./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-simpl-str-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a45d17c1-7bb2-498d-9ed3-b73eee619649/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a45d17c1-7bb2-498d-9ed3-b73eee619649/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a45d17c1-7bb2-498d-9ed3-b73eee619649/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a45d17c1-7bb2-498d-9ed3-b73eee619649/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-simpl-str-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a45d17c1-7bb2-498d-9ed3-b73eee619649/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a45d17c1-7bb2-498d-9ed3-b73eee619649/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 86978482104e316c202a01b019909b1a7fe566ade6200bbc4193c078d7c086e9 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 12:00:26,196 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 12:00:26,299 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a45d17c1-7bb2-498d-9ed3-b73eee619649/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-26 12:00:26,312 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 12:00:26,313 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 12:00:26,352 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 12:00:26,354 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 12:00:26,355 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 12:00:26,356 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 12:00:26,361 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 12:00:26,362 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 12:00:26,363 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 12:00:26,364 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 12:00:26,365 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 12:00:26,366 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 12:00:26,366 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 12:00:26,367 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 12:00:26,368 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 12:00:26,368 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 12:00:26,369 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 12:00:26,369 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 12:00:26,370 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 12:00:26,370 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 12:00:26,371 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 12:00:26,371 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 12:00:26,372 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 12:00:26,372 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 12:00:26,373 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 12:00:26,373 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 12:00:26,374 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 12:00:26,376 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 12:00:26,376 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 12:00:26,376 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 12:00:26,377 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:00:26,377 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 12:00:26,377 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 12:00:26,378 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 12:00:26,378 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 12:00:26,378 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 12:00:26,379 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 12:00:26,379 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 12:00:26,380 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 12:00:26,380 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 12:00:26,380 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 12:00:26,381 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_a45d17c1-7bb2-498d-9ed3-b73eee619649/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a45d17c1-7bb2-498d-9ed3-b73eee619649/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 86978482104e316c202a01b019909b1a7fe566ade6200bbc4193c078d7c086e9 [2023-11-26 12:00:26,706 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 12:00:26,735 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 12:00:26,738 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 12:00:26,739 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 12:00:26,740 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 12:00:26,741 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a45d17c1-7bb2-498d-9ed3-b73eee619649/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/weaver/chl-simpl-str-symm.wvr.c [2023-11-26 12:00:29,870 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 12:00:30,058 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 12:00:30,059 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a45d17c1-7bb2-498d-9ed3-b73eee619649/sv-benchmarks/c/weaver/chl-simpl-str-symm.wvr.c [2023-11-26 12:00:30,067 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a45d17c1-7bb2-498d-9ed3-b73eee619649/bin/uautomizer-verify-VRDe98Ueme/data/c1d5ae7ca/2cf50db9ee0b43c8816042f0314fa9b5/FLAG191d968f9 [2023-11-26 12:00:30,085 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a45d17c1-7bb2-498d-9ed3-b73eee619649/bin/uautomizer-verify-VRDe98Ueme/data/c1d5ae7ca/2cf50db9ee0b43c8816042f0314fa9b5 [2023-11-26 12:00:30,090 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 12:00:30,092 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 12:00:30,096 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 12:00:30,096 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 12:00:30,101 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 12:00:30,102 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:00:30" (1/1) ... [2023-11-26 12:00:30,103 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49037b56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:30, skipping insertion in model container [2023-11-26 12:00:30,103 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:00:30" (1/1) ... [2023-11-26 12:00:30,132 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 12:00:30,296 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:00:30,304 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 12:00:30,328 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:00:30,343 INFO L206 MainTranslator]: Completed translation [2023-11-26 12:00:30,344 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:30 WrapperNode [2023-11-26 12:00:30,344 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 12:00:30,345 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 12:00:30,345 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 12:00:30,345 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 12:00:30,353 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:30" (1/1) ... [2023-11-26 12:00:30,360 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:30" (1/1) ... [2023-11-26 12:00:30,386 INFO L138 Inliner]: procedures = 22, calls = 26, calls flagged for inlining = 10, calls inlined = 12, statements flattened = 157 [2023-11-26 12:00:30,386 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 12:00:30,387 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 12:00:30,387 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 12:00:30,387 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 12:00:30,398 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:30" (1/1) ... [2023-11-26 12:00:30,398 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:30" (1/1) ... [2023-11-26 12:00:30,402 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:30" (1/1) ... [2023-11-26 12:00:30,417 INFO L175 MemorySlicer]: Split 6 memory accesses to 3 slices as follows [2, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2023-11-26 12:00:30,417 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:30" (1/1) ... [2023-11-26 12:00:30,417 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:30" (1/1) ... [2023-11-26 12:00:30,425 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:30" (1/1) ... [2023-11-26 12:00:30,427 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:30" (1/1) ... [2023-11-26 12:00:30,429 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:30" (1/1) ... [2023-11-26 12:00:30,431 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:30" (1/1) ... [2023-11-26 12:00:30,434 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 12:00:30,437 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 12:00:30,437 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 12:00:30,437 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 12:00:30,438 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:30" (1/1) ... [2023-11-26 12:00:30,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:00:30,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a45d17c1-7bb2-498d-9ed3-b73eee619649/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:00:30,480 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a45d17c1-7bb2-498d-9ed3-b73eee619649/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 12:00:30,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 12:00:30,529 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-26 12:00:30,530 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-26 12:00:30,530 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-26 12:00:30,530 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-26 12:00:30,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 12:00:30,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 12:00:30,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 12:00:30,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 12:00:30,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 12:00:30,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 12:00:30,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 12:00:30,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 12:00:30,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 12:00:30,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 12:00:30,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 12:00:30,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 12:00:30,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 12:00:30,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a45d17c1-7bb2-498d-9ed3-b73eee619649/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 12:00:30,538 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 12:00:30,714 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 12:00:30,716 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 12:00:31,154 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 12:00:31,415 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 12:00:31,416 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-26 12:00:31,416 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:00:31 BoogieIcfgContainer [2023-11-26 12:00:31,416 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 12:00:31,419 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 12:00:31,419 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 12:00:31,427 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 12:00:31,428 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:00:30" (1/3) ... [2023-11-26 12:00:31,429 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fa0a093 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:00:31, skipping insertion in model container [2023-11-26 12:00:31,429 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:00:30" (2/3) ... [2023-11-26 12:00:31,430 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fa0a093 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:00:31, skipping insertion in model container [2023-11-26 12:00:31,430 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:00:31" (3/3) ... [2023-11-26 12:00:31,432 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-simpl-str-symm.wvr.c [2023-11-26 12:00:31,442 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 12:00:31,454 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 12:00:31,454 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-11-26 12:00:31,455 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 12:00:31,538 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-26 12:00:31,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 60 places, 61 transitions, 136 flow [2023-11-26 12:00:31,612 INFO L124 PetriNetUnfolderBase]: 8/59 cut-off events. [2023-11-26 12:00:31,613 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-26 12:00:31,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 59 events. 8/59 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 190 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2023-11-26 12:00:31,617 INFO L82 GeneralOperation]: Start removeDead. Operand has 60 places, 61 transitions, 136 flow [2023-11-26 12:00:31,622 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 57 transitions, 123 flow [2023-11-26 12:00:31,633 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:00:31,640 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@25210e57, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:00:31,641 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2023-11-26 12:00:31,658 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 12:00:31,659 INFO L124 PetriNetUnfolderBase]: 1/18 cut-off events. [2023-11-26 12:00:31,659 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-26 12:00:31,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:31,660 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:31,661 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-26 12:00:31,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:31,668 INFO L85 PathProgramCache]: Analyzing trace with hash 719171869, now seen corresponding path program 1 times [2023-11-26 12:00:31,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:31,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543969872] [2023-11-26 12:00:31,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:31,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:31,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:31,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:31,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:31,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543969872] [2023-11-26 12:00:31,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543969872] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:31,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:31,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:00:31,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108153849] [2023-11-26 12:00:31,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:31,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:00:31,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:32,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:00:32,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:00:32,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 61 [2023-11-26 12:00:32,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 57 transitions, 123 flow. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:32,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:32,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 61 [2023-11-26 12:00:32,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:32,377 INFO L124 PetriNetUnfolderBase]: 584/1161 cut-off events. [2023-11-26 12:00:32,378 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2023-11-26 12:00:32,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2108 conditions, 1161 events. 584/1161 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 7442 event pairs, 186 based on Foata normal form. 40/949 useless extension candidates. Maximal degree in co-relation 2009. Up to 461 conditions per place. [2023-11-26 12:00:32,395 INFO L140 encePairwiseOnDemand]: 53/61 looper letters, 53 selfloop transitions, 5 changer transitions 0/84 dead transitions. [2023-11-26 12:00:32,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 84 transitions, 299 flow [2023-11-26 12:00:32,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:00:32,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 12:00:32,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 173 transitions. [2023-11-26 12:00:32,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7090163934426229 [2023-11-26 12:00:32,411 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 173 transitions. [2023-11-26 12:00:32,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 173 transitions. [2023-11-26 12:00:32,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:32,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 173 transitions. [2023-11-26 12:00:32,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 43.25) internal successors, (173), 4 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:32,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:32,423 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:32,426 INFO L175 Difference]: Start difference. First operand has 56 places, 57 transitions, 123 flow. Second operand 4 states and 173 transitions. [2023-11-26 12:00:32,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 84 transitions, 299 flow [2023-11-26 12:00:32,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 84 transitions, 292 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-26 12:00:32,434 INFO L231 Difference]: Finished difference. Result has 58 places, 59 transitions, 152 flow [2023-11-26 12:00:32,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=152, PETRI_PLACES=58, PETRI_TRANSITIONS=59} [2023-11-26 12:00:32,440 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2023-11-26 12:00:32,440 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 59 transitions, 152 flow [2023-11-26 12:00:32,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:32,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:32,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:32,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 12:00:32,442 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-26 12:00:32,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:32,443 INFO L85 PathProgramCache]: Analyzing trace with hash 819491993, now seen corresponding path program 1 times [2023-11-26 12:00:32,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:32,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125494901] [2023-11-26 12:00:32,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:32,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:32,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:32,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:32,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:32,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125494901] [2023-11-26 12:00:32,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125494901] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:32,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:32,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:00:32,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082878733] [2023-11-26 12:00:32,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:32,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:00:32,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:32,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:00:32,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:00:32,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 61 [2023-11-26 12:00:32,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 59 transitions, 152 flow. Second operand has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:32,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:32,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 61 [2023-11-26 12:00:32,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:32,771 INFO L124 PetriNetUnfolderBase]: 438/1008 cut-off events. [2023-11-26 12:00:32,772 INFO L125 PetriNetUnfolderBase]: For 255/257 co-relation queries the response was YES. [2023-11-26 12:00:32,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1973 conditions, 1008 events. 438/1008 cut-off events. For 255/257 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 6752 event pairs, 105 based on Foata normal form. 2/866 useless extension candidates. Maximal degree in co-relation 1466. Up to 395 conditions per place. [2023-11-26 12:00:32,783 INFO L140 encePairwiseOnDemand]: 57/61 looper letters, 36 selfloop transitions, 4 changer transitions 0/70 dead transitions. [2023-11-26 12:00:32,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 70 transitions, 256 flow [2023-11-26 12:00:32,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:00:32,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 12:00:32,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 163 transitions. [2023-11-26 12:00:32,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6680327868852459 [2023-11-26 12:00:32,787 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 163 transitions. [2023-11-26 12:00:32,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 163 transitions. [2023-11-26 12:00:32,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:32,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 163 transitions. [2023-11-26 12:00:32,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:32,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:32,791 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:32,791 INFO L175 Difference]: Start difference. First operand has 58 places, 59 transitions, 152 flow. Second operand 4 states and 163 transitions. [2023-11-26 12:00:32,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 70 transitions, 256 flow [2023-11-26 12:00:32,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 70 transitions, 256 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 12:00:32,798 INFO L231 Difference]: Finished difference. Result has 60 places, 58 transitions, 158 flow [2023-11-26 12:00:32,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=158, PETRI_PLACES=60, PETRI_TRANSITIONS=58} [2023-11-26 12:00:32,799 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 4 predicate places. [2023-11-26 12:00:32,800 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 58 transitions, 158 flow [2023-11-26 12:00:32,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:32,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:32,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:32,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 12:00:32,801 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-26 12:00:32,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:32,802 INFO L85 PathProgramCache]: Analyzing trace with hash -365583231, now seen corresponding path program 1 times [2023-11-26 12:00:32,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:32,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577505645] [2023-11-26 12:00:32,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:32,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:32,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:32,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:32,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:32,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577505645] [2023-11-26 12:00:32,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577505645] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:32,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:32,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:00:32,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301897534] [2023-11-26 12:00:32,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:32,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:00:32,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:32,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:00:32,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:00:32,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 61 [2023-11-26 12:00:32,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 58 transitions, 158 flow. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:32,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:32,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 61 [2023-11-26 12:00:32,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:33,140 INFO L124 PetriNetUnfolderBase]: 440/992 cut-off events. [2023-11-26 12:00:33,141 INFO L125 PetriNetUnfolderBase]: For 471/473 co-relation queries the response was YES. [2023-11-26 12:00:33,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2023 conditions, 992 events. 440/992 cut-off events. For 471/473 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 6532 event pairs, 105 based on Foata normal form. 22/870 useless extension candidates. Maximal degree in co-relation 1510. Up to 415 conditions per place. [2023-11-26 12:00:33,150 INFO L140 encePairwiseOnDemand]: 57/61 looper letters, 37 selfloop transitions, 4 changer transitions 0/69 dead transitions. [2023-11-26 12:00:33,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 69 transitions, 262 flow [2023-11-26 12:00:33,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:00:33,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 12:00:33,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 159 transitions. [2023-11-26 12:00:33,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6516393442622951 [2023-11-26 12:00:33,153 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 159 transitions. [2023-11-26 12:00:33,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 159 transitions. [2023-11-26 12:00:33,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:33,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 159 transitions. [2023-11-26 12:00:33,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:33,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:33,157 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:33,157 INFO L175 Difference]: Start difference. First operand has 60 places, 58 transitions, 158 flow. Second operand 4 states and 159 transitions. [2023-11-26 12:00:33,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 69 transitions, 262 flow [2023-11-26 12:00:33,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 69 transitions, 254 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-26 12:00:33,162 INFO L231 Difference]: Finished difference. Result has 59 places, 57 transitions, 154 flow [2023-11-26 12:00:33,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=154, PETRI_PLACES=59, PETRI_TRANSITIONS=57} [2023-11-26 12:00:33,164 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 3 predicate places. [2023-11-26 12:00:33,164 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 57 transitions, 154 flow [2023-11-26 12:00:33,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:33,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:33,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:33,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 12:00:33,165 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-26 12:00:33,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:33,166 INFO L85 PathProgramCache]: Analyzing trace with hash -457146777, now seen corresponding path program 1 times [2023-11-26 12:00:33,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:33,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920452674] [2023-11-26 12:00:33,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:33,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:33,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:33,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:33,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:33,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920452674] [2023-11-26 12:00:33,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920452674] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:33,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:33,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:00:33,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491160353] [2023-11-26 12:00:33,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:33,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:00:33,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:33,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:00:33,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:00:33,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 61 [2023-11-26 12:00:33,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 57 transitions, 154 flow. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:33,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:33,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 61 [2023-11-26 12:00:33,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:33,485 INFO L124 PetriNetUnfolderBase]: 435/986 cut-off events. [2023-11-26 12:00:33,485 INFO L125 PetriNetUnfolderBase]: For 406/424 co-relation queries the response was YES. [2023-11-26 12:00:33,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1933 conditions, 986 events. 435/986 cut-off events. For 406/424 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 6596 event pairs, 128 based on Foata normal form. 66/856 useless extension candidates. Maximal degree in co-relation 1074. Up to 363 conditions per place. [2023-11-26 12:00:33,494 INFO L140 encePairwiseOnDemand]: 56/61 looper letters, 40 selfloop transitions, 3 changer transitions 0/69 dead transitions. [2023-11-26 12:00:33,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 69 transitions, 289 flow [2023-11-26 12:00:33,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:00:33,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 12:00:33,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 161 transitions. [2023-11-26 12:00:33,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6598360655737705 [2023-11-26 12:00:33,497 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 161 transitions. [2023-11-26 12:00:33,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 161 transitions. [2023-11-26 12:00:33,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:33,498 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 161 transitions. [2023-11-26 12:00:33,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:33,500 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:33,500 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:33,501 INFO L175 Difference]: Start difference. First operand has 59 places, 57 transitions, 154 flow. Second operand 4 states and 161 transitions. [2023-11-26 12:00:33,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 69 transitions, 289 flow [2023-11-26 12:00:33,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 69 transitions, 275 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-26 12:00:33,504 INFO L231 Difference]: Finished difference. Result has 57 places, 55 transitions, 148 flow [2023-11-26 12:00:33,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=148, PETRI_PLACES=57, PETRI_TRANSITIONS=55} [2023-11-26 12:00:33,506 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 1 predicate places. [2023-11-26 12:00:33,506 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 55 transitions, 148 flow [2023-11-26 12:00:33,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:33,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:33,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:33,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 12:00:33,507 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-26 12:00:33,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:33,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1551821243, now seen corresponding path program 1 times [2023-11-26 12:00:33,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:33,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562719282] [2023-11-26 12:00:33,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:33,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:33,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:33,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:33,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:33,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562719282] [2023-11-26 12:00:33,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562719282] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:33,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:33,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:00:33,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681005113] [2023-11-26 12:00:33,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:33,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 12:00:33,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:33,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 12:00:33,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:00:33,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 61 [2023-11-26 12:00:33,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 55 transitions, 148 flow. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:33,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:33,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 61 [2023-11-26 12:00:33,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:33,921 INFO L124 PetriNetUnfolderBase]: 601/1135 cut-off events. [2023-11-26 12:00:33,922 INFO L125 PetriNetUnfolderBase]: For 209/209 co-relation queries the response was YES. [2023-11-26 12:00:33,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2429 conditions, 1135 events. 601/1135 cut-off events. For 209/209 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 6923 event pairs, 97 based on Foata normal form. 0/1048 useless extension candidates. Maximal degree in co-relation 1876. Up to 497 conditions per place. [2023-11-26 12:00:33,934 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 49 selfloop transitions, 6 changer transitions 0/78 dead transitions. [2023-11-26 12:00:33,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 78 transitions, 316 flow [2023-11-26 12:00:33,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 12:00:33,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 12:00:33,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 200 transitions. [2023-11-26 12:00:33,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6557377049180327 [2023-11-26 12:00:33,937 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 200 transitions. [2023-11-26 12:00:33,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 200 transitions. [2023-11-26 12:00:33,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:33,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 200 transitions. [2023-11-26 12:00:33,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:33,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 61.0) internal successors, (366), 6 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:33,941 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 61.0) internal successors, (366), 6 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:33,942 INFO L175 Difference]: Start difference. First operand has 57 places, 55 transitions, 148 flow. Second operand 5 states and 200 transitions. [2023-11-26 12:00:33,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 78 transitions, 316 flow [2023-11-26 12:00:33,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 78 transitions, 302 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-26 12:00:33,949 INFO L231 Difference]: Finished difference. Result has 57 places, 54 transitions, 152 flow [2023-11-26 12:00:33,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=152, PETRI_PLACES=57, PETRI_TRANSITIONS=54} [2023-11-26 12:00:33,954 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 1 predicate places. [2023-11-26 12:00:33,954 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 54 transitions, 152 flow [2023-11-26 12:00:33,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:33,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:33,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:33,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 12:00:33,955 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-26 12:00:33,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:33,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1551822268, now seen corresponding path program 1 times [2023-11-26 12:00:33,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:33,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952982698] [2023-11-26 12:00:33,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:33,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:33,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:34,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:34,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:34,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952982698] [2023-11-26 12:00:34,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952982698] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:34,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:34,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:00:34,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243340048] [2023-11-26 12:00:34,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:34,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:00:34,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:34,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:00:34,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:00:34,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 61 [2023-11-26 12:00:34,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 54 transitions, 152 flow. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:34,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:34,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 61 [2023-11-26 12:00:34,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:34,253 INFO L124 PetriNetUnfolderBase]: 479/1016 cut-off events. [2023-11-26 12:00:34,253 INFO L125 PetriNetUnfolderBase]: For 469/469 co-relation queries the response was YES. [2023-11-26 12:00:34,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2125 conditions, 1016 events. 479/1016 cut-off events. For 469/469 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 6547 event pairs, 197 based on Foata normal form. 20/910 useless extension candidates. Maximal degree in co-relation 1129. Up to 463 conditions per place. [2023-11-26 12:00:34,262 INFO L140 encePairwiseOnDemand]: 56/61 looper letters, 51 selfloop transitions, 4 changer transitions 0/78 dead transitions. [2023-11-26 12:00:34,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 78 transitions, 310 flow [2023-11-26 12:00:34,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:00:34,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 12:00:34,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 168 transitions. [2023-11-26 12:00:34,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6885245901639344 [2023-11-26 12:00:34,265 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 168 transitions. [2023-11-26 12:00:34,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 168 transitions. [2023-11-26 12:00:34,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:34,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 168 transitions. [2023-11-26 12:00:34,266 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:34,267 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:34,267 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:34,267 INFO L175 Difference]: Start difference. First operand has 57 places, 54 transitions, 152 flow. Second operand 4 states and 168 transitions. [2023-11-26 12:00:34,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 78 transitions, 310 flow [2023-11-26 12:00:34,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 78 transitions, 298 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-26 12:00:34,272 INFO L231 Difference]: Finished difference. Result has 56 places, 53 transitions, 142 flow [2023-11-26 12:00:34,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=142, PETRI_PLACES=56, PETRI_TRANSITIONS=53} [2023-11-26 12:00:34,273 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 0 predicate places. [2023-11-26 12:00:34,273 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 53 transitions, 142 flow [2023-11-26 12:00:34,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:34,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:34,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:34,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 12:00:34,275 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-26 12:00:34,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:34,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1286647640, now seen corresponding path program 1 times [2023-11-26 12:00:34,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:34,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056148355] [2023-11-26 12:00:34,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:34,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:34,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:34,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:34,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:34,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056148355] [2023-11-26 12:00:34,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056148355] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:34,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:34,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:00:34,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689887887] [2023-11-26 12:00:34,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:34,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:00:34,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:34,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:00:34,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:00:34,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 61 [2023-11-26 12:00:34,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 53 transitions, 142 flow. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:34,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:34,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 61 [2023-11-26 12:00:34,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:34,498 INFO L124 PetriNetUnfolderBase]: 356/872 cut-off events. [2023-11-26 12:00:34,498 INFO L125 PetriNetUnfolderBase]: For 274/288 co-relation queries the response was YES. [2023-11-26 12:00:34,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1626 conditions, 872 events. 356/872 cut-off events. For 274/288 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 5906 event pairs, 128 based on Foata normal form. 14/749 useless extension candidates. Maximal degree in co-relation 921. Up to 300 conditions per place. [2023-11-26 12:00:34,506 INFO L140 encePairwiseOnDemand]: 57/61 looper letters, 38 selfloop transitions, 3 changer transitions 0/66 dead transitions. [2023-11-26 12:00:34,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 66 transitions, 274 flow [2023-11-26 12:00:34,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:00:34,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 12:00:34,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 162 transitions. [2023-11-26 12:00:34,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6639344262295082 [2023-11-26 12:00:34,509 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 162 transitions. [2023-11-26 12:00:34,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 162 transitions. [2023-11-26 12:00:34,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:34,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 162 transitions. [2023-11-26 12:00:34,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:34,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:34,512 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:34,512 INFO L175 Difference]: Start difference. First operand has 56 places, 53 transitions, 142 flow. Second operand 4 states and 162 transitions. [2023-11-26 12:00:34,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 66 transitions, 274 flow [2023-11-26 12:00:34,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 66 transitions, 263 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 12:00:34,515 INFO L231 Difference]: Finished difference. Result has 56 places, 52 transitions, 140 flow [2023-11-26 12:00:34,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=140, PETRI_PLACES=56, PETRI_TRANSITIONS=52} [2023-11-26 12:00:34,516 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 0 predicate places. [2023-11-26 12:00:34,517 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 52 transitions, 140 flow [2023-11-26 12:00:34,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:34,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:34,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:34,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 12:00:34,518 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-26 12:00:34,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:34,519 INFO L85 PathProgramCache]: Analyzing trace with hash 861818820, now seen corresponding path program 1 times [2023-11-26 12:00:34,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:34,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848774830] [2023-11-26 12:00:34,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:34,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:34,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:34,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:34,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:34,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848774830] [2023-11-26 12:00:34,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848774830] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:34,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:34,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 12:00:34,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783172621] [2023-11-26 12:00:34,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:34,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:00:34,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:34,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:00:34,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:00:34,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 61 [2023-11-26 12:00:34,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 52 transitions, 140 flow. Second operand has 6 states, 6 states have (on average 27.166666666666668) internal successors, (163), 6 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:34,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:34,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 61 [2023-11-26 12:00:34,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:34,965 INFO L124 PetriNetUnfolderBase]: 581/1086 cut-off events. [2023-11-26 12:00:34,966 INFO L125 PetriNetUnfolderBase]: For 331/333 co-relation queries the response was YES. [2023-11-26 12:00:34,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2331 conditions, 1086 events. 581/1086 cut-off events. For 331/333 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 6534 event pairs, 95 based on Foata normal form. 42/1041 useless extension candidates. Maximal degree in co-relation 1789. Up to 285 conditions per place. [2023-11-26 12:00:34,975 INFO L140 encePairwiseOnDemand]: 53/61 looper letters, 58 selfloop transitions, 9 changer transitions 0/88 dead transitions. [2023-11-26 12:00:34,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 88 transitions, 364 flow [2023-11-26 12:00:34,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 12:00:34,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 12:00:34,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 222 transitions. [2023-11-26 12:00:34,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6065573770491803 [2023-11-26 12:00:34,977 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 222 transitions. [2023-11-26 12:00:34,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 222 transitions. [2023-11-26 12:00:34,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:34,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 222 transitions. [2023-11-26 12:00:34,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 37.0) internal successors, (222), 6 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:34,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 61.0) internal successors, (427), 7 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:34,980 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 61.0) internal successors, (427), 7 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:34,980 INFO L175 Difference]: Start difference. First operand has 56 places, 52 transitions, 140 flow. Second operand 6 states and 222 transitions. [2023-11-26 12:00:34,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 88 transitions, 364 flow [2023-11-26 12:00:34,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 88 transitions, 346 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-26 12:00:34,987 INFO L231 Difference]: Finished difference. Result has 58 places, 52 transitions, 159 flow [2023-11-26 12:00:34,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=159, PETRI_PLACES=58, PETRI_TRANSITIONS=52} [2023-11-26 12:00:34,991 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2023-11-26 12:00:34,991 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 52 transitions, 159 flow [2023-11-26 12:00:34,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.166666666666668) internal successors, (163), 6 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:34,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:34,992 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:34,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 12:00:34,992 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-26 12:00:34,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:34,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1893897281, now seen corresponding path program 1 times [2023-11-26 12:00:34,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:34,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413641905] [2023-11-26 12:00:34,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:34,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:35,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:35,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:35,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:35,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413641905] [2023-11-26 12:00:35,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413641905] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:35,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:35,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 12:00:35,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908263405] [2023-11-26 12:00:35,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:35,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 12:00:35,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:35,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 12:00:35,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:00:35,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 61 [2023-11-26 12:00:35,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 52 transitions, 159 flow. Second operand has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:35,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:35,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 61 [2023-11-26 12:00:35,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:35,414 INFO L124 PetriNetUnfolderBase]: 576/1033 cut-off events. [2023-11-26 12:00:35,414 INFO L125 PetriNetUnfolderBase]: For 584/584 co-relation queries the response was YES. [2023-11-26 12:00:35,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2443 conditions, 1033 events. 576/1033 cut-off events. For 584/584 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 5926 event pairs, 195 based on Foata normal form. 20/953 useless extension candidates. Maximal degree in co-relation 1349. Up to 483 conditions per place. [2023-11-26 12:00:35,424 INFO L140 encePairwiseOnDemand]: 54/61 looper letters, 74 selfloop transitions, 8 changer transitions 0/101 dead transitions. [2023-11-26 12:00:35,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 101 transitions, 429 flow [2023-11-26 12:00:35,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 12:00:35,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 12:00:35,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 239 transitions. [2023-11-26 12:00:35,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6530054644808743 [2023-11-26 12:00:35,426 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 239 transitions. [2023-11-26 12:00:35,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 239 transitions. [2023-11-26 12:00:35,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:35,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 239 transitions. [2023-11-26 12:00:35,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 39.833333333333336) internal successors, (239), 6 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:35,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 61.0) internal successors, (427), 7 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:35,429 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 61.0) internal successors, (427), 7 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:35,429 INFO L175 Difference]: Start difference. First operand has 58 places, 52 transitions, 159 flow. Second operand 6 states and 239 transitions. [2023-11-26 12:00:35,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 101 transitions, 429 flow [2023-11-26 12:00:35,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 101 transitions, 411 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-11-26 12:00:35,436 INFO L231 Difference]: Finished difference. Result has 59 places, 53 transitions, 170 flow [2023-11-26 12:00:35,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=170, PETRI_PLACES=59, PETRI_TRANSITIONS=53} [2023-11-26 12:00:35,437 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 3 predicate places. [2023-11-26 12:00:35,437 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 53 transitions, 170 flow [2023-11-26 12:00:35,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:35,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:35,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:35,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 12:00:35,438 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-26 12:00:35,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:35,438 INFO L85 PathProgramCache]: Analyzing trace with hash 481231146, now seen corresponding path program 1 times [2023-11-26 12:00:35,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:35,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986862610] [2023-11-26 12:00:35,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:35,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:35,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:35,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:35,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:35,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986862610] [2023-11-26 12:00:35,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986862610] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:35,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:35,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:00:35,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002259288] [2023-11-26 12:00:35,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:35,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 12:00:35,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:35,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 12:00:35,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:00:35,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 61 [2023-11-26 12:00:35,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 53 transitions, 170 flow. Second operand has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:35,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:35,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 61 [2023-11-26 12:00:35,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:35,762 INFO L124 PetriNetUnfolderBase]: 552/1028 cut-off events. [2023-11-26 12:00:35,763 INFO L125 PetriNetUnfolderBase]: For 1241/1305 co-relation queries the response was YES. [2023-11-26 12:00:35,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2434 conditions, 1028 events. 552/1028 cut-off events. For 1241/1305 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 6034 event pairs, 129 based on Foata normal form. 64/966 useless extension candidates. Maximal degree in co-relation 1599. Up to 363 conditions per place. [2023-11-26 12:00:35,772 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 61 selfloop transitions, 5 changer transitions 0/85 dead transitions. [2023-11-26 12:00:35,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 85 transitions, 450 flow [2023-11-26 12:00:35,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 12:00:35,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 12:00:35,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 200 transitions. [2023-11-26 12:00:35,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6557377049180327 [2023-11-26 12:00:35,774 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 200 transitions. [2023-11-26 12:00:35,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 200 transitions. [2023-11-26 12:00:35,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:35,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 200 transitions. [2023-11-26 12:00:35,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:35,776 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 61.0) internal successors, (366), 6 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:35,776 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 61.0) internal successors, (366), 6 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:35,776 INFO L175 Difference]: Start difference. First operand has 59 places, 53 transitions, 170 flow. Second operand 5 states and 200 transitions. [2023-11-26 12:00:35,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 85 transitions, 450 flow [2023-11-26 12:00:35,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 85 transitions, 410 flow, removed 9 selfloop flow, removed 4 redundant places. [2023-11-26 12:00:35,780 INFO L231 Difference]: Finished difference. Result has 59 places, 53 transitions, 169 flow [2023-11-26 12:00:35,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=169, PETRI_PLACES=59, PETRI_TRANSITIONS=53} [2023-11-26 12:00:35,781 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 3 predicate places. [2023-11-26 12:00:35,782 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 53 transitions, 169 flow [2023-11-26 12:00:35,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:35,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:35,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:35,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-26 12:00:35,783 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-26 12:00:35,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:35,783 INFO L85 PathProgramCache]: Analyzing trace with hash 481232171, now seen corresponding path program 1 times [2023-11-26 12:00:35,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:35,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267501546] [2023-11-26 12:00:35,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:35,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:35,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:35,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:35,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:35,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267501546] [2023-11-26 12:00:35,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267501546] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:35,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:35,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:00:35,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658190818] [2023-11-26 12:00:35,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:35,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:00:35,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:35,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:00:35,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:00:35,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 61 [2023-11-26 12:00:35,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 53 transitions, 169 flow. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:35,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:35,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 61 [2023-11-26 12:00:35,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:36,049 INFO L124 PetriNetUnfolderBase]: 615/1263 cut-off events. [2023-11-26 12:00:36,049 INFO L125 PetriNetUnfolderBase]: For 946/1014 co-relation queries the response was YES. [2023-11-26 12:00:36,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2821 conditions, 1263 events. 615/1263 cut-off events. For 946/1014 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 8248 event pairs, 261 based on Foata normal form. 68/1217 useless extension candidates. Maximal degree in co-relation 1882. Up to 579 conditions per place. [2023-11-26 12:00:36,062 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 63 selfloop transitions, 5 changer transitions 0/88 dead transitions. [2023-11-26 12:00:36,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 88 transitions, 437 flow [2023-11-26 12:00:36,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:00:36,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 12:00:36,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 169 transitions. [2023-11-26 12:00:36,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6926229508196722 [2023-11-26 12:00:36,064 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 169 transitions. [2023-11-26 12:00:36,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 169 transitions. [2023-11-26 12:00:36,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:36,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 169 transitions. [2023-11-26 12:00:36,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:36,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:36,066 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:36,066 INFO L175 Difference]: Start difference. First operand has 59 places, 53 transitions, 169 flow. Second operand 4 states and 169 transitions. [2023-11-26 12:00:36,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 88 transitions, 437 flow [2023-11-26 12:00:36,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 88 transitions, 428 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-26 12:00:36,071 INFO L231 Difference]: Finished difference. Result has 61 places, 55 transitions, 189 flow [2023-11-26 12:00:36,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=189, PETRI_PLACES=61, PETRI_TRANSITIONS=55} [2023-11-26 12:00:36,072 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 5 predicate places. [2023-11-26 12:00:36,072 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 55 transitions, 189 flow [2023-11-26 12:00:36,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:36,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:36,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:36,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-26 12:00:36,073 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-26 12:00:36,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:36,073 INFO L85 PathProgramCache]: Analyzing trace with hash 2033264206, now seen corresponding path program 1 times [2023-11-26 12:00:36,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:36,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469145895] [2023-11-26 12:00:36,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:36,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:36,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:36,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:36,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:36,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469145895] [2023-11-26 12:00:36,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469145895] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:36,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:36,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 12:00:36,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772108301] [2023-11-26 12:00:36,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:36,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:00:36,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:36,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:00:36,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:00:36,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 61 [2023-11-26 12:00:36,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 55 transitions, 189 flow. Second operand has 6 states, 6 states have (on average 27.5) internal successors, (165), 6 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:36,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:36,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 61 [2023-11-26 12:00:36,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:36,539 INFO L124 PetriNetUnfolderBase]: 732/1352 cut-off events. [2023-11-26 12:00:36,539 INFO L125 PetriNetUnfolderBase]: For 1358/1446 co-relation queries the response was YES. [2023-11-26 12:00:36,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3341 conditions, 1352 events. 732/1352 cut-off events. For 1358/1446 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 8299 event pairs, 129 based on Foata normal form. 136/1398 useless extension candidates. Maximal degree in co-relation 2235. Up to 339 conditions per place. [2023-11-26 12:00:36,552 INFO L140 encePairwiseOnDemand]: 53/61 looper letters, 75 selfloop transitions, 9 changer transitions 0/103 dead transitions. [2023-11-26 12:00:36,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 103 transitions, 543 flow [2023-11-26 12:00:36,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 12:00:36,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 12:00:36,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 222 transitions. [2023-11-26 12:00:36,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6065573770491803 [2023-11-26 12:00:36,555 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 222 transitions. [2023-11-26 12:00:36,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 222 transitions. [2023-11-26 12:00:36,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:36,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 222 transitions. [2023-11-26 12:00:36,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 37.0) internal successors, (222), 6 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:36,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 61.0) internal successors, (427), 7 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:36,558 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 61.0) internal successors, (427), 7 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:36,558 INFO L175 Difference]: Start difference. First operand has 61 places, 55 transitions, 189 flow. Second operand 6 states and 222 transitions. [2023-11-26 12:00:36,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 103 transitions, 543 flow [2023-11-26 12:00:36,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 103 transitions, 540 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 12:00:36,565 INFO L231 Difference]: Finished difference. Result has 65 places, 55 transitions, 211 flow [2023-11-26 12:00:36,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=211, PETRI_PLACES=65, PETRI_TRANSITIONS=55} [2023-11-26 12:00:36,567 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 9 predicate places. [2023-11-26 12:00:36,567 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 55 transitions, 211 flow [2023-11-26 12:00:36,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.5) internal successors, (165), 6 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:36,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 12:00:36,567 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:36,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-26 12:00:36,568 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-26 12:00:36,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:00:36,569 INFO L85 PathProgramCache]: Analyzing trace with hash -446001392, now seen corresponding path program 1 times [2023-11-26 12:00:36,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:00:36,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581040844] [2023-11-26 12:00:36,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:00:36,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:00:36,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:00:36,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:00:36,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:00:36,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581040844] [2023-11-26 12:00:36,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581040844] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:00:36,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:00:36,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:00:36,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239681570] [2023-11-26 12:00:36,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:00:36,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:00:36,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:00:36,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:00:36,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:00:36,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 61 [2023-11-26 12:00:36,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 55 transitions, 211 flow. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:36,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 12:00:36,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 61 [2023-11-26 12:00:36,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 12:00:36,899 INFO L124 PetriNetUnfolderBase]: 732/1324 cut-off events. [2023-11-26 12:00:36,899 INFO L125 PetriNetUnfolderBase]: For 1920/2009 co-relation queries the response was YES. [2023-11-26 12:00:36,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3632 conditions, 1324 events. 732/1324 cut-off events. For 1920/2009 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 8032 event pairs, 261 based on Foata normal form. 113/1364 useless extension candidates. Maximal degree in co-relation 2440. Up to 603 conditions per place. [2023-11-26 12:00:36,907 INFO L140 encePairwiseOnDemand]: 56/61 looper letters, 0 selfloop transitions, 0 changer transitions 87/87 dead transitions. [2023-11-26 12:00:36,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 87 transitions, 472 flow [2023-11-26 12:00:36,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:00:36,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 12:00:36,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 166 transitions. [2023-11-26 12:00:36,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.680327868852459 [2023-11-26 12:00:36,909 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 166 transitions. [2023-11-26 12:00:36,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 166 transitions. [2023-11-26 12:00:36,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 12:00:36,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 166 transitions. [2023-11-26 12:00:36,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:36,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:36,912 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:36,912 INFO L175 Difference]: Start difference. First operand has 65 places, 55 transitions, 211 flow. Second operand 4 states and 166 transitions. [2023-11-26 12:00:36,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 87 transitions, 472 flow [2023-11-26 12:00:36,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 87 transitions, 458 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-26 12:00:36,918 INFO L231 Difference]: Finished difference. Result has 63 places, 0 transitions, 0 flow [2023-11-26 12:00:36,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=63, PETRI_TRANSITIONS=0} [2023-11-26 12:00:36,920 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 7 predicate places. [2023-11-26 12:00:36,920 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 0 transitions, 0 flow [2023-11-26 12:00:36,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:00:36,923 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 26 remaining) [2023-11-26 12:00:36,923 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 26 remaining) [2023-11-26 12:00:36,924 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 26 remaining) [2023-11-26 12:00:36,924 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 26 remaining) [2023-11-26 12:00:36,924 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 26 remaining) [2023-11-26 12:00:36,924 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 26 remaining) [2023-11-26 12:00:36,925 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 26 remaining) [2023-11-26 12:00:36,925 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 26 remaining) [2023-11-26 12:00:36,925 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 26 remaining) [2023-11-26 12:00:36,925 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 26 remaining) [2023-11-26 12:00:36,925 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 26 remaining) [2023-11-26 12:00:36,926 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 26 remaining) [2023-11-26 12:00:36,926 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 26 remaining) [2023-11-26 12:00:36,926 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 26 remaining) [2023-11-26 12:00:36,926 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 26 remaining) [2023-11-26 12:00:36,927 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 26 remaining) [2023-11-26 12:00:36,927 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 26 remaining) [2023-11-26 12:00:36,927 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 26 remaining) [2023-11-26 12:00:36,927 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 26 remaining) [2023-11-26 12:00:36,927 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 26 remaining) [2023-11-26 12:00:36,928 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 26 remaining) [2023-11-26 12:00:36,928 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 26 remaining) [2023-11-26 12:00:36,928 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 26 remaining) [2023-11-26 12:00:36,928 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 26 remaining) [2023-11-26 12:00:36,928 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 26 remaining) [2023-11-26 12:00:36,931 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 26 remaining) [2023-11-26 12:00:36,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-26 12:00:36,931 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:00:36,938 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-26 12:00:36,938 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-26 12:00:36,947 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 12:00:36 BasicIcfg [2023-11-26 12:00:36,947 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-26 12:00:36,948 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 12:00:36,948 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 12:00:36,948 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 12:00:36,949 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:00:31" (3/4) ... [2023-11-26 12:00:36,950 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-26 12:00:36,953 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-26 12:00:36,953 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-26 12:00:36,974 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 73 nodes and edges [2023-11-26 12:00:36,975 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2023-11-26 12:00:36,975 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-26 12:00:36,975 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-26 12:00:37,083 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a45d17c1-7bb2-498d-9ed3-b73eee619649/bin/uautomizer-verify-VRDe98Ueme/witness.graphml [2023-11-26 12:00:37,084 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a45d17c1-7bb2-498d-9ed3-b73eee619649/bin/uautomizer-verify-VRDe98Ueme/witness.yml [2023-11-26 12:00:37,084 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 12:00:37,085 INFO L158 Benchmark]: Toolchain (without parser) took 6992.90ms. Allocated memory was 142.6MB in the beginning and 247.5MB in the end (delta: 104.9MB). Free memory was 97.4MB in the beginning and 212.0MB in the end (delta: -114.6MB). Peak memory consumption was 132.3MB. Max. memory is 16.1GB. [2023-11-26 12:00:37,085 INFO L158 Benchmark]: CDTParser took 1.21ms. Allocated memory is still 142.6MB. Free memory was 89.4MB in the beginning and 89.2MB in the end (delta: 151.1kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 12:00:37,086 INFO L158 Benchmark]: CACSL2BoogieTranslator took 248.66ms. Allocated memory is still 142.6MB. Free memory was 97.0MB in the beginning and 85.7MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-26 12:00:37,086 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.15ms. Allocated memory is still 142.6MB. Free memory was 85.7MB in the beginning and 83.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 12:00:37,086 INFO L158 Benchmark]: Boogie Preprocessor took 47.45ms. Allocated memory is still 142.6MB. Free memory was 83.6MB in the beginning and 81.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 12:00:37,087 INFO L158 Benchmark]: RCFGBuilder took 979.50ms. Allocated memory was 142.6MB in the beginning and 205.5MB in the end (delta: 62.9MB). Free memory was 81.5MB in the beginning and 160.2MB in the end (delta: -78.6MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2023-11-26 12:00:37,087 INFO L158 Benchmark]: TraceAbstraction took 5528.17ms. Allocated memory was 205.5MB in the beginning and 247.5MB in the end (delta: 41.9MB). Free memory was 159.1MB in the beginning and 72.8MB in the end (delta: 86.3MB). Peak memory consumption was 128.2MB. Max. memory is 16.1GB. [2023-11-26 12:00:37,088 INFO L158 Benchmark]: Witness Printer took 136.47ms. Allocated memory is still 247.5MB. Free memory was 72.8MB in the beginning and 212.0MB in the end (delta: -139.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 12:00:37,090 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.21ms. Allocated memory is still 142.6MB. Free memory was 89.4MB in the beginning and 89.2MB in the end (delta: 151.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 248.66ms. Allocated memory is still 142.6MB. Free memory was 97.0MB in the beginning and 85.7MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.15ms. Allocated memory is still 142.6MB. Free memory was 85.7MB in the beginning and 83.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.45ms. Allocated memory is still 142.6MB. Free memory was 83.6MB in the beginning and 81.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 979.50ms. Allocated memory was 142.6MB in the beginning and 205.5MB in the end (delta: 62.9MB). Free memory was 81.5MB in the beginning and 160.2MB in the end (delta: -78.6MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * TraceAbstraction took 5528.17ms. Allocated memory was 205.5MB in the beginning and 247.5MB in the end (delta: 41.9MB). Free memory was 159.1MB in the beginning and 72.8MB in the end (delta: 86.3MB). Peak memory consumption was 128.2MB. Max. memory is 16.1GB. * Witness Printer took 136.47ms. Allocated memory is still 247.5MB. Free memory was 72.8MB in the beginning and 212.0MB in the end (delta: -139.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 78]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 78]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 79]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 80]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 79]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 80]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 78]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 78]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 79]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 80]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 79]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 80]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 100 locations, 26 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: 5.4s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 974 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 776 mSDsluCounter, 122 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 69 mSDsCounter, 67 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1662 IncrementalHoareTripleChecker+Invalid, 1729 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 67 mSolverCounterUnsat, 53 mSDtfsCounter, 1662 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=211occurred in iteration=12, InterpolantAutomatonStates: 60, 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 137 NumberOfCodeBlocks, 137 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 124 ConstructedInterpolants, 0 QuantifiedInterpolants, 426 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 0/0 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 12 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-26 12:00:37,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a45d17c1-7bb2-498d-9ed3-b73eee619649/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (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