./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cf1a7837 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_5ead54d6-f663-4257-adc6-6c6022e34b19/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ead54d6-f663-4257-adc6-6c6022e34b19/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ead54d6-f663-4257-adc6-6c6022e34b19/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ead54d6-f663-4257-adc6-6c6022e34b19/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ead54d6-f663-4257-adc6-6c6022e34b19/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ead54d6-f663-4257-adc6-6c6022e34b19/bin/uautomizer-verify-uTZkv6EMXl --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 5bb11505151393f96d52a572beff0352326876d897656a8082ae272a8f39e0b4 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:06:35,594 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:06:35,707 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ead54d6-f663-4257-adc6-6c6022e34b19/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-12 02:06:35,712 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:06:35,713 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:06:35,741 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:06:35,741 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:06:35,742 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:06:35,743 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:06:35,743 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:06:35,744 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:06:35,745 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:06:35,746 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:06:35,749 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:06:35,750 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:06:35,751 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:06:35,752 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:06:35,756 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:06:35,757 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:06:35,757 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:06:35,758 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:06:35,758 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:06:35,760 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-12 02:06:35,761 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:06:35,761 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:06:35,762 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:06:35,762 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:06:35,763 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:06:35,764 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:06:35,764 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:06:35,765 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:06:35,766 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:06:35,766 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:06:35,766 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:06:35,767 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:06:35,767 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:06:35,768 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:06:35,768 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:06:35,768 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:06:35,769 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:06:35,769 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:06:35,770 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_5ead54d6-f663-4257-adc6-6c6022e34b19/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ead54d6-f663-4257-adc6-6c6022e34b19/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5bb11505151393f96d52a572beff0352326876d897656a8082ae272a8f39e0b4 [2023-11-12 02:06:36,038 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:06:36,073 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:06:36,077 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:06:36,078 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:06:36,079 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:06:36,080 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ead54d6-f663-4257-adc6-6c6022e34b19/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c [2023-11-12 02:06:39,304 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:06:39,591 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:06:39,592 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ead54d6-f663-4257-adc6-6c6022e34b19/sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c [2023-11-12 02:06:39,602 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ead54d6-f663-4257-adc6-6c6022e34b19/bin/uautomizer-verify-uTZkv6EMXl/data/66a297fc6/6779ab2dbebd46119b41d28f46cfec6c/FLAG095c4e4ec [2023-11-12 02:06:39,615 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ead54d6-f663-4257-adc6-6c6022e34b19/bin/uautomizer-verify-uTZkv6EMXl/data/66a297fc6/6779ab2dbebd46119b41d28f46cfec6c [2023-11-12 02:06:39,617 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:06:39,619 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:06:39,621 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:06:39,621 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:06:39,627 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:06:39,627 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:06:39" (1/1) ... [2023-11-12 02:06:39,629 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71bd6f21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:39, skipping insertion in model container [2023-11-12 02:06:39,629 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:06:39" (1/1) ... [2023-11-12 02:06:39,657 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:06:39,864 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:06:39,875 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:06:39,909 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:06:39,926 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:06:39,927 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:39 WrapperNode [2023-11-12 02:06:39,927 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:06:39,928 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:06:39,928 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:06:39,928 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:06:39,936 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:39" (1/1) ... [2023-11-12 02:06:39,947 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:39" (1/1) ... [2023-11-12 02:06:39,988 INFO L138 Inliner]: procedures = 26, calls = 50, calls flagged for inlining = 14, calls inlined = 22, statements flattened = 350 [2023-11-12 02:06:39,988 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:06:39,989 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:06:39,989 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:06:39,989 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:06:40,002 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:39" (1/1) ... [2023-11-12 02:06:40,003 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:39" (1/1) ... [2023-11-12 02:06:40,009 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:39" (1/1) ... [2023-11-12 02:06:40,010 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:39" (1/1) ... [2023-11-12 02:06:40,023 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:39" (1/1) ... [2023-11-12 02:06:40,029 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:39" (1/1) ... [2023-11-12 02:06:40,032 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:39" (1/1) ... [2023-11-12 02:06:40,035 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:39" (1/1) ... [2023-11-12 02:06:40,041 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:06:40,042 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:06:40,042 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:06:40,042 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:06:40,043 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:39" (1/1) ... [2023-11-12 02:06:40,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:06:40,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ead54d6-f663-4257-adc6-6c6022e34b19/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:06:40,080 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ead54d6-f663-4257-adc6-6c6022e34b19/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:06:40,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ead54d6-f663-4257-adc6-6c6022e34b19/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:06:40,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:06:40,126 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:06:40,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:06:40,126 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:06:40,126 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-12 02:06:40,126 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-12 02:06:40,126 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-12 02:06:40,127 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-12 02:06:40,127 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-12 02:06:40,127 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-12 02:06:40,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:06:40,127 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 02:06:40,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:06:40,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:06:40,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:06:40,130 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:06:40,282 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:06:40,284 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:06:40,985 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:06:41,002 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:06:41,002 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-12 02:06:41,005 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:06:41 BoogieIcfgContainer [2023-11-12 02:06:41,006 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:06:41,009 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:06:41,009 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:06:41,013 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:06:41,014 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:06:39" (1/3) ... [2023-11-12 02:06:41,015 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@338b665e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:06:41, skipping insertion in model container [2023-11-12 02:06:41,015 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:39" (2/3) ... [2023-11-12 02:06:41,015 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@338b665e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:06:41, skipping insertion in model container [2023-11-12 02:06:41,016 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:06:41" (3/3) ... [2023-11-12 02:06:41,017 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-trans.wvr.c [2023-11-12 02:06:41,027 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:06:41,039 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:06:41,042 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 36 error locations. [2023-11-12 02:06:41,042 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:06:41,265 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-12 02:06:41,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 438 places, 462 transitions, 945 flow [2023-11-12 02:06:41,623 INFO L124 PetriNetUnfolderBase]: 34/459 cut-off events. [2023-11-12 02:06:41,623 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-12 02:06:41,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 472 conditions, 459 events. 34/459 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1064 event pairs, 0 based on Foata normal form. 0/389 useless extension candidates. Maximal degree in co-relation 348. Up to 3 conditions per place. [2023-11-12 02:06:41,647 INFO L82 GeneralOperation]: Start removeDead. Operand has 438 places, 462 transitions, 945 flow [2023-11-12 02:06:41,667 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 412 places, 435 transitions, 885 flow [2023-11-12 02:06:41,673 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:06:41,688 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 412 places, 435 transitions, 885 flow [2023-11-12 02:06:41,692 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 412 places, 435 transitions, 885 flow [2023-11-12 02:06:41,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 412 places, 435 transitions, 885 flow [2023-11-12 02:06:41,821 INFO L124 PetriNetUnfolderBase]: 33/435 cut-off events. [2023-11-12 02:06:41,821 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 02:06:41,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 447 conditions, 435 events. 33/435 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 986 event pairs, 0 based on Foata normal form. 0/366 useless extension candidates. Maximal degree in co-relation 348. Up to 3 conditions per place. [2023-11-12 02:06:41,856 INFO L119 LiptonReduction]: Number of co-enabled transitions 45198 [2023-11-12 02:07:06,916 INFO L134 LiptonReduction]: Checked pairs total: 53651 [2023-11-12 02:07:06,917 INFO L136 LiptonReduction]: Total number of compositions: 544 [2023-11-12 02:07:06,936 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:07:06,944 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;@63c1e92d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:07:06,944 INFO L358 AbstractCegarLoop]: Starting to check reachability of 69 error locations. [2023-11-12 02:07:06,947 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:07:06,947 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-12 02:07:06,948 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:07:06,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:07:06,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-12 02:07:06,949 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-12 02:07:06,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:06,956 INFO L85 PathProgramCache]: Analyzing trace with hash 59852, now seen corresponding path program 1 times [2023-11-12 02:07:06,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:06,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6697657] [2023-11-12 02:07:06,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:06,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:07,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:07,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:07:07,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:07,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6697657] [2023-11-12 02:07:07,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6697657] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:07,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:07,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:07:07,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484538938] [2023-11-12 02:07:07,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:07,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:07:07,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:07,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:07:07,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:07:07,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 421 out of 1006 [2023-11-12 02:07:07,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 70 transitions, 155 flow. Second operand has 3 states, 3 states have (on average 421.6666666666667) internal successors, (1265), 3 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:07,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:07:07,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 421 of 1006 [2023-11-12 02:07:07,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:07:10,174 INFO L124 PetriNetUnfolderBase]: 12039/16786 cut-off events. [2023-11-12 02:07:10,174 INFO L125 PetriNetUnfolderBase]: For 585/585 co-relation queries the response was YES. [2023-11-12 02:07:10,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34095 conditions, 16786 events. 12039/16786 cut-off events. For 585/585 co-relation queries the response was YES. Maximal size of possible extension queue 1070. Compared 97300 event pairs, 10297 based on Foata normal form. 0/6474 useless extension candidates. Maximal degree in co-relation 32046. Up to 16752 conditions per place. [2023-11-12 02:07:10,359 INFO L140 encePairwiseOnDemand]: 987/1006 looper letters, 62 selfloop transitions, 7 changer transitions 0/70 dead transitions. [2023-11-12 02:07:10,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 70 transitions, 293 flow [2023-11-12 02:07:10,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:07:10,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:07:10,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1344 transitions. [2023-11-12 02:07:10,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44532803180914515 [2023-11-12 02:07:10,392 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1344 transitions. [2023-11-12 02:07:10,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1344 transitions. [2023-11-12 02:07:10,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:07:10,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1344 transitions. [2023-11-12 02:07:10,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 448.0) internal successors, (1344), 3 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:10,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1006.0) internal successors, (4024), 4 states have internal predecessors, (4024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:10,425 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1006.0) internal successors, (4024), 4 states have internal predecessors, (4024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:10,427 INFO L175 Difference]: Start difference. First operand has 72 places, 70 transitions, 155 flow. Second operand 3 states and 1344 transitions. [2023-11-12 02:07:10,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 70 transitions, 293 flow [2023-11-12 02:07:10,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 70 transitions, 284 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-12 02:07:10,461 INFO L231 Difference]: Finished difference. Result has 65 places, 70 transitions, 198 flow [2023-11-12 02:07:10,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1006, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=65, PETRI_TRANSITIONS=70} [2023-11-12 02:07:10,469 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -7 predicate places. [2023-11-12 02:07:10,469 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 70 transitions, 198 flow [2023-11-12 02:07:10,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 421.6666666666667) internal successors, (1265), 3 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:10,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:07:10,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:07:10,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:07:10,472 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-12 02:07:10,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:10,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1858066, now seen corresponding path program 1 times [2023-11-12 02:07:10,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:10,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796437965] [2023-11-12 02:07:10,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:10,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:10,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:10,657 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:07:10,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:10,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796437965] [2023-11-12 02:07:10,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796437965] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:07:10,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553589044] [2023-11-12 02:07:10,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:10,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:10,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ead54d6-f663-4257-adc6-6c6022e34b19/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:07:10,674 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ead54d6-f663-4257-adc6-6c6022e34b19/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:07:10,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ead54d6-f663-4257-adc6-6c6022e34b19/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:07:10,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:10,806 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:07:10,811 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:10,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:07:10,848 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:07:10,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:07:10,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553589044] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:07:10,866 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:07:10,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-12 02:07:10,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124497216] [2023-11-12 02:07:10,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:07:10,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:07:10,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:10,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:07:10,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:07:10,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 421 out of 1006 [2023-11-12 02:07:10,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 70 transitions, 198 flow. Second operand has 7 states, 7 states have (on average 422.14285714285717) internal successors, (2955), 7 states have internal predecessors, (2955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:10,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:07:10,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 421 of 1006 [2023-11-12 02:07:10,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:07:13,700 INFO L124 PetriNetUnfolderBase]: 12057/16813 cut-off events. [2023-11-12 02:07:13,700 INFO L125 PetriNetUnfolderBase]: For 130/130 co-relation queries the response was YES. [2023-11-12 02:07:13,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34038 conditions, 16813 events. 12057/16813 cut-off events. For 130/130 co-relation queries the response was YES. Maximal size of possible extension queue 1090. Compared 97215 event pairs, 10297 based on Foata normal form. 0/6493 useless extension candidates. Maximal degree in co-relation 33883. Up to 16752 conditions per place. [2023-11-12 02:07:13,829 INFO L140 encePairwiseOnDemand]: 993/1006 looper letters, 59 selfloop transitions, 37 changer transitions 0/97 dead transitions. [2023-11-12 02:07:13,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 97 transitions, 510 flow [2023-11-12 02:07:13,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:07:13,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:07:13,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3052 transitions. [2023-11-12 02:07:13,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43339960238568587 [2023-11-12 02:07:13,846 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3052 transitions. [2023-11-12 02:07:13,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3052 transitions. [2023-11-12 02:07:13,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:07:13,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3052 transitions. [2023-11-12 02:07:13,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 436.0) internal successors, (3052), 7 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:13,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1006.0) internal successors, (8048), 8 states have internal predecessors, (8048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:13,897 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1006.0) internal successors, (8048), 8 states have internal predecessors, (8048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:13,898 INFO L175 Difference]: Start difference. First operand has 65 places, 70 transitions, 198 flow. Second operand 7 states and 3052 transitions. [2023-11-12 02:07:13,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 97 transitions, 510 flow [2023-11-12 02:07:13,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 97 transitions, 484 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:07:13,905 INFO L231 Difference]: Finished difference. Result has 72 places, 97 transitions, 428 flow [2023-11-12 02:07:13,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1006, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=428, PETRI_PLACES=72, PETRI_TRANSITIONS=97} [2023-11-12 02:07:13,907 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 0 predicate places. [2023-11-12 02:07:13,907 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 97 transitions, 428 flow [2023-11-12 02:07:13,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 422.14285714285717) internal successors, (2955), 7 states have internal predecessors, (2955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:13,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:07:13,911 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-11-12 02:07:13,925 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ead54d6-f663-4257-adc6-6c6022e34b19/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:14,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ead54d6-f663-4257-adc6-6c6022e34b19/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:14,121 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-12 02:07:14,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:14,122 INFO L85 PathProgramCache]: Analyzing trace with hash 57601804, now seen corresponding path program 1 times [2023-11-12 02:07:14,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:14,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043712797] [2023-11-12 02:07:14,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:14,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:14,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:14,290 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:07:14,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:14,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043712797] [2023-11-12 02:07:14,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043712797] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:07:14,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180062014] [2023-11-12 02:07:14,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:14,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:14,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ead54d6-f663-4257-adc6-6c6022e34b19/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:07:14,298 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ead54d6-f663-4257-adc6-6c6022e34b19/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:07:14,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ead54d6-f663-4257-adc6-6c6022e34b19/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:07:14,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:14,427 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 02:07:14,429 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:14,446 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:07:14,447 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:07:14,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180062014] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:14,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:07:14,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-12 02:07:14,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048118639] [2023-11-12 02:07:14,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:14,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:07:14,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:14,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:07:14,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:07:14,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 421 out of 1006 [2023-11-12 02:07:14,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 97 transitions, 428 flow. Second operand has 5 states, 5 states have (on average 421.8) internal successors, (2109), 5 states have internal predecessors, (2109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:14,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:07:14,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 421 of 1006 [2023-11-12 02:07:14,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:07:16,902 INFO L124 PetriNetUnfolderBase]: 12048/16801 cut-off events. [2023-11-12 02:07:16,902 INFO L125 PetriNetUnfolderBase]: For 135/135 co-relation queries the response was YES. [2023-11-12 02:07:16,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34048 conditions, 16801 events. 12048/16801 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 1090. Compared 97266 event pairs, 10297 based on Foata normal form. 0/6495 useless extension candidates. Maximal degree in co-relation 33954. Up to 16743 conditions per place. [2023-11-12 02:07:17,020 INFO L140 encePairwiseOnDemand]: 996/1006 looper letters, 64 selfloop transitions, 20 changer transitions 0/85 dead transitions. [2023-11-12 02:07:17,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 85 transitions, 515 flow [2023-11-12 02:07:17,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:07:17,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:07:17,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2183 transitions. [2023-11-12 02:07:17,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43399602385685887 [2023-11-12 02:07:17,031 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2183 transitions. [2023-11-12 02:07:17,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2183 transitions. [2023-11-12 02:07:17,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:07:17,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2183 transitions. [2023-11-12 02:07:17,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 436.6) internal successors, (2183), 5 states have internal predecessors, (2183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:17,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1006.0) internal successors, (6036), 6 states have internal predecessors, (6036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:17,057 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1006.0) internal successors, (6036), 6 states have internal predecessors, (6036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:17,057 INFO L175 Difference]: Start difference. First operand has 72 places, 97 transitions, 428 flow. Second operand 5 states and 2183 transitions. [2023-11-12 02:07:17,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 85 transitions, 515 flow [2023-11-12 02:07:17,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 85 transitions, 478 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-11-12 02:07:17,065 INFO L231 Difference]: Finished difference. Result has 71 places, 85 transitions, 350 flow [2023-11-12 02:07:17,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1006, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=350, PETRI_PLACES=71, PETRI_TRANSITIONS=85} [2023-11-12 02:07:17,067 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -1 predicate places. [2023-11-12 02:07:17,067 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 85 transitions, 350 flow [2023-11-12 02:07:17,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 421.8) internal successors, (2109), 5 states have internal predecessors, (2109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:17,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:07:17,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-12 02:07:17,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ead54d6-f663-4257-adc6-6c6022e34b19/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 02:07:17,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ead54d6-f663-4257-adc6-6c6022e34b19/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-12 02:07:17,276 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-12 02:07:17,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:17,277 INFO L85 PathProgramCache]: Analyzing trace with hash -405662250, now seen corresponding path program 1 times [2023-11-12 02:07:17,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:17,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929980722] [2023-11-12 02:07:17,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:17,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:17,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:17,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:07:17,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:17,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929980722] [2023-11-12 02:07:17,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929980722] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:17,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:17,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:07:17,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508767747] [2023-11-12 02:07:17,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:17,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:07:17,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:17,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:07:17,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:07:17,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 411 out of 1006 [2023-11-12 02:07:17,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 85 transitions, 350 flow. Second operand has 5 states, 5 states have (on average 412.2) internal successors, (2061), 5 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:17,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:07:17,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 411 of 1006 [2023-11-12 02:07:17,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:07:19,911 INFO L124 PetriNetUnfolderBase]: 11255/15691 cut-off events. [2023-11-12 02:07:19,911 INFO L125 PetriNetUnfolderBase]: For 146/146 co-relation queries the response was YES. [2023-11-12 02:07:19,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31804 conditions, 15691 events. 11255/15691 cut-off events. For 146/146 co-relation queries the response was YES. Maximal size of possible extension queue 1022. Compared 89909 event pairs, 9578 based on Foata normal form. 0/6183 useless extension candidates. Maximal degree in co-relation 31714. Up to 15653 conditions per place. [2023-11-12 02:07:20,008 INFO L140 encePairwiseOnDemand]: 998/1006 looper letters, 70 selfloop transitions, 13 changer transitions 0/84 dead transitions. [2023-11-12 02:07:20,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 84 transitions, 514 flow [2023-11-12 02:07:20,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:07:20,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:07:20,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1710 transitions. [2023-11-12 02:07:20,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4249502982107356 [2023-11-12 02:07:20,016 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1710 transitions. [2023-11-12 02:07:20,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1710 transitions. [2023-11-12 02:07:20,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:07:20,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1710 transitions. [2023-11-12 02:07:20,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 427.5) internal successors, (1710), 4 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:20,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1006.0) internal successors, (5030), 5 states have internal predecessors, (5030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:20,038 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1006.0) internal successors, (5030), 5 states have internal predecessors, (5030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:20,038 INFO L175 Difference]: Start difference. First operand has 71 places, 85 transitions, 350 flow. Second operand 4 states and 1710 transitions. [2023-11-12 02:07:20,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 84 transitions, 514 flow [2023-11-12 02:07:20,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 84 transitions, 486 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-12 02:07:20,045 INFO L231 Difference]: Finished difference. Result has 70 places, 84 transitions, 346 flow [2023-11-12 02:07:20,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1006, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=346, PETRI_PLACES=70, PETRI_TRANSITIONS=84} [2023-11-12 02:07:20,049 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -2 predicate places. [2023-11-12 02:07:20,049 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 84 transitions, 346 flow [2023-11-12 02:07:20,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 412.2) internal successors, (2061), 5 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:20,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:07:20,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-12 02:07:20,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:07:20,051 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-12 02:07:20,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:20,052 INFO L85 PathProgramCache]: Analyzing trace with hash -405662072, now seen corresponding path program 1 times [2023-11-12 02:07:20,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:20,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043540628] [2023-11-12 02:07:20,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:20,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:20,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:20,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:07:20,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:20,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043540628] [2023-11-12 02:07:20,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043540628] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:20,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:07:20,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:07:20,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535546509] [2023-11-12 02:07:20,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:20,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:07:20,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:20,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:07:20,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:07:20,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 415 out of 1006 [2023-11-12 02:07:20,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 84 transitions, 346 flow. Second operand has 4 states, 4 states have (on average 416.5) internal successors, (1666), 4 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:20,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:07:20,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 415 of 1006 [2023-11-12 02:07:20,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:07:24,083 INFO L124 PetriNetUnfolderBase]: 21712/30262 cut-off events. [2023-11-12 02:07:24,084 INFO L125 PetriNetUnfolderBase]: For 301/301 co-relation queries the response was YES. [2023-11-12 02:07:24,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61304 conditions, 30262 events. 21712/30262 cut-off events. For 301/301 co-relation queries the response was YES. Maximal size of possible extension queue 1741. Compared 188283 event pairs, 18437 based on Foata normal form. 0/12086 useless extension candidates. Maximal degree in co-relation 61163. Up to 15663 conditions per place. [2023-11-12 02:07:24,299 INFO L140 encePairwiseOnDemand]: 999/1006 looper letters, 149 selfloop transitions, 6 changer transitions 0/156 dead transitions. [2023-11-12 02:07:24,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 156 transitions, 926 flow [2023-11-12 02:07:24,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:07:24,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:07:24,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2195 transitions. [2023-11-12 02:07:24,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4363817097415507 [2023-11-12 02:07:24,310 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2195 transitions. [2023-11-12 02:07:24,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2195 transitions. [2023-11-12 02:07:24,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:07:24,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2195 transitions. [2023-11-12 02:07:24,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 439.0) internal successors, (2195), 5 states have internal predecessors, (2195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:24,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1006.0) internal successors, (6036), 6 states have internal predecessors, (6036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:24,336 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1006.0) internal successors, (6036), 6 states have internal predecessors, (6036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:24,336 INFO L175 Difference]: Start difference. First operand has 70 places, 84 transitions, 346 flow. Second operand 5 states and 2195 transitions. [2023-11-12 02:07:24,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 156 transitions, 926 flow [2023-11-12 02:07:24,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 156 transitions, 882 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-12 02:07:24,345 INFO L231 Difference]: Finished difference. Result has 73 places, 87 transitions, 364 flow [2023-11-12 02:07:24,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1006, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=364, PETRI_PLACES=73, PETRI_TRANSITIONS=87} [2023-11-12 02:07:24,349 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 1 predicate places. [2023-11-12 02:07:24,350 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 87 transitions, 364 flow [2023-11-12 02:07:24,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 416.5) internal successors, (1666), 4 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:24,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:07:24,365 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-12 02:07:24,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:07:24,365 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-12 02:07:24,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:07:24,366 INFO L85 PathProgramCache]: Analyzing trace with hash -479157144, now seen corresponding path program 2 times [2023-11-12 02:07:24,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:07:24,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909551984] [2023-11-12 02:07:24,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:07:24,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:07:24,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:07:24,637 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:07:24,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:07:24,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909551984] [2023-11-12 02:07:24,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909551984] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:07:24,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277982082] [2023-11-12 02:07:24,638 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 02:07:24,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:07:24,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ead54d6-f663-4257-adc6-6c6022e34b19/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:07:24,639 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ead54d6-f663-4257-adc6-6c6022e34b19/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:07:24,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ead54d6-f663-4257-adc6-6c6022e34b19/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 02:07:24,756 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-12 02:07:24,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:07:24,757 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 02:07:24,759 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:07:24,779 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-12 02:07:24,780 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:07:24,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277982082] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:07:24,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:07:24,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-12 02:07:24,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453689846] [2023-11-12 02:07:24,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:07:24,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:07:24,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:07:24,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:07:24,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:07:24,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 427 out of 1006 [2023-11-12 02:07:24,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 87 transitions, 364 flow. Second operand has 3 states, 3 states have (on average 428.0) internal successors, (1284), 3 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:07:24,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:07:24,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 427 of 1006 [2023-11-12 02:07:24,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand