./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-min-array.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750d2178-334d-4457-874e-04923605ad49/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750d2178-334d-4457-874e-04923605ad49/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750d2178-334d-4457-874e-04923605ad49/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750d2178-334d-4457-874e-04923605ad49/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-min-array.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750d2178-334d-4457-874e-04923605ad49/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750d2178-334d-4457-874e-04923605ad49/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2261d9b3f7623cbd5155b35c39657066d179b87a48a9848bd1f196c713477a75 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 00:56:22,888 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 00:56:22,949 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750d2178-334d-4457-874e-04923605ad49/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 00:56:22,954 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 00:56:22,955 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 00:56:22,980 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 00:56:22,980 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 00:56:22,981 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 00:56:22,982 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 00:56:22,982 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 00:56:22,983 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 00:56:22,983 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 00:56:22,984 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 00:56:22,985 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 00:56:22,985 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 00:56:22,986 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 00:56:22,986 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 00:56:22,989 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 00:56:22,989 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 00:56:22,990 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 00:56:22,990 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 00:56:22,991 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 00:56:22,991 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 00:56:22,992 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 00:56:22,992 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 00:56:22,993 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 00:56:22,993 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 00:56:22,994 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 00:56:22,994 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 00:56:22,994 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 00:56:22,995 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 00:56:22,995 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 00:56:22,996 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 00:56:22,996 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:56:22,996 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 00:56:22,996 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 00:56:22,996 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 00:56:22,997 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 00:56:22,997 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 00:56:22,997 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 00:56:22,997 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 00:56:22,998 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 00:56:22,998 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 00:56:22,998 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 00:56:22,999 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_750d2178-334d-4457-874e-04923605ad49/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750d2178-334d-4457-874e-04923605ad49/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2261d9b3f7623cbd5155b35c39657066d179b87a48a9848bd1f196c713477a75 [2023-11-29 00:56:23,198 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 00:56:23,219 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 00:56:23,222 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 00:56:23,223 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 00:56:23,223 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 00:56:23,225 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750d2178-334d-4457-874e-04923605ad49/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/popl20-more-min-array.wvr.c [2023-11-29 00:56:26,017 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:56:26,191 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:56:26,191 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750d2178-334d-4457-874e-04923605ad49/sv-benchmarks/c/weaver/popl20-more-min-array.wvr.c [2023-11-29 00:56:26,198 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750d2178-334d-4457-874e-04923605ad49/bin/uautomizer-verify-BQ2R08f2Ya/data/cca088f2c/1af3e08c06464e9392c814f08bf6c329/FLAG5d1bda717 [2023-11-29 00:56:26,210 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750d2178-334d-4457-874e-04923605ad49/bin/uautomizer-verify-BQ2R08f2Ya/data/cca088f2c/1af3e08c06464e9392c814f08bf6c329 [2023-11-29 00:56:26,212 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:56:26,213 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:56:26,215 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:56:26,215 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:56:26,220 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:56:26,220 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:56:26" (1/1) ... [2023-11-29 00:56:26,221 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1988a537 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:56:26, skipping insertion in model container [2023-11-29 00:56:26,222 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:56:26" (1/1) ... [2023-11-29 00:56:26,248 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:56:26,415 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:56:26,425 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 00:56:26,449 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:56:26,457 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 00:56:26,457 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 00:56:26,464 INFO L206 MainTranslator]: Completed translation [2023-11-29 00:56:26,464 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:56:26 WrapperNode [2023-11-29 00:56:26,464 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 00:56:26,465 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 00:56:26,465 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 00:56:26,465 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 00:56:26,471 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:56:26" (1/1) ... [2023-11-29 00:56:26,478 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:56:26" (1/1) ... [2023-11-29 00:56:26,500 INFO L138 Inliner]: procedures = 24, calls = 44, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 108 [2023-11-29 00:56:26,500 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 00:56:26,501 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 00:56:26,501 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 00:56:26,501 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 00:56:26,514 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:56:26" (1/1) ... [2023-11-29 00:56:26,514 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:56:26" (1/1) ... [2023-11-29 00:56:26,518 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:56:26" (1/1) ... [2023-11-29 00:56:26,534 INFO L175 MemorySlicer]: Split 15 memory accesses to 5 slices as follows [2, 7, 2, 2, 2]. 47 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2023-11-29 00:56:26,534 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:56:26" (1/1) ... [2023-11-29 00:56:26,535 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:56:26" (1/1) ... [2023-11-29 00:56:26,544 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:56:26" (1/1) ... [2023-11-29 00:56:26,549 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:56:26" (1/1) ... [2023-11-29 00:56:26,551 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:56:26" (1/1) ... [2023-11-29 00:56:26,553 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:56:26" (1/1) ... [2023-11-29 00:56:26,556 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 00:56:26,557 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 00:56:26,557 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 00:56:26,558 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 00:56:26,558 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:56:26" (1/1) ... [2023-11-29 00:56:26,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:56:26,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750d2178-334d-4457-874e-04923605ad49/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:56:26,582 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750d2178-334d-4457-874e-04923605ad49/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 00:56:26,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750d2178-334d-4457-874e-04923605ad49/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 00:56:26,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 00:56:26,612 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 00:56:26,612 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 00:56:26,612 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 00:56:26,612 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 00:56:26,612 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-29 00:56:26,612 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-29 00:56:26,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 00:56:26,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 00:56:26,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 00:56:26,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 00:56:26,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 00:56:26,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 00:56:26,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 00:56:26,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 00:56:26,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 00:56:26,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 00:56:26,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 00:56:26,614 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 00:56:26,614 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 00:56:26,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 00:56:26,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 00:56:26,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 00:56:26,615 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 00:56:26,615 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 00:56:26,615 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 00:56:26,615 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 00:56:26,615 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 00:56:26,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 00:56:26,617 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 00:56:26,739 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 00:56:26,741 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 00:56:27,005 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 00:56:27,211 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 00:56:27,211 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-29 00:56:27,212 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:56:27 BoogieIcfgContainer [2023-11-29 00:56:27,212 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 00:56:27,214 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 00:56:27,215 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 00:56:27,218 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 00:56:27,218 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:56:26" (1/3) ... [2023-11-29 00:56:27,219 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a443761 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:56:27, skipping insertion in model container [2023-11-29 00:56:27,219 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:56:26" (2/3) ... [2023-11-29 00:56:27,219 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a443761 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:56:27, skipping insertion in model container [2023-11-29 00:56:27,219 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:56:27" (3/3) ... [2023-11-29 00:56:27,221 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-min-array.wvr.c [2023-11-29 00:56:27,230 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 00:56:27,266 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 00:56:27,267 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-29 00:56:27,267 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 00:56:27,316 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-29 00:56:27,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 49 transitions, 119 flow [2023-11-29 00:56:27,371 INFO L124 PetriNetUnfolderBase]: 4/46 cut-off events. [2023-11-29 00:56:27,372 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-29 00:56:27,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 46 events. 4/46 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 90 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2023-11-29 00:56:27,375 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 49 transitions, 119 flow [2023-11-29 00:56:27,378 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 44 transitions, 103 flow [2023-11-29 00:56:27,389 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:56:27,394 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;@420d5b75, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:56:27,395 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-29 00:56:27,398 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 00:56:27,398 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-29 00:56:27,398 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 00:56:27,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:56:27,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-29 00:56:27,400 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-29 00:56:27,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:56:27,404 INFO L85 PathProgramCache]: Analyzing trace with hash 486658, now seen corresponding path program 1 times [2023-11-29 00:56:27,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:56:27,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101760624] [2023-11-29 00:56:27,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:56:27,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:56:27,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:56:27,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:56:27,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:56:27,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101760624] [2023-11-29 00:56:27,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101760624] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:56:27,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:56:27,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:56:27,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458004989] [2023-11-29 00:56:27,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:56:27,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:56:27,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:56:27,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:56:27,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:56:27,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 49 [2023-11-29 00:56:27,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 44 transitions, 103 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:27,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:56:27,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 49 [2023-11-29 00:56:27,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:56:27,947 INFO L124 PetriNetUnfolderBase]: 467/894 cut-off events. [2023-11-29 00:56:27,947 INFO L125 PetriNetUnfolderBase]: For 59/59 co-relation queries the response was YES. [2023-11-29 00:56:27,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1643 conditions, 894 events. 467/894 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 4712 event pairs, 333 based on Foata normal form. 1/822 useless extension candidates. Maximal degree in co-relation 1370. Up to 681 conditions per place. [2023-11-29 00:56:27,958 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 27 selfloop transitions, 4 changer transitions 0/47 dead transitions. [2023-11-29 00:56:27,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 47 transitions, 171 flow [2023-11-29 00:56:27,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:56:27,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:56:27,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2023-11-29 00:56:27,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5561224489795918 [2023-11-29 00:56:27,969 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 109 transitions. [2023-11-29 00:56:27,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 109 transitions. [2023-11-29 00:56:27,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:56:27,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 109 transitions. [2023-11-29 00:56:27,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:27,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 49.0) internal successors, (245), 5 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:27,979 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 49.0) internal successors, (245), 5 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:27,981 INFO L175 Difference]: Start difference. First operand has 50 places, 44 transitions, 103 flow. Second operand 4 states and 109 transitions. [2023-11-29 00:56:27,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 47 transitions, 171 flow [2023-11-29 00:56:27,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 47 transitions, 162 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-29 00:56:27,987 INFO L231 Difference]: Finished difference. Result has 50 places, 47 transitions, 123 flow [2023-11-29 00:56:27,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=123, PETRI_PLACES=50, PETRI_TRANSITIONS=47} [2023-11-29 00:56:27,992 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 0 predicate places. [2023-11-29 00:56:27,992 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 47 transitions, 123 flow [2023-11-29 00:56:27,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:27,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:56:27,993 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-29 00:56:27,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 00:56:27,994 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-29 00:56:27,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:56:27,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1613602677, now seen corresponding path program 1 times [2023-11-29 00:56:27,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:56:27,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237196339] [2023-11-29 00:56:27,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:56:27,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:56:28,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:56:28,141 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:56:28,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:56:28,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237196339] [2023-11-29 00:56:28,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237196339] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:56:28,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152962281] [2023-11-29 00:56:28,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:56:28,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:56:28,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750d2178-334d-4457-874e-04923605ad49/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:56:28,151 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750d2178-334d-4457-874e-04923605ad49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:56:28,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750d2178-334d-4457-874e-04923605ad49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 00:56:28,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:56:28,244 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 00:56:28,248 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:56:28,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:56:28,298 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:56:28,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152962281] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:56:28,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:56:28,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-29 00:56:28,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732130385] [2023-11-29 00:56:28,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:56:28,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:56:28,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:56:28,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:56:28,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:56:28,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 49 [2023-11-29 00:56:28,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 47 transitions, 123 flow. Second operand has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:28,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:56:28,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 49 [2023-11-29 00:56:28,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:56:28,545 INFO L124 PetriNetUnfolderBase]: 467/893 cut-off events. [2023-11-29 00:56:28,545 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2023-11-29 00:56:28,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1627 conditions, 893 events. 467/893 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 4707 event pairs, 333 based on Foata normal form. 1/822 useless extension candidates. Maximal degree in co-relation 1600. Up to 676 conditions per place. [2023-11-29 00:56:28,554 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 23 selfloop transitions, 7 changer transitions 0/46 dead transitions. [2023-11-29 00:56:28,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 46 transitions, 179 flow [2023-11-29 00:56:28,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:56:28,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 00:56:28,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2023-11-29 00:56:28,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4931972789115646 [2023-11-29 00:56:28,558 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 145 transitions. [2023-11-29 00:56:28,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 145 transitions. [2023-11-29 00:56:28,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:56:28,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 145 transitions. [2023-11-29 00:56:28,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:28,561 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 49.0) internal successors, (343), 7 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:28,562 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 49.0) internal successors, (343), 7 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:28,562 INFO L175 Difference]: Start difference. First operand has 50 places, 47 transitions, 123 flow. Second operand 6 states and 145 transitions. [2023-11-29 00:56:28,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 46 transitions, 179 flow [2023-11-29 00:56:28,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 46 transitions, 176 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:56:28,565 INFO L231 Difference]: Finished difference. Result has 53 places, 46 transitions, 130 flow [2023-11-29 00:56:28,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=130, PETRI_PLACES=53, PETRI_TRANSITIONS=46} [2023-11-29 00:56:28,566 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 3 predicate places. [2023-11-29 00:56:28,566 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 46 transitions, 130 flow [2023-11-29 00:56:28,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:28,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:56:28,567 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-29 00:56:28,574 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750d2178-334d-4457-874e-04923605ad49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 00:56:28,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750d2178-334d-4457-874e-04923605ad49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:56:28,773 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-29 00:56:28,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:56:28,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1517924086, now seen corresponding path program 1 times [2023-11-29 00:56:28,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:56:28,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211025002] [2023-11-29 00:56:28,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:56:28,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:56:28,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:56:28,869 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:56:28,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:56:28,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211025002] [2023-11-29 00:56:28,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211025002] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:56:28,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146487372] [2023-11-29 00:56:28,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:56:28,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:56:28,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750d2178-334d-4457-874e-04923605ad49/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:56:28,872 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750d2178-334d-4457-874e-04923605ad49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:56:28,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750d2178-334d-4457-874e-04923605ad49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 00:56:28,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:56:28,964 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 00:56:28,965 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:56:28,991 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:56:28,991 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:56:29,033 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:56:29,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146487372] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:56:29,034 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:56:29,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-29 00:56:29,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557009112] [2023-11-29 00:56:29,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:56:29,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:56:29,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:56:29,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:56:29,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:56:29,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 49 [2023-11-29 00:56:29,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 46 transitions, 130 flow. Second operand has 12 states, 12 states have (on average 20.083333333333332) internal successors, (241), 12 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:29,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:56:29,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 49 [2023-11-29 00:56:29,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:56:29,269 INFO L124 PetriNetUnfolderBase]: 470/905 cut-off events. [2023-11-29 00:56:29,269 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2023-11-29 00:56:29,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1671 conditions, 905 events. 470/905 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4824 event pairs, 333 based on Foata normal form. 3/834 useless extension candidates. Maximal degree in co-relation 1601. Up to 683 conditions per place. [2023-11-29 00:56:29,276 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 26 selfloop transitions, 13 changer transitions 0/55 dead transitions. [2023-11-29 00:56:29,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 55 transitions, 262 flow [2023-11-29 00:56:29,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 00:56:29,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 00:56:29,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 232 transitions. [2023-11-29 00:56:29,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47346938775510206 [2023-11-29 00:56:29,280 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 232 transitions. [2023-11-29 00:56:29,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 232 transitions. [2023-11-29 00:56:29,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:56:29,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 232 transitions. [2023-11-29 00:56:29,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 23.2) internal successors, (232), 10 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:29,283 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 49.0) internal successors, (539), 11 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:29,284 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 49.0) internal successors, (539), 11 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:29,284 INFO L175 Difference]: Start difference. First operand has 53 places, 46 transitions, 130 flow. Second operand 10 states and 232 transitions. [2023-11-29 00:56:29,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 55 transitions, 262 flow [2023-11-29 00:56:29,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 55 transitions, 216 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-11-29 00:56:29,287 INFO L231 Difference]: Finished difference. Result has 60 places, 55 transitions, 182 flow [2023-11-29 00:56:29,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=182, PETRI_PLACES=60, PETRI_TRANSITIONS=55} [2023-11-29 00:56:29,288 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 10 predicate places. [2023-11-29 00:56:29,288 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 55 transitions, 182 flow [2023-11-29 00:56:29,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 20.083333333333332) internal successors, (241), 12 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:29,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:56:29,289 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:56:29,299 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750d2178-334d-4457-874e-04923605ad49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 00:56:29,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750d2178-334d-4457-874e-04923605ad49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:56:29,489 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-29 00:56:29,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:56:29,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1910507382, now seen corresponding path program 1 times [2023-11-29 00:56:29,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:56:29,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600996304] [2023-11-29 00:56:29,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:56:29,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:56:29,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:56:29,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:56:29,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:56:29,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600996304] [2023-11-29 00:56:29,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600996304] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:56:29,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:56:29,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:56:29,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206274949] [2023-11-29 00:56:29,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:56:29,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:56:29,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:56:29,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:56:29,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:56:29,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 49 [2023-11-29 00:56:29,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 55 transitions, 182 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:29,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:56:29,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 49 [2023-11-29 00:56:29,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:56:29,882 INFO L124 PetriNetUnfolderBase]: 1100/1907 cut-off events. [2023-11-29 00:56:29,882 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2023-11-29 00:56:29,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3609 conditions, 1907 events. 1100/1907 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 10548 event pairs, 467 based on Foata normal form. 42/1847 useless extension candidates. Maximal degree in co-relation 3575. Up to 1152 conditions per place. [2023-11-29 00:56:29,899 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 67 selfloop transitions, 4 changer transitions 0/85 dead transitions. [2023-11-29 00:56:29,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 85 transitions, 390 flow [2023-11-29 00:56:29,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:56:29,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:56:29,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 133 transitions. [2023-11-29 00:56:29,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6785714285714286 [2023-11-29 00:56:29,900 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 133 transitions. [2023-11-29 00:56:29,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 133 transitions. [2023-11-29 00:56:29,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:56:29,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 133 transitions. [2023-11-29 00:56:29,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:29,902 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 49.0) internal successors, (245), 5 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:29,903 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 49.0) internal successors, (245), 5 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:29,903 INFO L175 Difference]: Start difference. First operand has 60 places, 55 transitions, 182 flow. Second operand 4 states and 133 transitions. [2023-11-29 00:56:29,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 85 transitions, 390 flow [2023-11-29 00:56:29,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 85 transitions, 379 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-29 00:56:29,907 INFO L231 Difference]: Finished difference. Result has 63 places, 58 transitions, 200 flow [2023-11-29 00:56:29,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=200, PETRI_PLACES=63, PETRI_TRANSITIONS=58} [2023-11-29 00:56:29,908 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 13 predicate places. [2023-11-29 00:56:29,908 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 58 transitions, 200 flow [2023-11-29 00:56:29,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:29,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:56:29,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:56:29,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 00:56:29,909 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-29 00:56:29,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:56:29,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1398843988, now seen corresponding path program 1 times [2023-11-29 00:56:29,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:56:29,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313493889] [2023-11-29 00:56:29,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:56:29,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:56:29,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:56:29,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:56:29,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:56:29,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313493889] [2023-11-29 00:56:29,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313493889] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:56:29,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:56:29,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:56:29,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300748806] [2023-11-29 00:56:29,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:56:29,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:56:29,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:56:29,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:56:29,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:56:29,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 49 [2023-11-29 00:56:29,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 58 transitions, 200 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:29,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:56:29,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 49 [2023-11-29 00:56:29,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:56:30,462 INFO L124 PetriNetUnfolderBase]: 1796/2977 cut-off events. [2023-11-29 00:56:30,462 INFO L125 PetriNetUnfolderBase]: For 769/1064 co-relation queries the response was YES. [2023-11-29 00:56:30,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6368 conditions, 2977 events. 1796/2977 cut-off events. For 769/1064 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 16889 event pairs, 901 based on Foata normal form. 167/2993 useless extension candidates. Maximal degree in co-relation 6332. Up to 1794 conditions per place. [2023-11-29 00:56:30,489 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 73 selfloop transitions, 4 changer transitions 0/92 dead transitions. [2023-11-29 00:56:30,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 92 transitions, 454 flow [2023-11-29 00:56:30,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:56:30,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:56:30,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 133 transitions. [2023-11-29 00:56:30,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6785714285714286 [2023-11-29 00:56:30,490 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 133 transitions. [2023-11-29 00:56:30,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 133 transitions. [2023-11-29 00:56:30,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:56:30,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 133 transitions. [2023-11-29 00:56:30,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:30,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 49.0) internal successors, (245), 5 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:30,493 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 49.0) internal successors, (245), 5 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:30,493 INFO L175 Difference]: Start difference. First operand has 63 places, 58 transitions, 200 flow. Second operand 4 states and 133 transitions. [2023-11-29 00:56:30,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 92 transitions, 454 flow [2023-11-29 00:56:30,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 92 transitions, 445 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:56:30,497 INFO L231 Difference]: Finished difference. Result has 67 places, 61 transitions, 226 flow [2023-11-29 00:56:30,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=226, PETRI_PLACES=67, PETRI_TRANSITIONS=61} [2023-11-29 00:56:30,498 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 17 predicate places. [2023-11-29 00:56:30,498 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 61 transitions, 226 flow [2023-11-29 00:56:30,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:30,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:56:30,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:56:30,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 00:56:30,499 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-29 00:56:30,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:56:30,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1399985562, now seen corresponding path program 1 times [2023-11-29 00:56:30,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:56:30,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457286423] [2023-11-29 00:56:30,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:56:30,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:56:30,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:56:30,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:56:30,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:56:30,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457286423] [2023-11-29 00:56:30,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457286423] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:56:30,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:56:30,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:56:30,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814670920] [2023-11-29 00:56:30,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:56:30,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:56:30,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:56:30,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:56:30,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:56:30,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 49 [2023-11-29 00:56:30,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 61 transitions, 226 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:30,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:56:30,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 49 [2023-11-29 00:56:30,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:56:30,886 INFO L124 PetriNetUnfolderBase]: 1115/2032 cut-off events. [2023-11-29 00:56:30,886 INFO L125 PetriNetUnfolderBase]: For 801/1070 co-relation queries the response was YES. [2023-11-29 00:56:30,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4560 conditions, 2032 events. 1115/2032 cut-off events. For 801/1070 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 12048 event pairs, 765 based on Foata normal form. 96/1987 useless extension candidates. Maximal degree in co-relation 4529. Up to 1553 conditions per place. [2023-11-29 00:56:30,904 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 39 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2023-11-29 00:56:30,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 60 transitions, 305 flow [2023-11-29 00:56:30,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:56:30,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:56:30,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 92 transitions. [2023-11-29 00:56:30,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6258503401360545 [2023-11-29 00:56:30,906 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 92 transitions. [2023-11-29 00:56:30,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 92 transitions. [2023-11-29 00:56:30,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:56:30,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 92 transitions. [2023-11-29 00:56:30,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:30,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:30,907 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:30,907 INFO L175 Difference]: Start difference. First operand has 67 places, 61 transitions, 226 flow. Second operand 3 states and 92 transitions. [2023-11-29 00:56:30,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 60 transitions, 305 flow [2023-11-29 00:56:30,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 60 transitions, 302 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:56:30,911 INFO L231 Difference]: Finished difference. Result has 68 places, 60 transitions, 224 flow [2023-11-29 00:56:30,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=224, PETRI_PLACES=68, PETRI_TRANSITIONS=60} [2023-11-29 00:56:30,912 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 18 predicate places. [2023-11-29 00:56:30,912 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 60 transitions, 224 flow [2023-11-29 00:56:30,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:30,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:56:30,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:56:30,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 00:56:30,913 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-29 00:56:30,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:56:30,914 INFO L85 PathProgramCache]: Analyzing trace with hash 742246739, now seen corresponding path program 1 times [2023-11-29 00:56:30,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:56:30,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412707707] [2023-11-29 00:56:30,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:56:30,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:56:30,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:56:30,993 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:56:30,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:56:30,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412707707] [2023-11-29 00:56:30,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412707707] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:56:30,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:56:30,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:56:30,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043411955] [2023-11-29 00:56:30,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:56:30,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:56:30,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:56:30,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:56:30,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:56:31,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 49 [2023-11-29 00:56:31,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 60 transitions, 224 flow. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:31,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:56:31,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 49 [2023-11-29 00:56:31,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:56:31,389 INFO L124 PetriNetUnfolderBase]: 1579/2480 cut-off events. [2023-11-29 00:56:31,389 INFO L125 PetriNetUnfolderBase]: For 948/1373 co-relation queries the response was YES. [2023-11-29 00:56:31,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5770 conditions, 2480 events. 1579/2480 cut-off events. For 948/1373 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 13057 event pairs, 405 based on Foata normal form. 233/2582 useless extension candidates. Maximal degree in co-relation 5746. Up to 821 conditions per place. [2023-11-29 00:56:31,413 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 69 selfloop transitions, 8 changer transitions 0/93 dead transitions. [2023-11-29 00:56:31,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 93 transitions, 488 flow [2023-11-29 00:56:31,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:56:31,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 00:56:31,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 145 transitions. [2023-11-29 00:56:31,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5918367346938775 [2023-11-29 00:56:31,415 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 145 transitions. [2023-11-29 00:56:31,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 145 transitions. [2023-11-29 00:56:31,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:56:31,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 145 transitions. [2023-11-29 00:56:31,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 29.0) internal successors, (145), 5 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:31,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 49.0) internal successors, (294), 6 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:31,417 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 49.0) internal successors, (294), 6 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:31,417 INFO L175 Difference]: Start difference. First operand has 68 places, 60 transitions, 224 flow. Second operand 5 states and 145 transitions. [2023-11-29 00:56:31,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 93 transitions, 488 flow [2023-11-29 00:56:31,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 93 transitions, 484 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:56:31,422 INFO L231 Difference]: Finished difference. Result has 69 places, 59 transitions, 234 flow [2023-11-29 00:56:31,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=234, PETRI_PLACES=69, PETRI_TRANSITIONS=59} [2023-11-29 00:56:31,423 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 19 predicate places. [2023-11-29 00:56:31,423 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 59 transitions, 234 flow [2023-11-29 00:56:31,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:31,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:56:31,423 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2023-11-29 00:56:31,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 00:56:31,424 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-29 00:56:31,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:56:31,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1377253667, now seen corresponding path program 2 times [2023-11-29 00:56:31,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:56:31,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814773168] [2023-11-29 00:56:31,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:56:31,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:56:31,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:56:31,608 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:56:31,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:56:31,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814773168] [2023-11-29 00:56:31,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814773168] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:56:31,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132519433] [2023-11-29 00:56:31,609 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:56:31,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:56:31,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750d2178-334d-4457-874e-04923605ad49/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:56:31,610 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750d2178-334d-4457-874e-04923605ad49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:56:31,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750d2178-334d-4457-874e-04923605ad49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 00:56:31,696 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 00:56:31,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:56:31,697 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 00:56:31,698 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:56:31,752 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 00:56:31,753 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:56:31,790 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 00:56:31,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132519433] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:56:31,791 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:56:31,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2023-11-29 00:56:31,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641801666] [2023-11-29 00:56:31,791 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:56:31,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 00:56:31,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:56:31,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 00:56:31,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-11-29 00:56:31,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 49 [2023-11-29 00:56:31,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 59 transitions, 234 flow. Second operand has 14 states, 14 states have (on average 20.142857142857142) internal successors, (282), 14 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:31,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:56:31,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 49 [2023-11-29 00:56:31,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:56:32,182 INFO L124 PetriNetUnfolderBase]: 1116/1963 cut-off events. [2023-11-29 00:56:32,182 INFO L125 PetriNetUnfolderBase]: For 846/1115 co-relation queries the response was YES. [2023-11-29 00:56:32,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4694 conditions, 1963 events. 1116/1963 cut-off events. For 846/1115 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 11146 event pairs, 765 based on Foata normal form. 97/1992 useless extension candidates. Maximal degree in co-relation 4655. Up to 1545 conditions per place. [2023-11-29 00:56:32,198 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 26 selfloop transitions, 18 changer transitions 0/61 dead transitions. [2023-11-29 00:56:32,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 61 transitions, 330 flow [2023-11-29 00:56:32,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 00:56:32,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-29 00:56:32,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 308 transitions. [2023-11-29 00:56:32,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4489795918367347 [2023-11-29 00:56:32,200 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 308 transitions. [2023-11-29 00:56:32,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 308 transitions. [2023-11-29 00:56:32,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:56:32,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 308 transitions. [2023-11-29 00:56:32,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 22.0) internal successors, (308), 14 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:32,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 49.0) internal successors, (735), 15 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:32,203 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 49.0) internal successors, (735), 15 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:32,203 INFO L175 Difference]: Start difference. First operand has 69 places, 59 transitions, 234 flow. Second operand 14 states and 308 transitions. [2023-11-29 00:56:32,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 61 transitions, 330 flow [2023-11-29 00:56:32,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 61 transitions, 300 flow, removed 2 selfloop flow, removed 8 redundant places. [2023-11-29 00:56:32,207 INFO L231 Difference]: Finished difference. Result has 73 places, 61 transitions, 248 flow [2023-11-29 00:56:32,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=248, PETRI_PLACES=73, PETRI_TRANSITIONS=61} [2023-11-29 00:56:32,208 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 23 predicate places. [2023-11-29 00:56:32,208 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 61 transitions, 248 flow [2023-11-29 00:56:32,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 20.142857142857142) internal successors, (282), 14 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:32,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:56:32,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:56:32,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750d2178-334d-4457-874e-04923605ad49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-29 00:56:32,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750d2178-334d-4457-874e-04923605ad49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:56:32,409 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-29 00:56:32,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:56:32,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1534812955, now seen corresponding path program 1 times [2023-11-29 00:56:32,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:56:32,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961503169] [2023-11-29 00:56:32,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:56:32,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:56:32,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:56:32,556 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:56:32,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:56:32,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961503169] [2023-11-29 00:56:32,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961503169] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:56:32,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633261657] [2023-11-29 00:56:32,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:56:32,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:56:32,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750d2178-334d-4457-874e-04923605ad49/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:56:32,560 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750d2178-334d-4457-874e-04923605ad49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:56:32,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750d2178-334d-4457-874e-04923605ad49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 00:56:32,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:56:32,661 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 00:56:32,663 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:56:32,745 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:56:32,745 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:56:32,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1633261657] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:56:32,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:56:32,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2023-11-29 00:56:32,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486882506] [2023-11-29 00:56:32,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:56:32,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:56:32,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:56:32,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:56:32,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:56:32,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2023-11-29 00:56:32,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 61 transitions, 248 flow. Second operand has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:32,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:56:32,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2023-11-29 00:56:32,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:56:33,163 INFO L124 PetriNetUnfolderBase]: 1898/2801 cut-off events. [2023-11-29 00:56:33,164 INFO L125 PetriNetUnfolderBase]: For 1093/1590 co-relation queries the response was YES. [2023-11-29 00:56:33,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6635 conditions, 2801 events. 1898/2801 cut-off events. For 1093/1590 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 13770 event pairs, 585 based on Foata normal form. 173/2753 useless extension candidates. Maximal degree in co-relation 6545. Up to 1226 conditions per place. [2023-11-29 00:56:33,184 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 65 selfloop transitions, 11 changer transitions 6/96 dead transitions. [2023-11-29 00:56:33,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 96 transitions, 526 flow [2023-11-29 00:56:33,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:56:33,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 00:56:33,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 159 transitions. [2023-11-29 00:56:33,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5408163265306123 [2023-11-29 00:56:33,185 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 159 transitions. [2023-11-29 00:56:33,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 159 transitions. [2023-11-29 00:56:33,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:56:33,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 159 transitions. [2023-11-29 00:56:33,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 26.5) internal successors, (159), 6 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:33,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 49.0) internal successors, (343), 7 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:33,188 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 49.0) internal successors, (343), 7 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:33,188 INFO L175 Difference]: Start difference. First operand has 73 places, 61 transitions, 248 flow. Second operand 6 states and 159 transitions. [2023-11-29 00:56:33,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 96 transitions, 526 flow [2023-11-29 00:56:33,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 96 transitions, 458 flow, removed 6 selfloop flow, removed 12 redundant places. [2023-11-29 00:56:33,191 INFO L231 Difference]: Finished difference. Result has 67 places, 60 transitions, 216 flow [2023-11-29 00:56:33,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=216, PETRI_PLACES=67, PETRI_TRANSITIONS=60} [2023-11-29 00:56:33,192 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 17 predicate places. [2023-11-29 00:56:33,192 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 60 transitions, 216 flow [2023-11-29 00:56:33,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:33,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:56:33,193 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:56:33,198 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750d2178-334d-4457-874e-04923605ad49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 00:56:33,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750d2178-334d-4457-874e-04923605ad49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-29 00:56:33,398 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-29 00:56:33,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:56:33,399 INFO L85 PathProgramCache]: Analyzing trace with hash 499502473, now seen corresponding path program 1 times [2023-11-29 00:56:33,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:56:33,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427097030] [2023-11-29 00:56:33,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:56:33,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:56:33,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:56:33,473 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:56:33,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:56:33,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427097030] [2023-11-29 00:56:33,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427097030] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:56:33,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867217441] [2023-11-29 00:56:33,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:56:33,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:56:33,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750d2178-334d-4457-874e-04923605ad49/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:56:33,475 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750d2178-334d-4457-874e-04923605ad49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:56:33,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750d2178-334d-4457-874e-04923605ad49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 00:56:33,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:56:33,573 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 00:56:33,575 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:56:33,701 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:56:33,701 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:56:33,836 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:56:33,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867217441] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:56:33,836 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:56:33,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2023-11-29 00:56:33,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909939830] [2023-11-29 00:56:33,837 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:56:33,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 00:56:33,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:56:33,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 00:56:33,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2023-11-29 00:56:33,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2023-11-29 00:56:33,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 60 transitions, 216 flow. Second operand has 19 states, 19 states have (on average 17.0) internal successors, (323), 19 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:33,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:56:33,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2023-11-29 00:56:33,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:56:35,025 INFO L124 PetriNetUnfolderBase]: 3882/6032 cut-off events. [2023-11-29 00:56:35,025 INFO L125 PetriNetUnfolderBase]: For 4427/5179 co-relation queries the response was YES. [2023-11-29 00:56:35,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15829 conditions, 6032 events. 3882/6032 cut-off events. For 4427/5179 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 35457 event pairs, 700 based on Foata normal form. 390/6286 useless extension candidates. Maximal degree in co-relation 9286. Up to 896 conditions per place. [2023-11-29 00:56:35,053 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 162 selfloop transitions, 25 changer transitions 0/199 dead transitions. [2023-11-29 00:56:35,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 199 transitions, 1088 flow [2023-11-29 00:56:35,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 00:56:35,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-29 00:56:35,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 363 transitions. [2023-11-29 00:56:35,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5291545189504373 [2023-11-29 00:56:35,056 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 363 transitions. [2023-11-29 00:56:35,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 363 transitions. [2023-11-29 00:56:35,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:56:35,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 363 transitions. [2023-11-29 00:56:35,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 25.928571428571427) internal successors, (363), 14 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:35,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 49.0) internal successors, (735), 15 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:35,059 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 49.0) internal successors, (735), 15 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:35,059 INFO L175 Difference]: Start difference. First operand has 67 places, 60 transitions, 216 flow. Second operand 14 states and 363 transitions. [2023-11-29 00:56:35,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 199 transitions, 1088 flow [2023-11-29 00:56:35,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 199 transitions, 1071 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 00:56:35,069 INFO L231 Difference]: Finished difference. Result has 75 places, 64 transitions, 279 flow [2023-11-29 00:56:35,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=279, PETRI_PLACES=75, PETRI_TRANSITIONS=64} [2023-11-29 00:56:35,069 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 25 predicate places. [2023-11-29 00:56:35,070 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 64 transitions, 279 flow [2023-11-29 00:56:35,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 17.0) internal successors, (323), 19 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:35,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:56:35,070 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:56:35,075 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750d2178-334d-4457-874e-04923605ad49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 00:56:35,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750d2178-334d-4457-874e-04923605ad49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:56:35,271 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-29 00:56:35,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:56:35,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1602431224, now seen corresponding path program 1 times [2023-11-29 00:56:35,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:56:35,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414735137] [2023-11-29 00:56:35,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:56:35,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:56:35,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:56:35,387 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 00:56:35,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:56:35,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414735137] [2023-11-29 00:56:35,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414735137] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:56:35,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84801604] [2023-11-29 00:56:35,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:56:35,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:56:35,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750d2178-334d-4457-874e-04923605ad49/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:56:35,389 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750d2178-334d-4457-874e-04923605ad49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:56:35,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750d2178-334d-4457-874e-04923605ad49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 00:56:35,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:56:35,488 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 00:56:35,490 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:56:35,566 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 00:56:35,566 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:56:35,659 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 00:56:35,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84801604] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:56:35,660 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:56:35,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2023-11-29 00:56:35,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042760516] [2023-11-29 00:56:35,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:56:35,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 00:56:35,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:56:35,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 00:56:35,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2023-11-29 00:56:35,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 49 [2023-11-29 00:56:35,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 64 transitions, 279 flow. Second operand has 16 states, 16 states have (on average 19.6875) internal successors, (315), 16 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:35,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:56:35,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 49 [2023-11-29 00:56:35,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:56:36,455 INFO L124 PetriNetUnfolderBase]: 2571/4238 cut-off events. [2023-11-29 00:56:36,455 INFO L125 PetriNetUnfolderBase]: For 4081/4295 co-relation queries the response was YES. [2023-11-29 00:56:36,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11665 conditions, 4238 events. 2571/4238 cut-off events. For 4081/4295 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 24837 event pairs, 1834 based on Foata normal form. 85/4220 useless extension candidates. Maximal degree in co-relation 7459. Up to 2919 conditions per place. [2023-11-29 00:56:36,486 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 31 selfloop transitions, 12 changer transitions 37/95 dead transitions. [2023-11-29 00:56:36,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 95 transitions, 553 flow [2023-11-29 00:56:36,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:56:36,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 00:56:36,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 206 transitions. [2023-11-29 00:56:36,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5255102040816326 [2023-11-29 00:56:36,488 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 206 transitions. [2023-11-29 00:56:36,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 206 transitions. [2023-11-29 00:56:36,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:56:36,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 206 transitions. [2023-11-29 00:56:36,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 25.75) internal successors, (206), 8 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:36,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 49.0) internal successors, (441), 9 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:36,491 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 49.0) internal successors, (441), 9 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:36,491 INFO L175 Difference]: Start difference. First operand has 75 places, 64 transitions, 279 flow. Second operand 8 states and 206 transitions. [2023-11-29 00:56:36,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 95 transitions, 553 flow [2023-11-29 00:56:36,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 95 transitions, 509 flow, removed 4 selfloop flow, removed 7 redundant places. [2023-11-29 00:56:36,501 INFO L231 Difference]: Finished difference. Result has 77 places, 58 transitions, 243 flow [2023-11-29 00:56:36,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=243, PETRI_PLACES=77, PETRI_TRANSITIONS=58} [2023-11-29 00:56:36,502 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 27 predicate places. [2023-11-29 00:56:36,503 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 58 transitions, 243 flow [2023-11-29 00:56:36,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 19.6875) internal successors, (315), 16 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:36,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:56:36,503 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-29 00:56:36,509 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750d2178-334d-4457-874e-04923605ad49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 00:56:36,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750d2178-334d-4457-874e-04923605ad49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:56:36,704 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-29 00:56:36,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:56:36,704 INFO L85 PathProgramCache]: Analyzing trace with hash -118795578, now seen corresponding path program 1 times [2023-11-29 00:56:36,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:56:36,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135226218] [2023-11-29 00:56:36,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:56:36,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:56:36,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:56:36,792 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 00:56:36,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:56:36,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135226218] [2023-11-29 00:56:36,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135226218] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:56:36,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481277278] [2023-11-29 00:56:36,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:56:36,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:56:36,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750d2178-334d-4457-874e-04923605ad49/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:56:36,794 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750d2178-334d-4457-874e-04923605ad49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:56:36,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750d2178-334d-4457-874e-04923605ad49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 00:56:36,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:56:36,895 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 00:56:36,896 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:56:36,923 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 00:56:36,923 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:56:36,969 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 00:56:36,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481277278] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:56:36,970 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:56:36,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-29 00:56:36,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106861097] [2023-11-29 00:56:36,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:56:36,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:56:36,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:56:36,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:56:36,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:56:36,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 49 [2023-11-29 00:56:36,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 58 transitions, 243 flow. Second operand has 12 states, 12 states have (on average 19.916666666666668) internal successors, (239), 12 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) [2023-11-29 00:56:36,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:56:36,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 49 [2023-11-29 00:56:36,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:56:37,920 INFO L124 PetriNetUnfolderBase]: 4277/6801 cut-off events. [2023-11-29 00:56:37,920 INFO L125 PetriNetUnfolderBase]: For 6317/7472 co-relation queries the response was YES. [2023-11-29 00:56:37,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18429 conditions, 6801 events. 4277/6801 cut-off events. For 6317/7472 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 38911 event pairs, 913 based on Foata normal form. 546/7318 useless extension candidates. Maximal degree in co-relation 18353. Up to 2477 conditions per place. [2023-11-29 00:56:37,991 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 173 selfloop transitions, 13 changer transitions 0/199 dead transitions. [2023-11-29 00:56:37,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 199 transitions, 1153 flow [2023-11-29 00:56:37,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 00:56:37,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 00:56:37,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 329 transitions. [2023-11-29 00:56:37,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6714285714285714 [2023-11-29 00:56:37,994 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 329 transitions. [2023-11-29 00:56:37,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 329 transitions. [2023-11-29 00:56:37,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:56:37,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 329 transitions. [2023-11-29 00:56:37,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 32.9) internal successors, (329), 10 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:37,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 49.0) internal successors, (539), 11 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:37,998 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 49.0) internal successors, (539), 11 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:37,998 INFO L175 Difference]: Start difference. First operand has 77 places, 58 transitions, 243 flow. Second operand 10 states and 329 transitions. [2023-11-29 00:56:37,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 199 transitions, 1153 flow [2023-11-29 00:56:38,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 199 transitions, 1074 flow, removed 20 selfloop flow, removed 9 redundant places. [2023-11-29 00:56:38,012 INFO L231 Difference]: Finished difference. Result has 75 places, 67 transitions, 282 flow [2023-11-29 00:56:38,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=282, PETRI_PLACES=75, PETRI_TRANSITIONS=67} [2023-11-29 00:56:38,013 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 25 predicate places. [2023-11-29 00:56:38,013 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 67 transitions, 282 flow [2023-11-29 00:56:38,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.916666666666668) internal successors, (239), 12 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) [2023-11-29 00:56:38,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:56:38,014 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:56:38,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750d2178-334d-4457-874e-04923605ad49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-29 00:56:38,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750d2178-334d-4457-874e-04923605ad49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:56:38,219 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-29 00:56:38,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:56:38,220 INFO L85 PathProgramCache]: Analyzing trace with hash 24318005, now seen corresponding path program 2 times [2023-11-29 00:56:38,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:56:38,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314501260] [2023-11-29 00:56:38,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:56:38,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:56:38,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:56:38,342 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 00:56:38,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:56:38,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314501260] [2023-11-29 00:56:38,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314501260] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:56:38,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415952396] [2023-11-29 00:56:38,343 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:56:38,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:56:38,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750d2178-334d-4457-874e-04923605ad49/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:56:38,345 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750d2178-334d-4457-874e-04923605ad49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:56:38,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750d2178-334d-4457-874e-04923605ad49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 00:56:38,448 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:56:38,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:56:38,449 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 00:56:38,451 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:56:38,480 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 00:56:38,480 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:56:38,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415952396] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:56:38,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:56:38,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2023-11-29 00:56:38,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373142767] [2023-11-29 00:56:38,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:56:38,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:56:38,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:56:38,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:56:38,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:56:38,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2023-11-29 00:56:38,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 67 transitions, 282 flow. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:38,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:56:38,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2023-11-29 00:56:38,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:56:39,227 INFO L124 PetriNetUnfolderBase]: 5244/7753 cut-off events. [2023-11-29 00:56:39,227 INFO L125 PetriNetUnfolderBase]: For 9382/9895 co-relation queries the response was YES. [2023-11-29 00:56:39,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22513 conditions, 7753 events. 5244/7753 cut-off events. For 9382/9895 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 43225 event pairs, 599 based on Foata normal form. 176/7725 useless extension candidates. Maximal degree in co-relation 18360. Up to 3145 conditions per place. [2023-11-29 00:56:39,281 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 89 selfloop transitions, 7 changer transitions 0/110 dead transitions. [2023-11-29 00:56:39,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 110 transitions, 690 flow [2023-11-29 00:56:39,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:56:39,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:56:39,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 122 transitions. [2023-11-29 00:56:39,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6224489795918368 [2023-11-29 00:56:39,283 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 122 transitions. [2023-11-29 00:56:39,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 122 transitions. [2023-11-29 00:56:39,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:56:39,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 122 transitions. [2023-11-29 00:56:39,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:39,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 49.0) internal successors, (245), 5 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:39,285 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 49.0) internal successors, (245), 5 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:39,285 INFO L175 Difference]: Start difference. First operand has 75 places, 67 transitions, 282 flow. Second operand 4 states and 122 transitions. [2023-11-29 00:56:39,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 110 transitions, 690 flow [2023-11-29 00:56:39,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 110 transitions, 661 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-11-29 00:56:39,304 INFO L231 Difference]: Finished difference. Result has 75 places, 66 transitions, 281 flow [2023-11-29 00:56:39,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=281, PETRI_PLACES=75, PETRI_TRANSITIONS=66} [2023-11-29 00:56:39,305 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 25 predicate places. [2023-11-29 00:56:39,305 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 66 transitions, 281 flow [2023-11-29 00:56:39,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:39,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:56:39,305 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:56:39,311 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750d2178-334d-4457-874e-04923605ad49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 00:56:39,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750d2178-334d-4457-874e-04923605ad49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 00:56:39,507 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-29 00:56:39,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:56:39,508 INFO L85 PathProgramCache]: Analyzing trace with hash 753858672, now seen corresponding path program 1 times [2023-11-29 00:56:39,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:56:39,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113480134] [2023-11-29 00:56:39,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:56:39,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:56:39,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:56:39,581 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 00:56:39,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:56:39,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113480134] [2023-11-29 00:56:39,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113480134] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:56:39,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42467046] [2023-11-29 00:56:39,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:56:39,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:56:39,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750d2178-334d-4457-874e-04923605ad49/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:56:39,582 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750d2178-334d-4457-874e-04923605ad49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:56:39,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750d2178-334d-4457-874e-04923605ad49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 00:56:39,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:56:39,690 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 00:56:39,691 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:56:39,865 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:56:39,865 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:56:40,042 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:56:40,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42467046] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:56:40,042 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:56:40,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 10, 10] total 24 [2023-11-29 00:56:40,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690138411] [2023-11-29 00:56:40,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:56:40,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-29 00:56:40,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:56:40,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-29 00:56:40,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=475, Unknown=0, NotChecked=0, Total=552 [2023-11-29 00:56:40,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2023-11-29 00:56:40,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 66 transitions, 281 flow. Second operand has 24 states, 24 states have (on average 17.041666666666668) internal successors, (409), 24 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:40,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:56:40,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2023-11-29 00:56:40,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:56:42,147 INFO L124 PetriNetUnfolderBase]: 10790/15996 cut-off events. [2023-11-29 00:56:42,147 INFO L125 PetriNetUnfolderBase]: For 20592/21670 co-relation queries the response was YES. [2023-11-29 00:56:42,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48056 conditions, 15996 events. 10790/15996 cut-off events. For 20592/21670 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 99387 event pairs, 3073 based on Foata normal form. 352/16206 useless extension candidates. Maximal degree in co-relation 39372. Up to 4470 conditions per place. [2023-11-29 00:56:42,221 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 235 selfloop transitions, 25 changer transitions 7/281 dead transitions. [2023-11-29 00:56:42,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 281 transitions, 1794 flow [2023-11-29 00:56:42,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 00:56:42,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-29 00:56:42,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 428 transitions. [2023-11-29 00:56:42,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5138055222088835 [2023-11-29 00:56:42,224 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 428 transitions. [2023-11-29 00:56:42,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 428 transitions. [2023-11-29 00:56:42,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:56:42,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 428 transitions. [2023-11-29 00:56:42,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 25.176470588235293) internal successors, (428), 17 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:42,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 49.0) internal successors, (882), 18 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:42,227 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 49.0) internal successors, (882), 18 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:42,228 INFO L175 Difference]: Start difference. First operand has 75 places, 66 transitions, 281 flow. Second operand 17 states and 428 transitions. [2023-11-29 00:56:42,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 281 transitions, 1794 flow [2023-11-29 00:56:42,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 281 transitions, 1764 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 00:56:42,283 INFO L231 Difference]: Finished difference. Result has 91 places, 74 transitions, 368 flow [2023-11-29 00:56:42,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=368, PETRI_PLACES=91, PETRI_TRANSITIONS=74} [2023-11-29 00:56:42,284 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 41 predicate places. [2023-11-29 00:56:42,284 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 74 transitions, 368 flow [2023-11-29 00:56:42,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 17.041666666666668) internal successors, (409), 24 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:42,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:56:42,285 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:56:42,289 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750d2178-334d-4457-874e-04923605ad49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 00:56:42,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750d2178-334d-4457-874e-04923605ad49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 00:56:42,485 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-29 00:56:42,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:56:42,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1689316900, now seen corresponding path program 2 times [2023-11-29 00:56:42,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:56:42,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305032759] [2023-11-29 00:56:42,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:56:42,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:56:42,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:56:42,767 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 9 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:56:42,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:56:42,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305032759] [2023-11-29 00:56:42,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305032759] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:56:42,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703107712] [2023-11-29 00:56:42,767 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:56:42,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:56:42,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750d2178-334d-4457-874e-04923605ad49/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:56:42,768 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750d2178-334d-4457-874e-04923605ad49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:56:42,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750d2178-334d-4457-874e-04923605ad49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 00:56:42,873 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 00:56:42,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:56:42,874 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 00:56:42,876 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:56:42,941 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-29 00:56:42,941 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:56:42,998 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-29 00:56:42,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703107712] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:56:42,998 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:56:42,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 3, 3] total 17 [2023-11-29 00:56:42,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478540228] [2023-11-29 00:56:42,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:56:42,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 00:56:43,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:56:43,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 00:56:43,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2023-11-29 00:56:43,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2023-11-29 00:56:43,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 74 transitions, 368 flow. Second operand has 18 states, 18 states have (on average 17.22222222222222) internal successors, (310), 18 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:43,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:56:43,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2023-11-29 00:56:43,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:56:45,930 INFO L124 PetriNetUnfolderBase]: 16675/24966 cut-off events. [2023-11-29 00:56:45,930 INFO L125 PetriNetUnfolderBase]: For 33463/35536 co-relation queries the response was YES. [2023-11-29 00:56:45,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76064 conditions, 24966 events. 16675/24966 cut-off events. For 33463/35536 co-relation queries the response was YES. Maximal size of possible extension queue 614. Compared 165303 event pairs, 3417 based on Foata normal form. 629/25484 useless extension candidates. Maximal degree in co-relation 62561. Up to 4613 conditions per place. [2023-11-29 00:56:46,038 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 188 selfloop transitions, 32 changer transitions 31/265 dead transitions. [2023-11-29 00:56:46,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 265 transitions, 1751 flow [2023-11-29 00:56:46,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 00:56:46,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-29 00:56:46,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 429 transitions. [2023-11-29 00:56:46,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48639455782312924 [2023-11-29 00:56:46,040 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 429 transitions. [2023-11-29 00:56:46,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 429 transitions. [2023-11-29 00:56:46,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:56:46,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 429 transitions. [2023-11-29 00:56:46,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 23.833333333333332) internal successors, (429), 18 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:46,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 49.0) internal successors, (931), 19 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:46,043 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 49.0) internal successors, (931), 19 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:46,043 INFO L175 Difference]: Start difference. First operand has 91 places, 74 transitions, 368 flow. Second operand 18 states and 429 transitions. [2023-11-29 00:56:46,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 265 transitions, 1751 flow [2023-11-29 00:56:46,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 265 transitions, 1705 flow, removed 7 selfloop flow, removed 8 redundant places. [2023-11-29 00:56:46,175 INFO L231 Difference]: Finished difference. Result has 102 places, 82 transitions, 461 flow [2023-11-29 00:56:46,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=461, PETRI_PLACES=102, PETRI_TRANSITIONS=82} [2023-11-29 00:56:46,176 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 52 predicate places. [2023-11-29 00:56:46,176 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 82 transitions, 461 flow [2023-11-29 00:56:46,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 17.22222222222222) internal successors, (310), 18 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:46,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:56:46,176 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-29 00:56:46,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750d2178-334d-4457-874e-04923605ad49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-29 00:56:46,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750d2178-334d-4457-874e-04923605ad49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 00:56:46,377 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-29 00:56:46,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:56:46,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1113679150, now seen corresponding path program 2 times [2023-11-29 00:56:46,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:56:46,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621663779] [2023-11-29 00:56:46,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:56:46,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:56:46,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:56:46,536 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-29 00:56:46,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:56:46,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621663779] [2023-11-29 00:56:46,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621663779] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:56:46,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103630525] [2023-11-29 00:56:46,537 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:56:46,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:56:46,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750d2178-334d-4457-874e-04923605ad49/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:56:46,538 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750d2178-334d-4457-874e-04923605ad49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:56:46,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750d2178-334d-4457-874e-04923605ad49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 00:56:46,644 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 00:56:46,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:56:46,645 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 00:56:46,646 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:56:46,714 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-11-29 00:56:46,714 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:56:46,768 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-11-29 00:56:46,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103630525] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:56:46,769 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:56:46,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 3, 3] total 11 [2023-11-29 00:56:46,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723919935] [2023-11-29 00:56:46,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:56:46,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 00:56:46,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:56:46,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 00:56:46,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2023-11-29 00:56:46,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2023-11-29 00:56:46,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 82 transitions, 461 flow. Second operand has 13 states, 13 states have (on average 17.307692307692307) internal successors, (225), 13 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:46,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:56:46,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2023-11-29 00:56:46,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:56:49,577 INFO L124 PetriNetUnfolderBase]: 16885/25746 cut-off events. [2023-11-29 00:56:49,578 INFO L125 PetriNetUnfolderBase]: For 53883/55513 co-relation queries the response was YES. [2023-11-29 00:56:49,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82238 conditions, 25746 events. 16885/25746 cut-off events. For 53883/55513 co-relation queries the response was YES. Maximal size of possible extension queue 587. Compared 174830 event pairs, 3268 based on Foata normal form. 674/26209 useless extension candidates. Maximal degree in co-relation 63694. Up to 6453 conditions per place. [2023-11-29 00:56:49,658 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 0 selfloop transitions, 0 changer transitions 271/271 dead transitions. [2023-11-29 00:56:49,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 271 transitions, 1993 flow [2023-11-29 00:56:49,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 00:56:49,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-29 00:56:49,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 397 transitions. [2023-11-29 00:56:49,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5063775510204082 [2023-11-29 00:56:49,661 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 397 transitions. [2023-11-29 00:56:49,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 397 transitions. [2023-11-29 00:56:49,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:56:49,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 397 transitions. [2023-11-29 00:56:49,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 24.8125) internal successors, (397), 16 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:49,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 49.0) internal successors, (833), 17 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:49,664 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 49.0) internal successors, (833), 17 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:49,664 INFO L175 Difference]: Start difference. First operand has 102 places, 82 transitions, 461 flow. Second operand 16 states and 397 transitions. [2023-11-29 00:56:49,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 271 transitions, 1993 flow [2023-11-29 00:56:49,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 271 transitions, 1930 flow, removed 15 selfloop flow, removed 12 redundant places. [2023-11-29 00:56:49,851 INFO L231 Difference]: Finished difference. Result has 104 places, 0 transitions, 0 flow [2023-11-29 00:56:49,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=0, PETRI_PLACES=104, PETRI_TRANSITIONS=0} [2023-11-29 00:56:49,852 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 54 predicate places. [2023-11-29 00:56:49,852 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 0 transitions, 0 flow [2023-11-29 00:56:49,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 17.307692307692307) internal successors, (225), 13 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:56:49,854 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 17 remaining) [2023-11-29 00:56:49,854 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2023-11-29 00:56:49,854 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2023-11-29 00:56:49,854 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2023-11-29 00:56:49,854 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2023-11-29 00:56:49,854 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2023-11-29 00:56:49,854 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2023-11-29 00:56:49,855 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2023-11-29 00:56:49,855 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 17 remaining) [2023-11-29 00:56:49,855 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 17 remaining) [2023-11-29 00:56:49,855 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 17 remaining) [2023-11-29 00:56:49,855 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2023-11-29 00:56:49,855 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2023-11-29 00:56:49,855 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2023-11-29 00:56:49,855 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2023-11-29 00:56:49,855 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2023-11-29 00:56:49,855 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2023-11-29 00:56:49,860 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750d2178-334d-4457-874e-04923605ad49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 00:56:50,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750d2178-334d-4457-874e-04923605ad49/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 00:56:50,056 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:56:50,060 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-29 00:56:50,060 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 00:56:50,064 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 12:56:50 BasicIcfg [2023-11-29 00:56:50,064 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 00:56:50,064 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 00:56:50,064 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 00:56:50,064 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 00:56:50,065 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:56:27" (3/4) ... [2023-11-29 00:56:50,066 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-29 00:56:50,068 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-29 00:56:50,068 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-29 00:56:50,068 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-11-29 00:56:50,073 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 96 nodes and edges [2023-11-29 00:56:50,073 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 26 nodes and edges [2023-11-29 00:56:50,073 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2023-11-29 00:56:50,073 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-29 00:56:50,138 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750d2178-334d-4457-874e-04923605ad49/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 00:56:50,138 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750d2178-334d-4457-874e-04923605ad49/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-29 00:56:50,138 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 00:56:50,139 INFO L158 Benchmark]: Toolchain (without parser) took 23925.37ms. Allocated memory was 237.0MB in the beginning and 1.9GB in the end (delta: 1.6GB). Free memory was 200.4MB in the beginning and 1.0GB in the end (delta: -802.3MB). Peak memory consumption was 843.5MB. Max. memory is 16.1GB. [2023-11-29 00:56:50,139 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 134.2MB. Free memory is still 80.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 00:56:50,139 INFO L158 Benchmark]: CACSL2BoogieTranslator took 249.55ms. Allocated memory is still 237.0MB. Free memory was 199.8MB in the beginning and 188.6MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-29 00:56:50,139 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.43ms. Allocated memory is still 237.0MB. Free memory was 188.5MB in the beginning and 186.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 00:56:50,140 INFO L158 Benchmark]: Boogie Preprocessor took 55.55ms. Allocated memory is still 237.0MB. Free memory was 186.5MB in the beginning and 183.6MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 00:56:50,140 INFO L158 Benchmark]: RCFGBuilder took 654.61ms. Allocated memory is still 237.0MB. Free memory was 183.6MB in the beginning and 139.6MB in the end (delta: 44.0MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. [2023-11-29 00:56:50,140 INFO L158 Benchmark]: TraceAbstraction took 22849.44ms. Allocated memory was 237.0MB in the beginning and 1.9GB in the end (delta: 1.6GB). Free memory was 138.9MB in the beginning and 1.0GB in the end (delta: -869.4MB). Peak memory consumption was 952.6MB. Max. memory is 16.1GB. [2023-11-29 00:56:50,140 INFO L158 Benchmark]: Witness Printer took 73.95ms. Allocated memory is still 1.9GB. Free memory was 1.0GB in the beginning and 1.0GB in the end (delta: 5.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-29 00:56:50,142 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 134.2MB. Free memory is still 80.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 249.55ms. Allocated memory is still 237.0MB. Free memory was 199.8MB in the beginning and 188.6MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.43ms. Allocated memory is still 237.0MB. Free memory was 188.5MB in the beginning and 186.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 55.55ms. Allocated memory is still 237.0MB. Free memory was 186.5MB in the beginning and 183.6MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 654.61ms. Allocated memory is still 237.0MB. Free memory was 183.6MB in the beginning and 139.6MB in the end (delta: 44.0MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. * TraceAbstraction took 22849.44ms. Allocated memory was 237.0MB in the beginning and 1.9GB in the end (delta: 1.6GB). Free memory was 138.9MB in the beginning and 1.0GB in the end (delta: -869.4MB). Peak memory consumption was 952.6MB. Max. memory is 16.1GB. * Witness Printer took 73.95ms. Allocated memory is still 1.9GB. Free memory was 1.0GB in the beginning and 1.0GB in the end (delta: 5.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 46]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 46]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 70]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 70]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 110]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 110]: 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 7 procedures, 76 locations, 17 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: 22.7s, OverallIterations: 16, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 15.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1910 SdHoareTripleChecker+Valid, 3.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1807 mSDsluCounter, 1416 SdHoareTripleChecker+Invalid, 3.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1395 mSDsCounter, 55 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6511 IncrementalHoareTripleChecker+Invalid, 6566 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 55 mSolverCounterUnsat, 21 mSDtfsCounter, 6511 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 512 GetRequests, 289 SyntacticMatches, 7 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 813 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=461occurred in iteration=15, InterpolantAutomatonStates: 143, 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: 0.2s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 462 NumberOfCodeBlocks, 405 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 591 ConstructedInterpolants, 0 QuantifiedInterpolants, 1927 SizeOfPredicates, 38 NumberOfNonLiveVariables, 1495 ConjunctsInSsa, 70 ConjunctsInUnsatCore, 35 InterpolantComputations, 8 PerfectInterpolantSequences, 272/460 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-29 00:56:50,156 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_750d2178-334d-4457-874e-04923605ad49/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE