44:49,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-06 22:44:49,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-06 22:44:49,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1567 transitions. [2023-11-06 22:44:49,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4495123350545037 [2023-11-06 22:44:49,563 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1567 transitions. [2023-11-06 22:44:49,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1567 transitions. [2023-11-06 22:44:49,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:44:49,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1567 transitions. [2023-11-06 22:44:49,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 74.61904761904762) internal successors, (1567), 21 states have internal predecessors, (1567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:49,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 166.0) internal successors, (3652), 22 states have internal predecessors, (3652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:49,573 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 166.0) internal successors, (3652), 22 states have internal predecessors, (3652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:49,573 INFO L175 Difference]: Start difference. First operand has 113 places, 70 transitions, 958 flow. Second operand 21 states and 1567 transitions. [2023-11-06 22:44:49,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 134 transitions, 1974 flow [2023-11-06 22:44:49,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 134 transitions, 1676 flow, removed 94 selfloop flow, removed 13 redundant places. [2023-11-06 22:44:49,600 INFO L231 Difference]: Finished difference. Result has 125 places, 84 transitions, 1166 flow [2023-11-06 22:44:49,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=783, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1166, PETRI_PLACES=125, PETRI_TRANSITIONS=84} [2023-11-06 22:44:49,601 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 99 predicate places. [2023-11-06 22:44:49,601 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 84 transitions, 1166 flow [2023-11-06 22:44:49,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 72.5) internal successors, (1450), 20 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:49,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:44:49,602 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:49,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:44:49,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-06 22:44:49,808 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-06 22:44:49,808 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:49,808 INFO L85 PathProgramCache]: Analyzing trace with hash 382287216, now seen corresponding path program 2 times [2023-11-06 22:44:49,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:49,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327693046] [2023-11-06 22:44:49,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:49,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:49,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:49,869 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:49,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:49,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327693046] [2023-11-06 22:44:49,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327693046] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:44:49,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869299199] [2023-11-06 22:44:49,870 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:44:49,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:49,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:49,872 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:44:49,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:44:49,953 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:44:49,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:44:49,954 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:44:49,955 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:44:50,085 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:50,085 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:44:50,227 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:50,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [869299199] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:44:50,227 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:44:50,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 20 [2023-11-06 22:44:50,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718229312] [2023-11-06 22:44:50,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:44:50,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-06 22:44:50,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:50,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-06 22:44:50,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2023-11-06 22:44:50,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 166 [2023-11-06 22:44:50,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 84 transitions, 1166 flow. Second operand has 21 states, 21 states have (on average 71.57142857142857) internal successors, (1503), 21 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:50,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:44:50,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 166 [2023-11-06 22:44:50,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:44:51,636 INFO L124 PetriNetUnfolderBase]: 331/586 cut-off events. [2023-11-06 22:44:51,636 INFO L125 PetriNetUnfolderBase]: For 10951/10951 co-relation queries the response was YES. [2023-11-06 22:44:51,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4523 conditions, 586 events. 331/586 cut-off events. For 10951/10951 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2467 event pairs, 16 based on Foata normal form. 32/618 useless extension candidates. Maximal degree in co-relation 4397. Up to 191 conditions per place. [2023-11-06 22:44:51,643 INFO L140 encePairwiseOnDemand]: 157/166 looper letters, 77 selfloop transitions, 42 changer transitions 102/221 dead transitions. [2023-11-06 22:44:51,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 221 transitions, 3118 flow [2023-11-06 22:44:51,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-06 22:44:51,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-11-06 22:44:51,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 2604 transitions. [2023-11-06 22:44:51,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44819277108433736 [2023-11-06 22:44:51,651 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 2604 transitions. [2023-11-06 22:44:51,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 2604 transitions. [2023-11-06 22:44:51,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:44:51,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 2604 transitions. [2023-11-06 22:44:51,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 74.4) internal successors, (2604), 35 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:51,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 166.0) internal successors, (5976), 36 states have internal predecessors, (5976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:51,669 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 166.0) internal successors, (5976), 36 states have internal predecessors, (5976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:51,670 INFO L175 Difference]: Start difference. First operand has 125 places, 84 transitions, 1166 flow. Second operand 35 states and 2604 transitions. [2023-11-06 22:44:51,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 221 transitions, 3118 flow [2023-11-06 22:44:51,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 221 transitions, 2649 flow, removed 115 selfloop flow, removed 16 redundant places. [2023-11-06 22:44:51,707 INFO L231 Difference]: Finished difference. Result has 151 places, 60 transitions, 811 flow [2023-11-06 22:44:51,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=856, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=811, PETRI_PLACES=151, PETRI_TRANSITIONS=60} [2023-11-06 22:44:51,708 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 125 predicate places. [2023-11-06 22:44:51,708 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 60 transitions, 811 flow [2023-11-06 22:44:51,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 71.57142857142857) internal successors, (1503), 21 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:51,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:44:51,710 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:51,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:44:51,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-06 22:44:51,915 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-06 22:44:51,915 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:51,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1410936786, now seen corresponding path program 3 times [2023-11-06 22:44:51,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:51,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694664602] [2023-11-06 22:44:51,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:51,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:51,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:52,062 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:52,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:52,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694664602] [2023-11-06 22:44:52,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694664602] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:44:52,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715093906] [2023-11-06 22:44:52,062 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:44:52,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:52,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:52,066 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:44:52,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:44:52,141 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-06 22:44:52,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:44:52,142 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:44:52,144 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:44:52,264 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:44:52,264 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:44:52,363 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:44:52,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715093906] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:44:52,363 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:44:52,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 20 [2023-11-06 22:44:52,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766240490] [2023-11-06 22:44:52,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:44:52,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-06 22:44:52,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:52,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-06 22:44:52,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2023-11-06 22:44:52,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 166 [2023-11-06 22:44:52,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 60 transitions, 811 flow. Second operand has 22 states, 22 states have (on average 71.63636363636364) internal successors, (1576), 22 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:52,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:44:52,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 166 [2023-11-06 22:44:52,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:44:53,193 INFO L124 PetriNetUnfolderBase]: 120/259 cut-off events. [2023-11-06 22:44:53,194 INFO L125 PetriNetUnfolderBase]: For 4651/4651 co-relation queries the response was YES. [2023-11-06 22:44:53,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1826 conditions, 259 events. 120/259 cut-off events. For 4651/4651 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1004 event pairs, 6 based on Foata normal form. 26/285 useless extension candidates. Maximal degree in co-relation 1781. Up to 130 conditions per place. [2023-11-06 22:44:53,197 INFO L140 encePairwiseOnDemand]: 157/166 looper letters, 16 selfloop transitions, 7 changer transitions 58/81 dead transitions. [2023-11-06 22:44:53,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 81 transitions, 1085 flow [2023-11-06 22:44:53,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-06 22:44:53,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-06 22:44:53,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1321 transitions. [2023-11-06 22:44:53,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4421017402945114 [2023-11-06 22:44:53,202 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1321 transitions. [2023-11-06 22:44:53,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1321 transitions. [2023-11-06 22:44:53,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:44:53,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1321 transitions. [2023-11-06 22:44:53,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 73.38888888888889) internal successors, (1321), 18 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:53,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 166.0) internal successors, (3154), 19 states have internal predecessors, (3154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:53,214 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 166.0) internal successors, (3154), 19 states have internal predecessors, (3154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:53,214 INFO L175 Difference]: Start difference. First operand has 151 places, 60 transitions, 811 flow. Second operand 18 states and 1321 transitions. [2023-11-06 22:44:53,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 81 transitions, 1085 flow [2023-11-06 22:44:53,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 81 transitions, 775 flow, removed 86 selfloop flow, removed 37 redundant places. [2023-11-06 22:44:53,233 INFO L231 Difference]: Finished difference. Result has 113 places, 17 transitions, 160 flow [2023-11-06 22:44:53,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=160, PETRI_PLACES=113, PETRI_TRANSITIONS=17} [2023-11-06 22:44:53,234 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 87 predicate places. [2023-11-06 22:44:53,234 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 17 transitions, 160 flow [2023-11-06 22:44:53,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 71.63636363636364) internal successors, (1576), 22 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:53,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:44:53,235 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:53,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:44:53,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-06 22:44:53,441 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-06 22:44:53,442 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:53,442 INFO L85 PathProgramCache]: Analyzing trace with hash -2114605090, now seen corresponding path program 4 times [2023-11-06 22:44:53,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:53,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567943681] [2023-11-06 22:44:53,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:53,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:53,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:53,543 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:53,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:53,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567943681] [2023-11-06 22:44:53,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567943681] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:44:53,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571781421] [2023-11-06 22:44:53,544 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 22:44:53,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:53,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:53,546 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:44:53,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:44:53,631 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 22:44:53,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:44:53,632 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:44:53,633 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:44:53,652 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:44:53,653 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:44:53,732 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:44:53,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571781421] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:44:53,733 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:44:53,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 13 [2023-11-06 22:44:53,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219416843] [2023-11-06 22:44:53,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:44:53,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 22:44:53,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:53,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:44:53,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:44:53,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 166 [2023-11-06 22:44:53,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 17 transitions, 160 flow. Second operand has 13 states, 13 states have (on average 74.53846153846153) internal successors, (969), 13 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:53,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:44:53,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 166 [2023-11-06 22:44:53,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:44:53,944 INFO L124 PetriNetUnfolderBase]: 19/54 cut-off events. [2023-11-06 22:44:53,944 INFO L125 PetriNetUnfolderBase]: For 477/477 co-relation queries the response was YES. [2023-11-06 22:44:53,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 336 conditions, 54 events. 19/54 cut-off events. For 477/477 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 78 event pairs, 7 based on Foata normal form. 2/56 useless extension candidates. Maximal degree in co-relation 303. Up to 31 conditions per place. [2023-11-06 22:44:53,945 INFO L140 encePairwiseOnDemand]: 160/166 looper letters, 17 selfloop transitions, 5 changer transitions 8/30 dead transitions. [2023-11-06 22:44:53,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 30 transitions, 305 flow [2023-11-06 22:44:53,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:44:53,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-06 22:44:53,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 757 transitions. [2023-11-06 22:44:53,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45602409638554214 [2023-11-06 22:44:53,948 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 757 transitions. [2023-11-06 22:44:53,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 757 transitions. [2023-11-06 22:44:53,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:44:53,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 757 transitions. [2023-11-06 22:44:53,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 75.7) internal successors, (757), 10 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:53,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 166.0) internal successors, (1826), 11 states have internal predecessors, (1826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:53,956 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 166.0) internal successors, (1826), 11 states have internal predecessors, (1826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:53,956 INFO L175 Difference]: Start difference. First operand has 113 places, 17 transitions, 160 flow. Second operand 10 states and 757 transitions. [2023-11-06 22:44:53,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 30 transitions, 305 flow [2023-11-06 22:44:53,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 30 transitions, 190 flow, removed 36 selfloop flow, removed 34 redundant places. [2023-11-06 22:44:53,959 INFO L231 Difference]: Finished difference. Result has 52 places, 18 transitions, 114 flow [2023-11-06 22:44:53,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=114, PETRI_PLACES=52, PETRI_TRANSITIONS=18} [2023-11-06 22:44:53,959 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 26 predicate places. [2023-11-06 22:44:53,959 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 18 transitions, 114 flow [2023-11-06 22:44:53,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 74.53846153846153) internal successors, (969), 13 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:53,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:44:53,961 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:53,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:44:54,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-06 22:44:54,176 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-06 22:44:54,176 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:54,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1056631925, now seen corresponding path program 5 times [2023-11-06 22:44:54,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:54,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64797231] [2023-11-06 22:44:54,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:54,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:54,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:54,319 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:54,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:54,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64797231] [2023-11-06 22:44:54,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64797231] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:44:54,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079809077] [2023-11-06 22:44:54,320 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-06 22:44:54,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:54,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:54,321 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:44:54,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 22:44:54,403 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-11-06 22:44:54,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:44:54,405 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 22:44:54,406 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:44:54,426 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:54,426 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:44:54,535 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:54,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2079809077] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:44:54,535 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:44:54,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 15 [2023-11-06 22:44:54,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424236954] [2023-11-06 22:44:54,536 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:44:54,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-06 22:44:54,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:54,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-06 22:44:54,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2023-11-06 22:44:54,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 166 [2023-11-06 22:44:54,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 18 transitions, 114 flow. Second operand has 15 states, 15 states have (on average 74.33333333333333) internal successors, (1115), 15 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:54,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:44:54,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 166 [2023-11-06 22:44:54,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:44:54,812 INFO L124 PetriNetUnfolderBase]: 21/60 cut-off events. [2023-11-06 22:44:54,813 INFO L125 PetriNetUnfolderBase]: For 64/64 co-relation queries the response was YES. [2023-11-06 22:44:54,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264 conditions, 60 events. 21/60 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 92 event pairs, 7 based on Foata normal form. 2/62 useless extension candidates. Maximal degree in co-relation 248. Up to 31 conditions per place. [2023-11-06 22:44:54,813 INFO L140 encePairwiseOnDemand]: 160/166 looper letters, 18 selfloop transitions, 6 changer transitions 10/34 dead transitions. [2023-11-06 22:44:54,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 34 transitions, 248 flow [2023-11-06 22:44:54,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:44:54,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 22:44:54,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 907 transitions. [2023-11-06 22:44:54,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45532128514056225 [2023-11-06 22:44:54,818 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 907 transitions. [2023-11-06 22:44:54,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 907 transitions. [2023-11-06 22:44:54,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:44:54,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 907 transitions. [2023-11-06 22:44:54,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 75.58333333333333) internal successors, (907), 12 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:54,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 166.0) internal successors, (2158), 13 states have internal predecessors, (2158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:54,825 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 166.0) internal successors, (2158), 13 states have internal predecessors, (2158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:54,825 INFO L175 Difference]: Start difference. First operand has 52 places, 18 transitions, 114 flow. Second operand 12 states and 907 transitions. [2023-11-06 22:44:54,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 34 transitions, 248 flow [2023-11-06 22:44:54,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 34 transitions, 219 flow, removed 11 selfloop flow, removed 7 redundant places. [2023-11-06 22:44:54,827 INFO L231 Difference]: Finished difference. Result has 58 places, 19 transitions, 129 flow [2023-11-06 22:44:54,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=129, PETRI_PLACES=58, PETRI_TRANSITIONS=19} [2023-11-06 22:44:54,831 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 32 predicate places. [2023-11-06 22:44:54,831 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 19 transitions, 129 flow [2023-11-06 22:44:54,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 74.33333333333333) internal successors, (1115), 15 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:54,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:44:54,832 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:54,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 22:44:55,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-06 22:44:55,038 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-06 22:44:55,038 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:55,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1675765118, now seen corresponding path program 6 times [2023-11-06 22:44:55,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:55,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895480940] [2023-11-06 22:44:55,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:55,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:55,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:55,267 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:55,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:55,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895480940] [2023-11-06 22:44:55,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895480940] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:44:55,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271474491] [2023-11-06 22:44:55,268 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-06 22:44:55,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:55,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:55,271 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:44:55,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 22:44:55,363 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-06 22:44:55,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:44:55,364 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 22:44:55,366 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:44:55,616 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:55,616 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:44:55,907 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:55,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271474491] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:44:55,907 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:44:55,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 36 [2023-11-06 22:44:55,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098788805] [2023-11-06 22:44:55,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:44:55,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-11-06 22:44:55,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:55,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-11-06 22:44:55,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=1166, Unknown=0, NotChecked=0, Total=1406 [2023-11-06 22:44:56,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 166 [2023-11-06 22:44:56,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 19 transitions, 129 flow. Second operand has 38 states, 38 states have (on average 72.26315789473684) internal successors, (2746), 38 states have internal predecessors, (2746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:56,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:44:56,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 166 [2023-11-06 22:44:56,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:44:57,100 INFO L124 PetriNetUnfolderBase]: 31/86 cut-off events. [2023-11-06 22:44:57,101 INFO L125 PetriNetUnfolderBase]: For 122/122 co-relation queries the response was YES. [2023-11-06 22:44:57,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 394 conditions, 86 events. 31/86 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 128 event pairs, 0 based on Foata normal form. 14/100 useless extension candidates. Maximal degree in co-relation 376. Up to 26 conditions per place. [2023-11-06 22:44:57,102 INFO L140 encePairwiseOnDemand]: 159/166 looper letters, 24 selfloop transitions, 19 changer transitions 13/56 dead transitions. [2023-11-06 22:44:57,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 56 transitions, 411 flow [2023-11-06 22:44:57,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-06 22:44:57,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-11-06 22:44:57,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 1909 transitions. [2023-11-06 22:44:57,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4423076923076923 [2023-11-06 22:44:57,110 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 1909 transitions. [2023-11-06 22:44:57,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 1909 transitions. [2023-11-06 22:44:57,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:44:57,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 1909 transitions. [2023-11-06 22:44:57,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 73.42307692307692) internal successors, (1909), 26 states have internal predecessors, (1909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:57,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 166.0) internal successors, (4482), 27 states have internal predecessors, (4482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:57,123 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 166.0) internal successors, (4482), 27 states have internal predecessors, (4482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:57,124 INFO L175 Difference]: Start difference. First operand has 58 places, 19 transitions, 129 flow. Second operand 26 states and 1909 transitions. [2023-11-06 22:44:57,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 56 transitions, 411 flow [2023-11-06 22:44:57,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 56 transitions, 374 flow, removed 14 selfloop flow, removed 9 redundant places. [2023-11-06 22:44:57,127 INFO L231 Difference]: Finished difference. Result has 77 places, 26 transitions, 242 flow [2023-11-06 22:44:57,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=5, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=242, PETRI_PLACES=77, PETRI_TRANSITIONS=26} [2023-11-06 22:44:57,128 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 51 predicate places. [2023-11-06 22:44:57,128 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 26 transitions, 242 flow [2023-11-06 22:44:57,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 72.26315789473684) internal successors, (2746), 38 states have internal predecessors, (2746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:57,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:44:57,130 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:57,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-06 22:44:57,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-06 22:44:57,336 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-06 22:44:57,337 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:57,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1926563883, now seen corresponding path program 7 times [2023-11-06 22:44:57,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:57,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403519629] [2023-11-06 22:44:57,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:57,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:57,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:57,681 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 55 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:57,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:57,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403519629] [2023-11-06 22:44:57,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403519629] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:44:57,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045806131] [2023-11-06 22:44:57,682 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-06 22:44:57,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:57,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:57,683 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:44:57,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-06 22:44:57,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:57,774 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 22:44:57,776 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:44:57,806 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 45 proven. 15 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 22:44:57,807 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:44:58,037 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 45 proven. 15 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 22:44:58,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2045806131] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:44:58,038 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:44:58,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15, 15] total 25 [2023-11-06 22:44:58,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725257072] [2023-11-06 22:44:58,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:44:58,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-06 22:44:58,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:58,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-06 22:44:58,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2023-11-06 22:44:58,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 166 [2023-11-06 22:44:58,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 26 transitions, 242 flow. Second operand has 25 states, 25 states have (on average 74.28) internal successors, (1857), 25 states have internal predecessors, (1857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:58,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:44:58,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 166 [2023-11-06 22:44:58,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:44:58,396 INFO L124 PetriNetUnfolderBase]: 31/90 cut-off events. [2023-11-06 22:44:58,396 INFO L125 PetriNetUnfolderBase]: For 100/100 co-relation queries the response was YES. [2023-11-06 22:44:58,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 464 conditions, 90 events. 31/90 cut-off events. For 100/100 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 138 event pairs, 13 based on Foata normal form. 2/92 useless extension candidates. Maximal degree in co-relation 443. Up to 49 conditions per place. [2023-11-06 22:44:58,397 INFO L140 encePairwiseOnDemand]: 160/166 looper letters, 26 selfloop transitions, 8 changer transitions 14/48 dead transitions. [2023-11-06 22:44:58,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 48 transitions, 439 flow [2023-11-06 22:44:58,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-06 22:44:58,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-06 22:44:58,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1207 transitions. [2023-11-06 22:44:58,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45444277108433734 [2023-11-06 22:44:58,401 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1207 transitions. [2023-11-06 22:44:58,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1207 transitions. [2023-11-06 22:44:58,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:44:58,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1207 transitions. [2023-11-06 22:44:58,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 75.4375) internal successors, (1207), 16 states have internal predecessors, (1207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:58,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 166.0) internal successors, (2822), 17 states have internal predecessors, (2822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:58,409 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 166.0) internal successors, (2822), 17 states have internal predecessors, (2822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:58,409 INFO L175 Difference]: Start difference. First operand has 77 places, 26 transitions, 242 flow. Second operand 16 states and 1207 transitions. [2023-11-06 22:44:58,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 48 transitions, 439 flow [2023-11-06 22:44:58,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 48 transitions, 327 flow, removed 41 selfloop flow, removed 12 redundant places. [2023-11-06 22:44:58,413 INFO L231 Difference]: Finished difference. Result has 82 places, 27 transitions, 197 flow [2023-11-06 22:44:58,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=197, PETRI_PLACES=82, PETRI_TRANSITIONS=27} [2023-11-06 22:44:58,414 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 56 predicate places. [2023-11-06 22:44:58,414 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 27 transitions, 197 flow [2023-11-06 22:44:58,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 74.28) internal successors, (1857), 25 states have internal predecessors, (1857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:58,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:44:58,416 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:58,423 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-06 22:44:58,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:58,621 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-06 22:44:58,622 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:58,622 INFO L85 PathProgramCache]: Analyzing trace with hash 822507294, now seen corresponding path program 8 times [2023-11-06 22:44:58,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:58,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449835700] [2023-11-06 22:44:58,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:58,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:58,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:58,914 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 55 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:58,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:58,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449835700] [2023-11-06 22:44:58,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449835700] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:44:58,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127551037] [2023-11-06 22:44:58,915 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:44:58,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:58,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:58,916 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:44:58,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-06 22:44:58,996 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:44:58,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:44:58,997 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-06 22:44:58,999 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:44:59,036 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 49 proven. 21 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:44:59,036 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:44:59,266 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 49 proven. 21 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:44:59,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127551037] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:44:59,266 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:44:59,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 17, 17] total 27 [2023-11-06 22:44:59,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817174282] [2023-11-06 22:44:59,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:44:59,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-06 22:44:59,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:59,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-06 22:44:59,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=529, Unknown=0, NotChecked=0, Total=702 [2023-11-06 22:44:59,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 166 [2023-11-06 22:44:59,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 27 transitions, 197 flow. Second operand has 27 states, 27 states have (on average 74.25925925925925) internal successors, (2005), 27 states have internal predecessors, (2005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:59,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:44:59,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 166 [2023-11-06 22:44:59,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:44:59,715 INFO L124 PetriNetUnfolderBase]: 33/96 cut-off events. [2023-11-06 22:44:59,716 INFO L125 PetriNetUnfolderBase]: For 204/204 co-relation queries the response was YES. [2023-11-06 22:44:59,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 440 conditions, 96 events. 33/96 cut-off events. For 204/204 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 154 event pairs, 13 based on Foata normal form. 2/98 useless extension candidates. Maximal degree in co-relation 412. Up to 49 conditions per place. [2023-11-06 22:44:59,717 INFO L140 encePairwiseOnDemand]: 160/166 looper letters, 27 selfloop transitions, 9 changer transitions 16/52 dead transitions. [2023-11-06 22:44:59,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 52 transitions, 409 flow [2023-11-06 22:44:59,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-06 22:44:59,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-06 22:44:59,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1357 transitions. [2023-11-06 22:44:59,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4541499330655957 [2023-11-06 22:44:59,721 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1357 transitions. [2023-11-06 22:44:59,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1357 transitions. [2023-11-06 22:44:59,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:44:59,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1357 transitions. [2023-11-06 22:44:59,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 75.38888888888889) internal successors, (1357), 18 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:59,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 166.0) internal successors, (3154), 19 states have internal predecessors, (3154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:59,730 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 166.0) internal successors, (3154), 19 states have internal predecessors, (3154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:59,730 INFO L175 Difference]: Start difference. First operand has 82 places, 27 transitions, 197 flow. Second operand 18 states and 1357 transitions. [2023-11-06 22:44:59,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 52 transitions, 409 flow [2023-11-06 22:44:59,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 52 transitions, 356 flow, removed 20 selfloop flow, removed 13 redundant places. [2023-11-06 22:44:59,734 INFO L231 Difference]: Finished difference. Result has 88 places, 28 transitions, 212 flow [2023-11-06 22:44:59,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=212, PETRI_PLACES=88, PETRI_TRANSITIONS=28} [2023-11-06 22:44:59,735 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 62 predicate places. [2023-11-06 22:44:59,735 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 28 transitions, 212 flow [2023-11-06 22:44:59,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 74.25925925925925) internal successors, (2005), 27 states have internal predecessors, (2005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:59,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:44:59,737 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:59,750 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-06 22:44:59,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:59,947 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-06 22:44:59,947 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:59,947 INFO L85 PathProgramCache]: Analyzing trace with hash 956491403, now seen corresponding path program 9 times [2023-11-06 22:44:59,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:59,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968932880] [2023-11-06 22:44:59,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:59,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:59,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:00,317 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 55 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:45:00,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:45:00,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968932880] [2023-11-06 22:45:00,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968932880] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:45:00,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948337060] [2023-11-06 22:45:00,318 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:45:00,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:45:00,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:45:00,319 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:45:00,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-06 22:45:00,410 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-06 22:45:00,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:45:00,411 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:45:00,412 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:45:00,508 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-06 22:45:00,508 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:45:00,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948337060] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:45:00,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:45:00,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [21] total 25 [2023-11-06 22:45:00,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996985275] [2023-11-06 22:45:00,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:45:00,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:45:00,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:45:00,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:45:00,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=476, Unknown=0, NotChecked=0, Total=600 [2023-11-06 22:45:00,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 166 [2023-11-06 22:45:00,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 28 transitions, 212 flow. Second operand has 6 states, 6 states have (on average 78.0) internal successors, (468), 6 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:45:00,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:45:00,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 166 [2023-11-06 22:45:00,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:45:00,603 INFO L124 PetriNetUnfolderBase]: 24/69 cut-off events. [2023-11-06 22:45:00,603 INFO L125 PetriNetUnfolderBase]: For 202/202 co-relation queries the response was YES. [2023-11-06 22:45:00,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 304 conditions, 69 events. 24/69 cut-off events. For 202/202 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 64 event pairs, 1 based on Foata normal form. 2/71 useless extension candidates. Maximal degree in co-relation 274. Up to 32 conditions per place. [2023-11-06 22:45:00,604 INFO L140 encePairwiseOnDemand]: 161/166 looper letters, 0 selfloop transitions, 0 changer transitions 30/30 dead transitions. [2023-11-06 22:45:00,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 30 transitions, 247 flow [2023-11-06 22:45:00,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:45:00,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:45:00,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 472 transitions. [2023-11-06 22:45:00,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4738955823293173 [2023-11-06 22:45:00,606 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 472 transitions. [2023-11-06 22:45:00,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 472 transitions. [2023-11-06 22:45:00,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:45:00,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 472 transitions. [2023-11-06 22:45:00,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 78.66666666666667) internal successors, (472), 6 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) [2023-11-06 22:45:00,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 166.0) internal successors, (1162), 7 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:45:00,610 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 166.0) internal successors, (1162), 7 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:45:00,610 INFO L175 Difference]: Start difference. First operand has 88 places, 28 transitions, 212 flow. Second operand 6 states and 472 transitions. [2023-11-06 22:45:00,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 30 transitions, 247 flow [2023-11-06 22:45:00,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 30 transitions, 175 flow, removed 19 selfloop flow, removed 25 redundant places. [2023-11-06 22:45:00,612 INFO L231 Difference]: Finished difference. Result has 52 places, 0 transitions, 0 flow [2023-11-06 22:45:00,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=52, PETRI_TRANSITIONS=0} [2023-11-06 22:45:00,613 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 26 predicate places. [2023-11-06 22:45:00,613 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 0 transitions, 0 flow [2023-11-06 22:45:00,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 78.0) internal successors, (468), 6 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:45:00,616 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 18 remaining) [2023-11-06 22:45:00,617 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2023-11-06 22:45:00,617 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2023-11-06 22:45:00,617 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2023-11-06 22:45:00,617 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2023-11-06 22:45:00,617 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2023-11-06 22:45:00,618 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2023-11-06 22:45:00,618 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2023-11-06 22:45:00,618 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 18 remaining) [2023-11-06 22:45:00,618 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2023-11-06 22:45:00,618 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2023-11-06 22:45:00,619 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2023-11-06 22:45:00,619 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2023-11-06 22:45:00,619 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2023-11-06 22:45:00,619 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2023-11-06 22:45:00,619 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2023-11-06 22:45:00,619 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2023-11-06 22:45:00,620 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2023-11-06 22:45:00,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-06 22:45:00,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:45:00,832 INFO L445 BasicCegarLoop]: Path program histogram: [9, 5, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1] [2023-11-06 22:45:00,837 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 22:45:00,838 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 22:45:00,844 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:45:00 BasicIcfg [2023-11-06 22:45:00,844 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 22:45:00,844 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:45:00,844 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:45:00,845 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:45:00,845 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:44:35" (3/4) ... [2023-11-06 22:45:00,848 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 22:45:00,853 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-06 22:45:00,853 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-06 22:45:00,860 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2023-11-06 22:45:00,860 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-06 22:45:00,860 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 22:45:00,861 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 22:45:00,921 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 22:45:00,921 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.yaml [2023-11-06 22:45:00,922 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:45:00,922 INFO L158 Benchmark]: Toolchain (without parser) took 26772.73ms. Allocated memory was 117.4MB in the beginning and 232.8MB in the end (delta: 115.3MB). Free memory was 73.0MB in the beginning and 157.4MB in the end (delta: -84.4MB). Peak memory consumption was 32.4MB. Max. memory is 16.1GB. [2023-11-06 22:45:00,923 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 117.4MB. Free memory is still 83.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:45:00,923 INFO L158 Benchmark]: CACSL2BoogieTranslator took 294.65ms. Allocated memory is still 117.4MB. Free memory was 72.6MB in the beginning and 61.8MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-06 22:45:00,923 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.36ms. Allocated memory is still 117.4MB. Free memory was 61.8MB in the beginning and 60.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:45:00,924 INFO L158 Benchmark]: Boogie Preprocessor took 35.28ms. Allocated memory is still 117.4MB. Free memory was 60.0MB in the beginning and 58.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:45:00,924 INFO L158 Benchmark]: RCFGBuilder took 552.32ms. Allocated memory is still 117.4MB. Free memory was 58.8MB in the beginning and 44.6MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-06 22:45:00,930 INFO L158 Benchmark]: TraceAbstraction took 25758.77ms. Allocated memory was 117.4MB in the beginning and 232.8MB in the end (delta: 115.3MB). Free memory was 44.0MB in the beginning and 160.5MB in the end (delta: -116.5MB). Peak memory consumption was 922.8kB. Max. memory is 16.1GB. [2023-11-06 22:45:00,930 INFO L158 Benchmark]: Witness Printer took 77.40ms. Allocated memory is still 232.8MB. Free memory was 160.5MB in the beginning and 157.4MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-06 22:45:00,932 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 117.4MB. Free memory is still 83.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 294.65ms. Allocated memory is still 117.4MB. Free memory was 72.6MB in the beginning and 61.8MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.36ms. Allocated memory is still 117.4MB. Free memory was 61.8MB in the beginning and 60.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.28ms. Allocated memory is still 117.4MB. Free memory was 60.0MB in the beginning and 58.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 552.32ms. Allocated memory is still 117.4MB. Free memory was 58.8MB in the beginning and 44.6MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 25758.77ms. Allocated memory was 117.4MB in the beginning and 232.8MB in the end (delta: 115.3MB). Free memory was 44.0MB in the beginning and 160.5MB in the end (delta: -116.5MB). Peak memory consumption was 922.8kB. Max. memory is 16.1GB. * Witness Printer took 77.40ms. Allocated memory is still 232.8MB. Free memory was 160.5MB in the beginning and 157.4MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.8s, 76 PlacesBefore, 26 PlacesAfterwards, 74 TransitionsBefore, 21 TransitionsAfterwards, 1088 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 0 ConcurrentYvCompositions, 3 ChoiceCompositions, 68 TotalNumberOfCompositions, 1018 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 938, independent: 931, independent conditional: 0, independent unconditional: 931, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 500, independent: 497, independent conditional: 0, independent unconditional: 497, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 938, independent: 434, independent conditional: 0, independent unconditional: 434, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 500, unknown conditional: 0, unknown unconditional: 500] , Statistics on independence cache: Total cache size (in pairs): 29, Positive cache size: 28, Positive conditional cache size: 0, Positive unconditional cache size: 28, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 57]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 57]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 127 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 25.5s, OverallIterations: 32, TraceHistogramMax: 10, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 12.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3885 SdHoareTripleChecker+Valid, 6.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3314 mSDsluCounter, 1943 SdHoareTripleChecker+Invalid, 5.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1793 mSDsCounter, 529 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9275 IncrementalHoareTripleChecker+Invalid, 9804 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 529 mSolverCounterUnsat, 150 mSDtfsCounter, 9275 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 726 GetRequests, 215 SyntacticMatches, 21 SemanticMatches, 490 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3689 ImplicationChecksByTransitivity, 5.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1166occurred in iteration=24, InterpolantAutomatonStates: 325, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 5.9s InterpolantComputationTime, 515 NumberOfCodeBlocks, 501 NumberOfCodeBlocksAsserted, 54 NumberOfCheckSat, 614 ConstructedInterpolants, 0 QuantifiedInterpolants, 2626 SizeOfPredicates, 23 NumberOfNonLiveVariables, 1260 ConjunctsInSsa, 115 ConjunctsInUnsatCore, 55 InterpolantComputations, 22 PerfectInterpolantSequences, 548/811 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-06 22:45:00,966 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95b8442d-4bca-443e-bcc5-71322fde9ba7/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE