./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_21-deref_read_racing.i --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_528359c7-b749-4a2e-a36e-61857a8176d1/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528359c7-b749-4a2e-a36e-61857a8176d1/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_528359c7-b749-4a2e-a36e-61857a8176d1/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528359c7-b749-4a2e-a36e-61857a8176d1/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_21-deref_read_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528359c7-b749-4a2e-a36e-61857a8176d1/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_528359c7-b749-4a2e-a36e-61857a8176d1/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 cb010ae024b402436affeb854f96a5f9e0df3d8ec2cfe8b3a7f33676b7169a2c --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 00:49:56,895 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 00:49:56,960 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528359c7-b749-4a2e-a36e-61857a8176d1/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 00:49:56,965 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 00:49:56,966 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 00:49:56,992 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 00:49:56,992 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 00:49:56,993 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 00:49:56,993 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 00:49:56,994 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 00:49:56,995 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 00:49:56,995 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 00:49:56,996 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 00:49:56,996 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 00:49:56,997 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 00:49:56,997 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 00:49:56,998 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 00:49:56,998 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 00:49:56,999 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 00:49:56,999 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 00:49:57,000 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 00:49:57,001 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 00:49:57,001 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 00:49:57,001 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 00:49:57,002 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 00:49:57,002 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 00:49:57,003 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 00:49:57,003 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 00:49:57,003 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 00:49:57,004 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 00:49:57,004 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 00:49:57,004 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 00:49:57,005 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 00:49:57,005 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:49:57,005 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 00:49:57,005 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 00:49:57,006 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 00:49:57,006 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 00:49:57,006 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 00:49:57,006 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 00:49:57,006 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 00:49:57,007 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 00:49:57,007 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 00:49:57,007 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 00:49:57,007 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_528359c7-b749-4a2e-a36e-61857a8176d1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528359c7-b749-4a2e-a36e-61857a8176d1/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb010ae024b402436affeb854f96a5f9e0df3d8ec2cfe8b3a7f33676b7169a2c [2023-11-29 00:49:57,228 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 00:49:57,247 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 00:49:57,249 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 00:49:57,250 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 00:49:57,251 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 00:49:57,252 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528359c7-b749-4a2e-a36e-61857a8176d1/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/goblint-regression/28-race_reach_21-deref_read_racing.i [2023-11-29 00:50:00,057 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:50:00,291 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:50:00,292 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528359c7-b749-4a2e-a36e-61857a8176d1/sv-benchmarks/c/goblint-regression/28-race_reach_21-deref_read_racing.i [2023-11-29 00:50:00,307 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528359c7-b749-4a2e-a36e-61857a8176d1/bin/uautomizer-verify-BQ2R08f2Ya/data/260c6d5f4/3d8f5081d79c4f1bad6e1e78ed1b716c/FLAG5d1b65f50 [2023-11-29 00:50:00,319 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528359c7-b749-4a2e-a36e-61857a8176d1/bin/uautomizer-verify-BQ2R08f2Ya/data/260c6d5f4/3d8f5081d79c4f1bad6e1e78ed1b716c [2023-11-29 00:50:00,322 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:50:00,324 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:50:00,325 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:50:00,325 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:50:00,329 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:50:00,330 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:50:00" (1/1) ... [2023-11-29 00:50:00,331 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7eed2f93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:50:00, skipping insertion in model container [2023-11-29 00:50:00,331 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:50:00" (1/1) ... [2023-11-29 00:50:00,373 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:50:00,640 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:50:00,651 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 00:50:00,691 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:50:00,726 INFO L206 MainTranslator]: Completed translation [2023-11-29 00:50:00,726 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:50:00 WrapperNode [2023-11-29 00:50:00,727 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 00:50:00,728 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 00:50:00,728 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 00:50:00,728 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 00:50:00,733 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:50:00" (1/1) ... [2023-11-29 00:50:00,747 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:50:00" (1/1) ... [2023-11-29 00:50:00,768 INFO L138 Inliner]: procedures = 171, calls = 40, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 73 [2023-11-29 00:50:00,768 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 00:50:00,769 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 00:50:00,769 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 00:50:00,769 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 00:50:00,781 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:50:00" (1/1) ... [2023-11-29 00:50:00,781 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:50:00" (1/1) ... [2023-11-29 00:50:00,785 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:50:00" (1/1) ... [2023-11-29 00:50:00,800 INFO L175 MemorySlicer]: Split 19 memory accesses to 5 slices as follows [2, 5, 6, 1, 5]. 32 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 5, 1, 0, 5]. The 3 writes are split as follows [0, 0, 2, 1, 0]. [2023-11-29 00:50:00,800 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:50:00" (1/1) ... [2023-11-29 00:50:00,801 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:50:00" (1/1) ... [2023-11-29 00:50:00,809 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:50:00" (1/1) ... [2023-11-29 00:50:00,813 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:50:00" (1/1) ... [2023-11-29 00:50:00,815 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:50:00" (1/1) ... [2023-11-29 00:50:00,817 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:50:00" (1/1) ... [2023-11-29 00:50:00,820 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 00:50:00,821 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 00:50:00,822 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 00:50:00,822 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 00:50:00,823 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:50:00" (1/1) ... [2023-11-29 00:50:00,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:50:00,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528359c7-b749-4a2e-a36e-61857a8176d1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:50:00,851 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528359c7-b749-4a2e-a36e-61857a8176d1/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 00:50:00,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528359c7-b749-4a2e-a36e-61857a8176d1/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 00:50:00,884 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 00:50:00,884 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 00:50:00,885 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 00:50:00,885 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 00:50:00,885 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 00:50:00,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 00:50:00,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 00:50:00,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 00:50:00,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 00:50:00,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 00:50:00,886 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-29 00:50:00,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 00:50:00,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 00:50:00,886 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-29 00:50:00,886 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-29 00:50:00,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 00:50:00,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 00:50:00,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 00:50:00,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 00:50:00,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 00:50:00,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 00:50:00,887 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-29 00:50:00,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 00:50:00,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 00:50:00,889 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 00:50:01,016 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 00:50:01,018 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 00:50:01,212 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 00:50:01,399 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 00:50:01,400 INFO L309 CfgBuilder]: Removed 9 assume(true) statements. [2023-11-29 00:50:01,400 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:50:01 BoogieIcfgContainer [2023-11-29 00:50:01,400 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 00:50:01,403 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 00:50:01,403 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 00:50:01,407 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 00:50:01,407 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:50:00" (1/3) ... [2023-11-29 00:50:01,408 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25c2ca1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:50:01, skipping insertion in model container [2023-11-29 00:50:01,408 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:50:00" (2/3) ... [2023-11-29 00:50:01,408 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25c2ca1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:50:01, skipping insertion in model container [2023-11-29 00:50:01,408 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:50:01" (3/3) ... [2023-11-29 00:50:01,410 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_21-deref_read_racing.i [2023-11-29 00:50:01,419 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 00:50:01,429 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 00:50:01,430 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-29 00:50:01,430 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 00:50:01,468 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 00:50:01,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 49 transitions, 102 flow [2023-11-29 00:50:01,539 INFO L124 PetriNetUnfolderBase]: 10/59 cut-off events. [2023-11-29 00:50:01,539 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 00:50:01,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 59 events. 10/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 147 event pairs, 0 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 46. Up to 4 conditions per place. [2023-11-29 00:50:01,543 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 49 transitions, 102 flow [2023-11-29 00:50:01,547 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 49 transitions, 102 flow [2023-11-29 00:50:01,557 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:50:01,564 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;@51fd4407, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:50:01,564 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-11-29 00:50:01,571 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 00:50:01,571 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2023-11-29 00:50:01,571 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 00:50:01,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:50:01,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 00:50:01,572 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-11-29 00:50:01,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:50:01,578 INFO L85 PathProgramCache]: Analyzing trace with hash 325396486, now seen corresponding path program 1 times [2023-11-29 00:50:01,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:50:01,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747172857] [2023-11-29 00:50:01,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:50:01,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:50:01,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:50:01,868 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 00:50:01,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:50:01,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747172857] [2023-11-29 00:50:01,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747172857] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:50:01,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:50:01,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:50:01,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435220620] [2023-11-29 00:50:01,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:50:01,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:50:01,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:50:01,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:50:01,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:50:01,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 49 [2023-11-29 00:50:01,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 49 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:50:01,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:50:01,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 49 [2023-11-29 00:50:01,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:50:02,095 INFO L124 PetriNetUnfolderBase]: 88/260 cut-off events. [2023-11-29 00:50:02,095 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 00:50:02,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 463 conditions, 260 events. 88/260 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1215 event pairs, 0 based on Foata normal form. 60/306 useless extension candidates. Maximal degree in co-relation 440. Up to 162 conditions per place. [2023-11-29 00:50:02,100 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 41 selfloop transitions, 3 changer transitions 0/62 dead transitions. [2023-11-29 00:50:02,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 62 transitions, 216 flow [2023-11-29 00:50:02,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:50:02,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:50:02,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 139 transitions. [2023-11-29 00:50:02,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7091836734693877 [2023-11-29 00:50:02,115 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 139 transitions. [2023-11-29 00:50:02,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 139 transitions. [2023-11-29 00:50:02,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:50:02,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 139 transitions. [2023-11-29 00:50:02,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:50:02,124 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 00:50:02,124 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 00:50:02,126 INFO L175 Difference]: Start difference. First operand has 44 places, 49 transitions, 102 flow. Second operand 4 states and 139 transitions. [2023-11-29 00:50:02,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 62 transitions, 216 flow [2023-11-29 00:50:02,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 62 transitions, 216 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 00:50:02,133 INFO L231 Difference]: Finished difference. Result has 46 places, 39 transitions, 92 flow [2023-11-29 00:50:02,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=92, PETRI_PLACES=46, PETRI_TRANSITIONS=39} [2023-11-29 00:50:02,139 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 2 predicate places. [2023-11-29 00:50:02,139 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 39 transitions, 92 flow [2023-11-29 00:50:02,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:50:02,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:50:02,140 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-29 00:50:02,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 00:50:02,140 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-11-29 00:50:02,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:50:02,141 INFO L85 PathProgramCache]: Analyzing trace with hash 145832310, now seen corresponding path program 1 times [2023-11-29 00:50:02,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:50:02,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855747991] [2023-11-29 00:50:02,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:50:02,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:50:02,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 00:50:02,169 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 00:50:02,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 00:50:02,208 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 00:50:02,209 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 00:50:02,211 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2023-11-29 00:50:02,212 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2023-11-29 00:50:02,213 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2023-11-29 00:50:02,213 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2023-11-29 00:50:02,213 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 11 remaining) [2023-11-29 00:50:02,214 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 11 remaining) [2023-11-29 00:50:02,214 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 11 remaining) [2023-11-29 00:50:02,214 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2023-11-29 00:50:02,214 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2023-11-29 00:50:02,215 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2023-11-29 00:50:02,215 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2023-11-29 00:50:02,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 00:50:02,215 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-29 00:50:02,218 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 00:50:02,218 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-29 00:50:02,242 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 00:50:02,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 81 transitions, 172 flow [2023-11-29 00:50:02,264 INFO L124 PetriNetUnfolderBase]: 18/106 cut-off events. [2023-11-29 00:50:02,264 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 00:50:02,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 106 events. 18/106 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 345 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 77. Up to 6 conditions per place. [2023-11-29 00:50:02,266 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 81 transitions, 172 flow [2023-11-29 00:50:02,268 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 81 transitions, 172 flow [2023-11-29 00:50:02,270 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:50:02,271 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;@51fd4407, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:50:02,271 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2023-11-29 00:50:02,275 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 00:50:02,275 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2023-11-29 00:50:02,275 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 00:50:02,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:50:02,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 00:50:02,276 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-29 00:50:02,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:50:02,276 INFO L85 PathProgramCache]: Analyzing trace with hash 402724982, now seen corresponding path program 1 times [2023-11-29 00:50:02,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:50:02,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061481271] [2023-11-29 00:50:02,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:50:02,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:50:02,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:50:02,344 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 00:50:02,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:50:02,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061481271] [2023-11-29 00:50:02,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061481271] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:50:02,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:50:02,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:50:02,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287636767] [2023-11-29 00:50:02,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:50:02,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:50:02,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:50:02,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:50:02,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:50:02,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 81 [2023-11-29 00:50:02,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 81 transitions, 172 flow. Second operand has 4 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 00:50:02,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:50:02,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 81 [2023-11-29 00:50:02,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:50:03,215 INFO L124 PetriNetUnfolderBase]: 2860/5993 cut-off events. [2023-11-29 00:50:03,215 INFO L125 PetriNetUnfolderBase]: For 46/46 co-relation queries the response was YES. [2023-11-29 00:50:03,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10589 conditions, 5993 events. 2860/5993 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 47349 event pairs, 1596 based on Foata normal form. 1239/6669 useless extension candidates. Maximal degree in co-relation 2143. Up to 4518 conditions per place. [2023-11-29 00:50:03,268 INFO L140 encePairwiseOnDemand]: 61/81 looper letters, 57 selfloop transitions, 3 changer transitions 0/92 dead transitions. [2023-11-29 00:50:03,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 92 transitions, 314 flow [2023-11-29 00:50:03,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:50:03,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:50:03,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 217 transitions. [2023-11-29 00:50:03,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6697530864197531 [2023-11-29 00:50:03,271 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 217 transitions. [2023-11-29 00:50:03,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 217 transitions. [2023-11-29 00:50:03,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:50:03,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 217 transitions. [2023-11-29 00:50:03,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:50:03,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 81.0) internal successors, (405), 5 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:50:03,275 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 81.0) internal successors, (405), 5 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:50:03,276 INFO L175 Difference]: Start difference. First operand has 72 places, 81 transitions, 172 flow. Second operand 4 states and 217 transitions. [2023-11-29 00:50:03,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 92 transitions, 314 flow [2023-11-29 00:50:03,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 92 transitions, 314 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 00:50:03,279 INFO L231 Difference]: Finished difference. Result has 77 places, 69 transitions, 168 flow [2023-11-29 00:50:03,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=168, PETRI_PLACES=77, PETRI_TRANSITIONS=69} [2023-11-29 00:50:03,280 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 5 predicate places. [2023-11-29 00:50:03,280 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 69 transitions, 168 flow [2023-11-29 00:50:03,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 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 00:50:03,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:50:03,281 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-11-29 00:50:03,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 00:50:03,281 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-29 00:50:03,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:50:03,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1805801762, now seen corresponding path program 1 times [2023-11-29 00:50:03,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:50:03,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369992033] [2023-11-29 00:50:03,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:50:03,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:50:03,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:50:03,413 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:50:03,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:50:03,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369992033] [2023-11-29 00:50:03,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369992033] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:50:03,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564726701] [2023-11-29 00:50:03,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:50:03,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:50:03,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528359c7-b749-4a2e-a36e-61857a8176d1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:50:03,417 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528359c7-b749-4a2e-a36e-61857a8176d1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:50:03,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528359c7-b749-4a2e-a36e-61857a8176d1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 00:50:03,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:50:03,520 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 00:50:03,522 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:50:03,585 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:50:03,586 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:50:03,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564726701] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:50:03,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:50:03,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-29 00:50:03,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104905012] [2023-11-29 00:50:03,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:50:03,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:50:03,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:50:03,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:50:03,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:50:03,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 81 [2023-11-29 00:50:03,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 69 transitions, 168 flow. Second operand has 6 states, 6 states have (on average 33.5) internal successors, (201), 6 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:50:03,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:50:03,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 81 [2023-11-29 00:50:03,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:50:04,436 INFO L124 PetriNetUnfolderBase]: 2596/5277 cut-off events. [2023-11-29 00:50:04,436 INFO L125 PetriNetUnfolderBase]: For 622/622 co-relation queries the response was YES. [2023-11-29 00:50:04,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10105 conditions, 5277 events. 2596/5277 cut-off events. For 622/622 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 40761 event pairs, 252 based on Foata normal form. 144/5116 useless extension candidates. Maximal degree in co-relation 851. Up to 2156 conditions per place. [2023-11-29 00:50:04,484 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 97 selfloop transitions, 6 changer transitions 0/135 dead transitions. [2023-11-29 00:50:04,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 135 transitions, 504 flow [2023-11-29 00:50:04,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:50:04,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 00:50:04,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 296 transitions. [2023-11-29 00:50:04,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6090534979423868 [2023-11-29 00:50:04,487 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 296 transitions. [2023-11-29 00:50:04,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 296 transitions. [2023-11-29 00:50:04,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:50:04,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 296 transitions. [2023-11-29 00:50:04,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 49.333333333333336) internal successors, (296), 6 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:50:04,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 81.0) internal successors, (567), 7 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:50:04,492 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 81.0) internal successors, (567), 7 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:50:04,492 INFO L175 Difference]: Start difference. First operand has 77 places, 69 transitions, 168 flow. Second operand 6 states and 296 transitions. [2023-11-29 00:50:04,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 135 transitions, 504 flow [2023-11-29 00:50:04,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 135 transitions, 502 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:50:04,497 INFO L231 Difference]: Finished difference. Result has 80 places, 68 transitions, 174 flow [2023-11-29 00:50:04,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=174, PETRI_PLACES=80, PETRI_TRANSITIONS=68} [2023-11-29 00:50:04,498 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 8 predicate places. [2023-11-29 00:50:04,499 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 68 transitions, 174 flow [2023-11-29 00:50:04,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.5) internal successors, (201), 6 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:50:04,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:50:04,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:50:04,507 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528359c7-b749-4a2e-a36e-61857a8176d1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 00:50:04,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528359c7-b749-4a2e-a36e-61857a8176d1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:50:04,706 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-29 00:50:04,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:50:04,706 INFO L85 PathProgramCache]: Analyzing trace with hash -792867480, now seen corresponding path program 1 times [2023-11-29 00:50:04,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:50:04,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023984553] [2023-11-29 00:50:04,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:50:04,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:50:04,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:50:04,794 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 00:50:04,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:50:04,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023984553] [2023-11-29 00:50:04,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023984553] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:50:04,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:50:04,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:50:04,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885349568] [2023-11-29 00:50:04,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:50:04,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:50:04,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:50:04,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:50:04,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:50:04,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 81 [2023-11-29 00:50:04,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 68 transitions, 174 flow. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:50:04,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:50:04,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 81 [2023-11-29 00:50:04,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:50:05,503 INFO L124 PetriNetUnfolderBase]: 2713/5805 cut-off events. [2023-11-29 00:50:05,503 INFO L125 PetriNetUnfolderBase]: For 1650/1803 co-relation queries the response was YES. [2023-11-29 00:50:05,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11288 conditions, 5805 events. 2713/5805 cut-off events. For 1650/1803 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 45384 event pairs, 853 based on Foata normal form. 117/5615 useless extension candidates. Maximal degree in co-relation 9045. Up to 3790 conditions per place. [2023-11-29 00:50:05,550 INFO L140 encePairwiseOnDemand]: 75/81 looper letters, 81 selfloop transitions, 6 changer transitions 0/118 dead transitions. [2023-11-29 00:50:05,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 118 transitions, 514 flow [2023-11-29 00:50:05,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:50:05,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 00:50:05,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 245 transitions. [2023-11-29 00:50:05,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6049382716049383 [2023-11-29 00:50:05,552 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 245 transitions. [2023-11-29 00:50:05,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 245 transitions. [2023-11-29 00:50:05,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:50:05,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 245 transitions. [2023-11-29 00:50:05,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 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 00:50:05,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:50:05,556 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:50:05,556 INFO L175 Difference]: Start difference. First operand has 80 places, 68 transitions, 174 flow. Second operand 5 states and 245 transitions. [2023-11-29 00:50:05,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 118 transitions, 514 flow [2023-11-29 00:50:05,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 118 transitions, 479 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-11-29 00:50:05,561 INFO L231 Difference]: Finished difference. Result has 83 places, 73 transitions, 206 flow [2023-11-29 00:50:05,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=206, PETRI_PLACES=83, PETRI_TRANSITIONS=73} [2023-11-29 00:50:05,562 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 11 predicate places. [2023-11-29 00:50:05,563 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 73 transitions, 206 flow [2023-11-29 00:50:05,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:50:05,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:50:05,563 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2023-11-29 00:50:05,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 00:50:05,564 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-29 00:50:05,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:50:05,564 INFO L85 PathProgramCache]: Analyzing trace with hash -145279386, now seen corresponding path program 1 times [2023-11-29 00:50:05,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:50:05,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741598101] [2023-11-29 00:50:05,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:50:05,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:50:05,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:50:05,609 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:50:05,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:50:05,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741598101] [2023-11-29 00:50:05,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741598101] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:50:05,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:50:05,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:50:05,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444542200] [2023-11-29 00:50:05,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:50:05,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:50:05,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:50:05,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:50:05,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:50:05,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 81 [2023-11-29 00:50:05,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 73 transitions, 206 flow. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:50:05,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:50:05,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 81 [2023-11-29 00:50:05,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:50:06,232 INFO L124 PetriNetUnfolderBase]: 2459/4813 cut-off events. [2023-11-29 00:50:06,232 INFO L125 PetriNetUnfolderBase]: For 1384/1384 co-relation queries the response was YES. [2023-11-29 00:50:06,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9943 conditions, 4813 events. 2459/4813 cut-off events. For 1384/1384 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 35889 event pairs, 397 based on Foata normal form. 152/4900 useless extension candidates. Maximal degree in co-relation 9232. Up to 2725 conditions per place. [2023-11-29 00:50:06,287 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 89 selfloop transitions, 6 changer transitions 0/127 dead transitions. [2023-11-29 00:50:06,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 127 transitions, 548 flow [2023-11-29 00:50:06,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:50:06,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:50:06,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 207 transitions. [2023-11-29 00:50:06,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6388888888888888 [2023-11-29 00:50:06,289 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 207 transitions. [2023-11-29 00:50:06,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 207 transitions. [2023-11-29 00:50:06,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:50:06,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 207 transitions. [2023-11-29 00:50:06,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 51.75) internal successors, (207), 4 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:50:06,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 81.0) internal successors, (405), 5 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:50:06,291 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 81.0) internal successors, (405), 5 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:50:06,291 INFO L175 Difference]: Start difference. First operand has 83 places, 73 transitions, 206 flow. Second operand 4 states and 207 transitions. [2023-11-29 00:50:06,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 127 transitions, 548 flow [2023-11-29 00:50:06,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 127 transitions, 544 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-29 00:50:06,301 INFO L231 Difference]: Finished difference. Result has 85 places, 73 transitions, 218 flow [2023-11-29 00:50:06,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=218, PETRI_PLACES=85, PETRI_TRANSITIONS=73} [2023-11-29 00:50:06,302 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 13 predicate places. [2023-11-29 00:50:06,303 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 73 transitions, 218 flow [2023-11-29 00:50:06,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:50:06,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:50:06,303 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1] [2023-11-29 00:50:06,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 00:50:06,304 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-29 00:50:06,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:50:06,304 INFO L85 PathProgramCache]: Analyzing trace with hash 2120443374, now seen corresponding path program 1 times [2023-11-29 00:50:06,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:50:06,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303366832] [2023-11-29 00:50:06,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:50:06,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:50:06,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 00:50:06,321 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 00:50:06,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 00:50:06,338 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 00:50:06,339 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 00:50:06,339 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2023-11-29 00:50:06,339 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 15 remaining) [2023-11-29 00:50:06,340 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 15 remaining) [2023-11-29 00:50:06,340 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 15 remaining) [2023-11-29 00:50:06,340 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 15 remaining) [2023-11-29 00:50:06,340 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 15 remaining) [2023-11-29 00:50:06,340 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 15 remaining) [2023-11-29 00:50:06,341 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 15 remaining) [2023-11-29 00:50:06,341 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 15 remaining) [2023-11-29 00:50:06,341 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 15 remaining) [2023-11-29 00:50:06,341 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 15 remaining) [2023-11-29 00:50:06,342 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 15 remaining) [2023-11-29 00:50:06,342 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 15 remaining) [2023-11-29 00:50:06,342 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 15 remaining) [2023-11-29 00:50:06,342 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 15 remaining) [2023-11-29 00:50:06,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 00:50:06,343 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-29 00:50:06,344 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 00:50:06,344 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-29 00:50:06,373 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 00:50:06,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 113 transitions, 244 flow [2023-11-29 00:50:06,390 INFO L124 PetriNetUnfolderBase]: 26/153 cut-off events. [2023-11-29 00:50:06,390 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-29 00:50:06,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 153 events. 26/153 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 542 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 117. Up to 8 conditions per place. [2023-11-29 00:50:06,391 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 113 transitions, 244 flow [2023-11-29 00:50:06,393 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 113 transitions, 244 flow [2023-11-29 00:50:06,394 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:50:06,395 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;@51fd4407, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:50:06,395 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-11-29 00:50:06,397 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 00:50:06,398 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2023-11-29 00:50:06,398 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 00:50:06,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:50:06,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 00:50:06,398 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 00:50:06,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:50:06,399 INFO L85 PathProgramCache]: Analyzing trace with hash 510591238, now seen corresponding path program 1 times [2023-11-29 00:50:06,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:50:06,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239079246] [2023-11-29 00:50:06,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:50:06,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:50:06,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:50:06,433 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 00:50:06,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:50:06,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239079246] [2023-11-29 00:50:06,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239079246] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:50:06,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:50:06,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:50:06,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218933355] [2023-11-29 00:50:06,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:50:06,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:50:06,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:50:06,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:50:06,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:50:06,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 113 [2023-11-29 00:50:06,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 113 transitions, 244 flow. Second operand has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:50:06,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:50:06,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 113 [2023-11-29 00:50:06,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:50:14,406 INFO L124 PetriNetUnfolderBase]: 53548/96270 cut-off events. [2023-11-29 00:50:14,406 INFO L125 PetriNetUnfolderBase]: For 1012/1012 co-relation queries the response was YES. [2023-11-29 00:50:14,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171139 conditions, 96270 events. 53548/96270 cut-off events. For 1012/1012 co-relation queries the response was YES. Maximal size of possible extension queue 2347. Compared 967762 event pairs, 44916 based on Foata normal form. 21323/109268 useless extension candidates. Maximal degree in co-relation 64385. Up to 74214 conditions per place. [2023-11-29 00:50:14,918 INFO L140 encePairwiseOnDemand]: 87/113 looper letters, 69 selfloop transitions, 3 changer transitions 0/118 dead transitions. [2023-11-29 00:50:14,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 118 transitions, 398 flow [2023-11-29 00:50:14,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:50:14,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:50:14,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 291 transitions. [2023-11-29 00:50:14,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6438053097345132 [2023-11-29 00:50:14,920 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 291 transitions. [2023-11-29 00:50:14,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 291 transitions. [2023-11-29 00:50:14,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:50:14,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 291 transitions. [2023-11-29 00:50:14,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:50:14,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 113.0) internal successors, (565), 5 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:50:14,923 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 113.0) internal successors, (565), 5 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:50:14,923 INFO L175 Difference]: Start difference. First operand has 100 places, 113 transitions, 244 flow. Second operand 4 states and 291 transitions. [2023-11-29 00:50:14,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 118 transitions, 398 flow [2023-11-29 00:50:14,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 118 transitions, 396 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-29 00:50:14,927 INFO L231 Difference]: Finished difference. Result has 105 places, 95 transitions, 226 flow [2023-11-29 00:50:14,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=226, PETRI_PLACES=105, PETRI_TRANSITIONS=95} [2023-11-29 00:50:14,928 INFO L281 CegarLoopForPetriNet]: 100 programPoint places, 5 predicate places. [2023-11-29 00:50:14,928 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 95 transitions, 226 flow [2023-11-29 00:50:14,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:50:14,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:50:14,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:50:14,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 00:50:14,929 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 00:50:14,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:50:14,929 INFO L85 PathProgramCache]: Analyzing trace with hash -469904377, now seen corresponding path program 1 times [2023-11-29 00:50:14,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:50:14,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624542876] [2023-11-29 00:50:14,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:50:14,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:50:14,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:50:14,994 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 00:50:14,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:50:14,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624542876] [2023-11-29 00:50:14,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624542876] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:50:14,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:50:14,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:50:14,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758272390] [2023-11-29 00:50:14,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:50:14,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:50:14,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:50:14,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:50:14,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:50:15,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 113 [2023-11-29 00:50:15,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 95 transitions, 226 flow. Second operand has 4 states, 4 states have (on average 47.75) internal successors, (191), 4 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:50:15,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:50:15,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 113 [2023-11-29 00:50:15,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:50:22,567 INFO L124 PetriNetUnfolderBase]: 53257/92853 cut-off events. [2023-11-29 00:50:22,567 INFO L125 PetriNetUnfolderBase]: For 7444/11887 co-relation queries the response was YES. [2023-11-29 00:50:22,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174263 conditions, 92853 events. 53257/92853 cut-off events. For 7444/11887 co-relation queries the response was YES. Maximal size of possible extension queue 2349. Compared 895321 event pairs, 21193 based on Foata normal form. 1413/89647 useless extension candidates. Maximal degree in co-relation 149504. Up to 68326 conditions per place. [2023-11-29 00:50:23,024 INFO L140 encePairwiseOnDemand]: 106/113 looper letters, 117 selfloop transitions, 8 changer transitions 0/171 dead transitions. [2023-11-29 00:50:23,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 171 transitions, 685 flow [2023-11-29 00:50:23,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:50:23,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 00:50:23,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 353 transitions. [2023-11-29 00:50:23,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6247787610619469 [2023-11-29 00:50:23,026 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 353 transitions. [2023-11-29 00:50:23,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 353 transitions. [2023-11-29 00:50:23,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:50:23,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 353 transitions. [2023-11-29 00:50:23,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 70.6) internal successors, (353), 5 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:50:23,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:50:23,029 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:50:23,029 INFO L175 Difference]: Start difference. First operand has 105 places, 95 transitions, 226 flow. Second operand 5 states and 353 transitions. [2023-11-29 00:50:23,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 171 transitions, 685 flow [2023-11-29 00:50:23,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 171 transitions, 681 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:50:23,035 INFO L231 Difference]: Finished difference. Result has 111 places, 102 transitions, 285 flow [2023-11-29 00:50:23,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=285, PETRI_PLACES=111, PETRI_TRANSITIONS=102} [2023-11-29 00:50:23,037 INFO L281 CegarLoopForPetriNet]: 100 programPoint places, 11 predicate places. [2023-11-29 00:50:23,037 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 102 transitions, 285 flow [2023-11-29 00:50:23,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.75) internal successors, (191), 4 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:50:23,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:50:23,037 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-11-29 00:50:23,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 00:50:23,038 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 00:50:23,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:50:23,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1787330782, now seen corresponding path program 1 times [2023-11-29 00:50:23,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:50:23,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449199161] [2023-11-29 00:50:23,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:50:23,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:50:23,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:50:23,104 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:50:23,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:50:23,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449199161] [2023-11-29 00:50:23,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449199161] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:50:23,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978773494] [2023-11-29 00:50:23,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:50:23,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:50:23,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528359c7-b749-4a2e-a36e-61857a8176d1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:50:23,107 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528359c7-b749-4a2e-a36e-61857a8176d1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:50:23,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528359c7-b749-4a2e-a36e-61857a8176d1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 00:50:23,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:50:23,200 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 00:50:23,201 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:50:23,239 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:50:23,239 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:50:23,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978773494] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:50:23,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:50:23,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-29 00:50:23,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450938705] [2023-11-29 00:50:23,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:50:23,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:50:23,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:50:23,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:50:23,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:50:23,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 113 [2023-11-29 00:50:23,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 102 transitions, 285 flow. Second operand has 6 states, 6 states have (on average 47.5) internal successors, (285), 6 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:50:23,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:50:23,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 113 [2023-11-29 00:50:23,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:50:31,664 INFO L124 PetriNetUnfolderBase]: 54466/92502 cut-off events. [2023-11-29 00:50:31,664 INFO L125 PetriNetUnfolderBase]: For 23707/23707 co-relation queries the response was YES. [2023-11-29 00:50:31,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191203 conditions, 92502 events. 54466/92502 cut-off events. For 23707/23707 co-relation queries the response was YES. Maximal size of possible extension queue 2352. Compared 889938 event pairs, 9895 based on Foata normal form. 2120/89332 useless extension candidates. Maximal degree in co-relation 166213. Up to 39021 conditions per place. [2023-11-29 00:50:32,161 INFO L140 encePairwiseOnDemand]: 108/113 looper letters, 152 selfloop transitions, 6 changer transitions 0/204 dead transitions. [2023-11-29 00:50:32,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 204 transitions, 889 flow [2023-11-29 00:50:32,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:50:32,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 00:50:32,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 414 transitions. [2023-11-29 00:50:32,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6106194690265486 [2023-11-29 00:50:32,164 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 414 transitions. [2023-11-29 00:50:32,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 414 transitions. [2023-11-29 00:50:32,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:50:32,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 414 transitions. [2023-11-29 00:50:32,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 69.0) internal successors, (414), 6 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:50:32,167 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 113.0) internal successors, (791), 7 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:50:32,167 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 113.0) internal successors, (791), 7 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:50:32,167 INFO L175 Difference]: Start difference. First operand has 111 places, 102 transitions, 285 flow. Second operand 6 states and 414 transitions. [2023-11-29 00:50:32,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 204 transitions, 889 flow [2023-11-29 00:50:32,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 204 transitions, 889 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 00:50:32,193 INFO L231 Difference]: Finished difference. Result has 115 places, 101 transitions, 293 flow [2023-11-29 00:50:32,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=293, PETRI_PLACES=115, PETRI_TRANSITIONS=101} [2023-11-29 00:50:32,194 INFO L281 CegarLoopForPetriNet]: 100 programPoint places, 15 predicate places. [2023-11-29 00:50:32,194 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 101 transitions, 293 flow [2023-11-29 00:50:32,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 47.5) internal successors, (285), 6 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:50:32,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:50:32,194 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2023-11-29 00:50:32,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528359c7-b749-4a2e-a36e-61857a8176d1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-29 00:50:32,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_528359c7-b749-4a2e-a36e-61857a8176d1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:50:32,395 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 00:50:32,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:50:32,396 INFO L85 PathProgramCache]: Analyzing trace with hash -427320105, now seen corresponding path program 1 times [2023-11-29 00:50:32,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:50:32,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377786398] [2023-11-29 00:50:32,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:50:32,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:50:32,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:50:32,444 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:50:32,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:50:32,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377786398] [2023-11-29 00:50:32,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377786398] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:50:32,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:50:32,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:50:32,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228530702] [2023-11-29 00:50:32,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:50:32,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:50:32,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:50:32,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:50:32,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:50:32,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 113 [2023-11-29 00:50:32,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 101 transitions, 293 flow. Second operand has 4 states, 4 states have (on average 48.25) internal successors, (193), 4 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:50:32,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:50:32,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 113 [2023-11-29 00:50:32,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:50:39,666 INFO L124 PetriNetUnfolderBase]: 48905/78625 cut-off events. [2023-11-29 00:50:39,666 INFO L125 PetriNetUnfolderBase]: For 31519/31519 co-relation queries the response was YES. [2023-11-29 00:50:39,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172419 conditions, 78625 events. 48905/78625 cut-off events. For 31519/31519 co-relation queries the response was YES. Maximal size of possible extension queue 2025. Compared 692966 event pairs, 11379 based on Foata normal form. 2136/79378 useless extension candidates. Maximal degree in co-relation 150100. Up to 46837 conditions per place. [2023-11-29 00:50:40,049 INFO L140 encePairwiseOnDemand]: 108/113 looper letters, 129 selfloop transitions, 6 changer transitions 0/181 dead transitions. [2023-11-29 00:50:40,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 181 transitions, 793 flow [2023-11-29 00:50:40,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:50:40,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:50:40,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 297 transitions. [2023-11-29 00:50:40,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6570796460176991 [2023-11-29 00:50:40,051 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 297 transitions. [2023-11-29 00:50:40,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 297 transitions. [2023-11-29 00:50:40,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:50:40,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 297 transitions. [2023-11-29 00:50:40,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 74.25) internal successors, (297), 4 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:50:40,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 113.0) internal successors, (565), 5 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:50:40,053 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 113.0) internal successors, (565), 5 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:50:40,053 INFO L175 Difference]: Start difference. First operand has 115 places, 101 transitions, 293 flow. Second operand 4 states and 297 transitions. [2023-11-29 00:50:40,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 181 transitions, 793 flow [2023-11-29 00:50:40,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 181 transitions, 777 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-11-29 00:50:40,223 INFO L231 Difference]: Finished difference. Result has 113 places, 101 transitions, 293 flow [2023-11-29 00:50:40,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=293, PETRI_PLACES=113, PETRI_TRANSITIONS=101} [2023-11-29 00:50:40,223 INFO L281 CegarLoopForPetriNet]: 100 programPoint places, 13 predicate places. [2023-11-29 00:50:40,223 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 101 transitions, 293 flow [2023-11-29 00:50:40,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.25) internal successors, (193), 4 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:50:40,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:50:40,224 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:50:40,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 00:50:40,224 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 00:50:40,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:50:40,224 INFO L85 PathProgramCache]: Analyzing trace with hash 712825393, now seen corresponding path program 1 times [2023-11-29 00:50:40,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:50:40,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458505274] [2023-11-29 00:50:40,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:50:40,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:50:40,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:50:40,300 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 00:50:40,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:50:40,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458505274] [2023-11-29 00:50:40,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458505274] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:50:40,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:50:40,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:50:40,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668437380] [2023-11-29 00:50:40,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:50:40,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:50:40,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:50:40,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:50:40,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:50:40,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 113 [2023-11-29 00:50:40,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 101 transitions, 293 flow. Second operand has 4 states, 4 states have (on average 48.5) internal successors, (194), 4 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:50:40,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:50:40,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 113 [2023-11-29 00:50:40,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:50:49,443 INFO L124 PetriNetUnfolderBase]: 59547/104581 cut-off events. [2023-11-29 00:50:49,443 INFO L125 PetriNetUnfolderBase]: For 47291/47309 co-relation queries the response was YES. [2023-11-29 00:50:49,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 220889 conditions, 104581 events. 59547/104581 cut-off events. For 47291/47309 co-relation queries the response was YES. Maximal size of possible extension queue 2714. Compared 1036131 event pairs, 24388 based on Foata normal form. 2952/103726 useless extension candidates. Maximal degree in co-relation 192390. Up to 76883 conditions per place. [2023-11-29 00:50:49,942 INFO L140 encePairwiseOnDemand]: 106/113 looper letters, 117 selfloop transitions, 11 changer transitions 0/172 dead transitions. [2023-11-29 00:50:49,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 172 transitions, 788 flow [2023-11-29 00:50:49,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:50:49,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 00:50:49,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 352 transitions. [2023-11-29 00:50:49,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6230088495575221 [2023-11-29 00:50:49,945 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 352 transitions. [2023-11-29 00:50:49,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 352 transitions. [2023-11-29 00:50:49,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:50:49,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 352 transitions. [2023-11-29 00:50:49,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 70.4) internal successors, (352), 5 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:50:49,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:50:49,948 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:50:49,948 INFO L175 Difference]: Start difference. First operand has 113 places, 101 transitions, 293 flow. Second operand 5 states and 352 transitions. [2023-11-29 00:50:49,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 172 transitions, 788 flow [2023-11-29 00:50:50,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 172 transitions, 765 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:50:50,023 INFO L231 Difference]: Finished difference. Result has 118 places, 106 transitions, 358 flow [2023-11-29 00:50:50,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=358, PETRI_PLACES=118, PETRI_TRANSITIONS=106} [2023-11-29 00:50:50,024 INFO L281 CegarLoopForPetriNet]: 100 programPoint places, 18 predicate places. [2023-11-29 00:50:50,024 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 106 transitions, 358 flow [2023-11-29 00:50:50,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.5) internal successors, (194), 4 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:50:50,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:50:50,025 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:50:50,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 00:50:50,025 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 00:50:50,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:50:50,026 INFO L85 PathProgramCache]: Analyzing trace with hash -549164577, now seen corresponding path program 1 times [2023-11-29 00:50:50,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:50:50,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392155478] [2023-11-29 00:50:50,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:50:50,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:50:50,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:50:50,169 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 00:50:50,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:50:50,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392155478] [2023-11-29 00:50:50,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392155478] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:50:50,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:50:50,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:50:50,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160084236] [2023-11-29 00:50:50,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:50:50,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:50:50,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:50:50,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:50:50,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:50:50,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 113 [2023-11-29 00:50:50,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 106 transitions, 358 flow. Second operand has 6 states, 6 states have (on average 45.833333333333336) internal successors, (275), 6 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:50:50,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:50:50,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 113 [2023-11-29 00:50:50,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:51:03,691 INFO L124 PetriNetUnfolderBase]: 86584/147852 cut-off events. [2023-11-29 00:51:03,692 INFO L125 PetriNetUnfolderBase]: For 73479/76350 co-relation queries the response was YES. [2023-11-29 00:51:04,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 318639 conditions, 147852 events. 86584/147852 cut-off events. For 73479/76350 co-relation queries the response was YES. Maximal size of possible extension queue 3976. Compared 1483383 event pairs, 23092 based on Foata normal form. 3114/142054 useless extension candidates. Maximal degree in co-relation 289251. Up to 77837 conditions per place. [2023-11-29 00:51:04,476 INFO L140 encePairwiseOnDemand]: 102/113 looper letters, 217 selfloop transitions, 25 changer transitions 0/284 dead transitions. [2023-11-29 00:51:04,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 284 transitions, 1406 flow [2023-11-29 00:51:04,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:51:04,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 00:51:04,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 577 transitions. [2023-11-29 00:51:04,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6382743362831859 [2023-11-29 00:51:04,480 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 577 transitions. [2023-11-29 00:51:04,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 577 transitions. [2023-11-29 00:51:04,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:51:04,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 577 transitions. [2023-11-29 00:51:04,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 72.125) internal successors, (577), 8 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:51:04,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 113.0) internal successors, (1017), 9 states have internal predecessors, (1017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:51:04,485 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 113.0) internal successors, (1017), 9 states have internal predecessors, (1017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:51:04,486 INFO L175 Difference]: Start difference. First operand has 118 places, 106 transitions, 358 flow. Second operand 8 states and 577 transitions. [2023-11-29 00:51:04,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 284 transitions, 1406 flow [2023-11-29 00:51:04,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 284 transitions, 1395 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:51:04,952 INFO L231 Difference]: Finished difference. Result has 128 places, 120 transitions, 526 flow [2023-11-29 00:51:04,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=526, PETRI_PLACES=128, PETRI_TRANSITIONS=120} [2023-11-29 00:51:04,953 INFO L281 CegarLoopForPetriNet]: 100 programPoint places, 28 predicate places. [2023-11-29 00:51:04,953 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 120 transitions, 526 flow [2023-11-29 00:51:04,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 45.833333333333336) internal successors, (275), 6 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:51:04,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:51:04,953 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1] [2023-11-29 00:51:04,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 00:51:04,953 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-11-29 00:51:04,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:51:04,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1800338731, now seen corresponding path program 1 times [2023-11-29 00:51:04,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:51:04,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458913708] [2023-11-29 00:51:04,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:51:04,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:51:04,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 00:51:04,967 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 00:51:04,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 00:51:04,983 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 00:51:04,984 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 00:51:04,984 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2023-11-29 00:51:04,984 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2023-11-29 00:51:04,984 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2023-11-29 00:51:04,984 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2023-11-29 00:51:04,985 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2023-11-29 00:51:04,985 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2023-11-29 00:51:04,985 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2023-11-29 00:51:04,985 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2023-11-29 00:51:04,985 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 19 remaining) [2023-11-29 00:51:04,986 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 19 remaining) [2023-11-29 00:51:04,986 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 19 remaining) [2023-11-29 00:51:04,986 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 19 remaining) [2023-11-29 00:51:04,986 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 19 remaining) [2023-11-29 00:51:04,986 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2023-11-29 00:51:04,986 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2023-11-29 00:51:04,987 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2023-11-29 00:51:04,987 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2023-11-29 00:51:04,987 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2023-11-29 00:51:04,987 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2023-11-29 00:51:04,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 00:51:04,987 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:51:04,988 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 00:51:04,988 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-29 00:51:05,017 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 00:51:05,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 128 places, 145 transitions, 318 flow [2023-11-29 00:51:05,034 INFO L124 PetriNetUnfolderBase]: 34/200 cut-off events. [2023-11-29 00:51:05,034 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-29 00:51:05,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 200 events. 34/200 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 727 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 169. Up to 10 conditions per place. [2023-11-29 00:51:05,035 INFO L82 GeneralOperation]: Start removeDead. Operand has 128 places, 145 transitions, 318 flow [2023-11-29 00:51:05,037 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 128 places, 145 transitions, 318 flow [2023-11-29 00:51:05,039 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:51:05,039 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;@51fd4407, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:51:05,039 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2023-11-29 00:51:05,041 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 00:51:05,041 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2023-11-29 00:51:05,041 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 00:51:05,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:51:05,041 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 00:51:05,041 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-11-29 00:51:05,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:51:05,041 INFO L85 PathProgramCache]: Analyzing trace with hash 648995254, now seen corresponding path program 1 times [2023-11-29 00:51:05,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:51:05,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509736169] [2023-11-29 00:51:05,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:51:05,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:51:05,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:51:05,068 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 00:51:05,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:51:05,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509736169] [2023-11-29 00:51:05,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509736169] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:51:05,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:51:05,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:51:05,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271419742] [2023-11-29 00:51:05,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:51:05,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:51:05,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:51:05,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:51:05,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:51:05,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 145 [2023-11-29 00:51:05,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 145 transitions, 318 flow. Second operand has 4 states, 4 states have (on average 61.25) internal successors, (245), 4 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 00:51:05,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:51:05,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 145 [2023-11-29 00:51:05,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand