./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6316dbde-a907-45d8-a97e-590559af4261/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6316dbde-a907-45d8-a97e-590559af4261/bin/uautomizer-verify-zZY32mL2XJ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6316dbde-a907-45d8-a97e-590559af4261/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6316dbde-a907-45d8-a97e-590559af4261/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6316dbde-a907-45d8-a97e-590559af4261/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6316dbde-a907-45d8-a97e-590559af4261/bin/uautomizer-verify-zZY32mL2XJ --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 ec2334e7e9ec2636c6abf161aed91fff94fbff3709d38c7edad92256c3b5dc81 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 22:35:56,477 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 22:35:56,555 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6316dbde-a907-45d8-a97e-590559af4261/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-23 22:35:56,560 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 22:35:56,561 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 22:35:56,586 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 22:35:56,587 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 22:35:56,587 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 22:35:56,588 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 22:35:56,589 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 22:35:56,589 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 22:35:56,590 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 22:35:56,591 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 22:35:56,591 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 22:35:56,592 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 22:35:56,592 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 22:35:56,593 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 22:35:56,593 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 22:35:56,594 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 22:35:56,594 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 22:35:56,595 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 22:35:56,596 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 22:35:56,596 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 22:35:56,596 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 22:35:56,597 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 22:35:56,597 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 22:35:56,598 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 22:35:56,598 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 22:35:56,598 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 22:35:56,599 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 22:35:56,599 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 22:35:56,600 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 22:35:56,600 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 22:35:56,600 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:35:56,600 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 22:35:56,601 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 22:35:56,601 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 22:35:56,601 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 22:35:56,601 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 22:35:56,601 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 22:35:56,602 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 22:35:56,602 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 22:35:56,602 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 22:35:56,602 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 22:35:56,603 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_6316dbde-a907-45d8-a97e-590559af4261/bin/uautomizer-verify-zZY32mL2XJ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6316dbde-a907-45d8-a97e-590559af4261/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ec2334e7e9ec2636c6abf161aed91fff94fbff3709d38c7edad92256c3b5dc81 [2023-11-23 22:35:56,904 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 22:35:56,937 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 22:35:56,940 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 22:35:56,941 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 22:35:56,942 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 22:35:56,943 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6316dbde-a907-45d8-a97e-590559af4261/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c [2023-11-23 22:36:00,090 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 22:36:00,287 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 22:36:00,288 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6316dbde-a907-45d8-a97e-590559af4261/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c [2023-11-23 22:36:00,298 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6316dbde-a907-45d8-a97e-590559af4261/bin/uautomizer-verify-zZY32mL2XJ/data/5cc18e532/f0d83e1b9fed4484a266bae7852b7470/FLAGf358855a4 [2023-11-23 22:36:00,312 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6316dbde-a907-45d8-a97e-590559af4261/bin/uautomizer-verify-zZY32mL2XJ/data/5cc18e532/f0d83e1b9fed4484a266bae7852b7470 [2023-11-23 22:36:00,314 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 22:36:00,316 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 22:36:00,317 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 22:36:00,318 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 22:36:00,323 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 22:36:00,323 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:36:00" (1/1) ... [2023-11-23 22:36:00,324 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f43f019 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:36:00, skipping insertion in model container [2023-11-23 22:36:00,324 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:36:00" (1/1) ... [2023-11-23 22:36:00,355 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 22:36:00,594 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:36:00,609 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 22:36:00,650 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:36:00,660 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:36:00,660 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:36:00,668 INFO L206 MainTranslator]: Completed translation [2023-11-23 22:36:00,669 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:36:00 WrapperNode [2023-11-23 22:36:00,669 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 22:36:00,670 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 22:36:00,670 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 22:36:00,670 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 22:36:00,678 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:36:00" (1/1) ... [2023-11-23 22:36:00,690 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:36:00" (1/1) ... [2023-11-23 22:36:00,740 INFO L138 Inliner]: procedures = 26, calls = 94, calls flagged for inlining = 28, calls inlined = 34, statements flattened = 515 [2023-11-23 22:36:00,741 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 22:36:00,741 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 22:36:00,742 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 22:36:00,742 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 22:36:00,767 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:36:00" (1/1) ... [2023-11-23 22:36:00,768 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:36:00" (1/1) ... [2023-11-23 22:36:00,783 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:36:00" (1/1) ... [2023-11-23 22:36:00,809 INFO L189 HeapSplitter]: Split 26 memory accesses to 6 slices as follows [2, 2, 2, 2, 2, 16] [2023-11-23 22:36:00,809 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:36:00" (1/1) ... [2023-11-23 22:36:00,810 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:36:00" (1/1) ... [2023-11-23 22:36:00,826 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:36:00" (1/1) ... [2023-11-23 22:36:00,832 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:36:00" (1/1) ... [2023-11-23 22:36:00,836 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:36:00" (1/1) ... [2023-11-23 22:36:00,839 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:36:00" (1/1) ... [2023-11-23 22:36:00,845 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 22:36:00,846 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 22:36:00,846 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 22:36:00,846 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 22:36:00,847 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:36:00" (1/1) ... [2023-11-23 22:36:00,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:36:00,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6316dbde-a907-45d8-a97e-590559af4261/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:36:00,883 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6316dbde-a907-45d8-a97e-590559af4261/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 22:36:00,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6316dbde-a907-45d8-a97e-590559af4261/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 22:36:00,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 22:36:00,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 22:36:00,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 22:36:00,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 22:36:00,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-23 22:36:00,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-23 22:36:00,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-23 22:36:00,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-23 22:36:00,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-23 22:36:00,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-23 22:36:00,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-23 22:36:00,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-23 22:36:00,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-23 22:36:00,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-23 22:36:00,926 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-23 22:36:00,927 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-23 22:36:00,927 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-23 22:36:00,927 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-23 22:36:00,927 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-23 22:36:00,927 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-23 22:36:00,928 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-23 22:36:00,928 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-23 22:36:00,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 22:36:00,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 22:36:00,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 22:36:00,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-23 22:36:00,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-23 22:36:00,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-23 22:36:00,929 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-23 22:36:00,929 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-23 22:36:00,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 22:36:00,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 22:36:00,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 22:36:00,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 22:36:00,931 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-23 22:36:01,086 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 22:36:01,089 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 22:36:01,968 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 22:36:02,704 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 22:36:02,705 INFO L309 CfgBuilder]: Removed 8 assume(true) statements. [2023-11-23 22:36:02,705 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:36:02 BoogieIcfgContainer [2023-11-23 22:36:02,705 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 22:36:02,709 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 22:36:02,710 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 22:36:02,713 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 22:36:02,713 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:36:00" (1/3) ... [2023-11-23 22:36:02,714 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@de29ea9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:36:02, skipping insertion in model container [2023-11-23 22:36:02,714 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:36:00" (2/3) ... [2023-11-23 22:36:02,715 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@de29ea9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:36:02, skipping insertion in model container [2023-11-23 22:36:02,715 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:36:02" (3/3) ... [2023-11-23 22:36:02,716 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-commit-2.wvr.c [2023-11-23 22:36:02,726 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-23 22:36:02,738 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 22:36:02,738 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2023-11-23 22:36:02,738 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-23 22:36:02,903 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-23 22:36:02,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 105 transitions, 238 flow [2023-11-23 22:36:03,049 INFO L124 PetriNetUnfolderBase]: 12/101 cut-off events. [2023-11-23 22:36:03,051 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-23 22:36:03,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118 conditions, 101 events. 12/101 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 332 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 85. Up to 2 conditions per place. [2023-11-23 22:36:03,060 INFO L82 GeneralOperation]: Start removeDead. Operand has 106 places, 105 transitions, 238 flow [2023-11-23 22:36:03,076 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 99 transitions, 219 flow [2023-11-23 22:36:03,098 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 22:36:03,107 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;@7d401f21, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 22:36:03,107 INFO L358 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2023-11-23 22:36:03,113 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-23 22:36:03,113 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-23 22:36:03,113 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-23 22:36:03,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:36:03,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-23 22:36:03,115 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-23 22:36:03,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:36:03,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1485196, now seen corresponding path program 1 times [2023-11-23 22:36:03,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:36:03,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106472052] [2023-11-23 22:36:03,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:36:03,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:36:03,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:36:03,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:36:03,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:36:03,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106472052] [2023-11-23 22:36:03,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106472052] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:36:03,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:36:03,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:36:03,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318959228] [2023-11-23 22:36:03,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:36:03,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:36:03,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:36:03,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:36:03,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:36:03,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 105 [2023-11-23 22:36:03,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 99 transitions, 219 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:36:03,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:36:03,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 105 [2023-11-23 22:36:03,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:36:17,859 INFO L124 PetriNetUnfolderBase]: 74982/98689 cut-off events. [2023-11-23 22:36:17,860 INFO L125 PetriNetUnfolderBase]: For 2584/2584 co-relation queries the response was YES. [2023-11-23 22:36:18,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196400 conditions, 98689 events. 74982/98689 cut-off events. For 2584/2584 co-relation queries the response was YES. Maximal size of possible extension queue 4939. Compared 627021 event pairs, 58534 based on Foata normal form. 16158/76579 useless extension candidates. Maximal degree in co-relation 185872. Up to 94773 conditions per place. [2023-11-23 22:36:18,604 INFO L140 encePairwiseOnDemand]: 68/105 looper letters, 70 selfloop transitions, 13 changer transitions 0/95 dead transitions. [2023-11-23 22:36:18,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 95 transitions, 377 flow [2023-11-23 22:36:18,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 22:36:18,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-23 22:36:18,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 171 transitions. [2023-11-23 22:36:18,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40714285714285714 [2023-11-23 22:36:18,621 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 171 transitions. [2023-11-23 22:36:18,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 171 transitions. [2023-11-23 22:36:18,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:36:18,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 171 transitions. [2023-11-23 22:36:18,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:36:18,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 105.0) internal successors, (525), 5 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:36:18,640 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 105.0) internal successors, (525), 5 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:36:18,642 INFO L175 Difference]: Start difference. First operand has 100 places, 99 transitions, 219 flow. Second operand 4 states and 171 transitions. [2023-11-23 22:36:18,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 95 transitions, 377 flow [2023-11-23 22:36:18,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 95 transitions, 364 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-11-23 22:36:18,777 INFO L231 Difference]: Finished difference. Result has 87 places, 95 transitions, 290 flow [2023-11-23 22:36:18,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=290, PETRI_PLACES=87, PETRI_TRANSITIONS=95} [2023-11-23 22:36:18,785 INFO L281 CegarLoopForPetriNet]: 100 programPoint places, -13 predicate places. [2023-11-23 22:36:18,786 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 95 transitions, 290 flow [2023-11-23 22:36:18,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:36:18,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:36:18,787 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-23 22:36:18,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 22:36:18,787 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-23 22:36:18,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:36:18,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1297294921, now seen corresponding path program 1 times [2023-11-23 22:36:18,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:36:18,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152404844] [2023-11-23 22:36:18,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:36:18,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:36:18,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:36:19,018 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:36:19,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:36:19,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152404844] [2023-11-23 22:36:19,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152404844] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:36:19,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199625069] [2023-11-23 22:36:19,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:36:19,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:36:19,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6316dbde-a907-45d8-a97e-590559af4261/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:36:19,023 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6316dbde-a907-45d8-a97e-590559af4261/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:36:19,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6316dbde-a907-45d8-a97e-590559af4261/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 22:36:19,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:36:19,225 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 22:36:19,230 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:36:19,294 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:36:19,295 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:36:19,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199625069] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:36:19,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 22:36:19,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-23 22:36:19,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171959705] [2023-11-23 22:36:19,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:36:19,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 22:36:19,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:36:19,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 22:36:19,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-23 22:36:19,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 105 [2023-11-23 22:36:19,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 95 transitions, 290 flow. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:36:19,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:36:19,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 105 [2023-11-23 22:36:19,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:36:30,760 INFO L124 PetriNetUnfolderBase]: 74982/98685 cut-off events. [2023-11-23 22:36:30,760 INFO L125 PetriNetUnfolderBase]: For 477/477 co-relation queries the response was YES. [2023-11-23 22:36:30,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195704 conditions, 98685 events. 74982/98685 cut-off events. For 477/477 co-relation queries the response was YES. Maximal size of possible extension queue 5012. Compared 627231 event pairs, 58534 based on Foata normal form. 4/60428 useless extension candidates. Maximal degree in co-relation 195608. Up to 94753 conditions per place. [2023-11-23 22:36:31,339 INFO L140 encePairwiseOnDemand]: 88/105 looper letters, 57 selfloop transitions, 22 changer transitions 0/91 dead transitions. [2023-11-23 22:36:31,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 91 transitions, 432 flow [2023-11-23 22:36:31,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 22:36:31,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-23 22:36:31,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 179 transitions. [2023-11-23 22:36:31,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2841269841269841 [2023-11-23 22:36:31,346 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 179 transitions. [2023-11-23 22:36:31,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 179 transitions. [2023-11-23 22:36:31,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:36:31,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 179 transitions. [2023-11-23 22:36:31,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:36:31,355 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 105.0) internal successors, (735), 7 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:36:31,356 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 105.0) internal successors, (735), 7 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:36:31,356 INFO L175 Difference]: Start difference. First operand has 87 places, 95 transitions, 290 flow. Second operand 6 states and 179 transitions. [2023-11-23 22:36:31,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 91 transitions, 432 flow [2023-11-23 22:36:31,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 91 transitions, 432 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-23 22:36:31,363 INFO L231 Difference]: Finished difference. Result has 88 places, 91 transitions, 318 flow [2023-11-23 22:36:31,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=318, PETRI_PLACES=88, PETRI_TRANSITIONS=91} [2023-11-23 22:36:31,365 INFO L281 CegarLoopForPetriNet]: 100 programPoint places, -12 predicate places. [2023-11-23 22:36:31,365 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 91 transitions, 318 flow [2023-11-23 22:36:31,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:36:31,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:36:31,366 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-23 22:36:31,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6316dbde-a907-45d8-a97e-590559af4261/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 22:36:31,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6316dbde-a907-45d8-a97e-590559af4261/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:36:31,580 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-23 22:36:31,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:36:31,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1561438390, now seen corresponding path program 1 times [2023-11-23 22:36:31,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:36:31,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539952082] [2023-11-23 22:36:31,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:36:31,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:36:31,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:36:31,700 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:36:31,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:36:31,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539952082] [2023-11-23 22:36:31,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539952082] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:36:31,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060550444] [2023-11-23 22:36:31,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:36:31,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:36:31,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6316dbde-a907-45d8-a97e-590559af4261/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:36:31,703 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6316dbde-a907-45d8-a97e-590559af4261/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:36:31,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6316dbde-a907-45d8-a97e-590559af4261/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 22:36:31,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:36:31,862 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 22:36:31,863 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:36:31,892 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:36:31,892 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 22:36:31,938 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:36:31,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060550444] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 22:36:31,938 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 22:36:31,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-23 22:36:31,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645166861] [2023-11-23 22:36:31,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 22:36:31,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 22:36:31,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:36:31,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 22:36:31,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-23 22:36:32,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 105 [2023-11-23 22:36:32,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 91 transitions, 318 flow. Second operand has 12 states, 12 states have (on average 17.083333333333332) internal successors, (205), 12 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:36:32,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:36:32,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 105 [2023-11-23 22:36:32,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand