./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB --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 fbe9f324c9eba6beb8c990e3f85f0b00a68548fe05ffdb4e97bc061354d1cdf2 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 20:11:07,029 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:11:07,109 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-27 20:11:07,124 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:11:07,126 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:11:07,174 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:11:07,176 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:11:07,176 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:11:07,177 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 20:11:07,177 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 20:11:07,178 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 20:11:07,178 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 20:11:07,179 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:11:07,180 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:11:07,180 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:11:07,181 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:11:07,181 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 20:11:07,181 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 20:11:07,181 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 20:11:07,181 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 20:11:07,182 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:11:07,182 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 20:11:07,182 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 20:11:07,182 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 20:11:07,182 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-27 20:11:07,182 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-27 20:11:07,182 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 20:11:07,183 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 20:11:07,183 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:11:07,183 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:11:07,184 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 20:11:07,184 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:11:07,184 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:11:07,184 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:11:07,184 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:11:07,185 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:11:07,185 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:11:07,185 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:11:07,185 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:11:07,185 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:11:07,185 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:11:07,186 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 20:11:07,186 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 20:11:07,186 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 20:11:07,187 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 20:11:07,187 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 20:11:07,187 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 20:11:07,187 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 20:11:07,187 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 20:11:07,187 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 20:11:07,187 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB 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 -> fbe9f324c9eba6beb8c990e3f85f0b00a68548fe05ffdb4e97bc061354d1cdf2 [2024-11-27 20:11:07,601 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:11:07,617 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:11:07,619 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:11:07,621 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:11:07,621 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:11:07,623 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c [2024-11-27 20:11:10,967 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB/data/55a2acc37/4f81760b781e4dfaae78300949c65f98/FLAGa3a38ad95 [2024-11-27 20:11:11,367 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:11:11,367 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c [2024-11-27 20:11:11,381 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB/data/55a2acc37/4f81760b781e4dfaae78300949c65f98/FLAGa3a38ad95 [2024-11-27 20:11:11,405 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB/data/55a2acc37/4f81760b781e4dfaae78300949c65f98 [2024-11-27 20:11:11,411 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:11:11,414 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:11:11,416 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:11:11,417 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:11:11,430 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:11:11,431 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:11:11" (1/1) ... [2024-11-27 20:11:11,432 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c03fdc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:11:11, skipping insertion in model container [2024-11-27 20:11:11,432 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:11:11" (1/1) ... [2024-11-27 20:11:11,460 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:11:11,733 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:11:11,744 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 20:11:11,777 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:11:11,801 INFO L204 MainTranslator]: Completed translation [2024-11-27 20:11:11,801 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:11:11 WrapperNode [2024-11-27 20:11:11,802 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:11:11,803 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 20:11:11,803 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 20:11:11,804 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 20:11:11,812 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:11:11" (1/1) ... [2024-11-27 20:11:11,824 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:11:11" (1/1) ... [2024-11-27 20:11:11,878 INFO L138 Inliner]: procedures = 23, calls = 36, calls flagged for inlining = 14, calls inlined = 16, statements flattened = 197 [2024-11-27 20:11:11,882 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 20:11:11,883 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 20:11:11,883 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 20:11:11,883 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 20:11:11,898 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:11:11" (1/1) ... [2024-11-27 20:11:11,898 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:11:11" (1/1) ... [2024-11-27 20:11:11,901 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:11:11" (1/1) ... [2024-11-27 20:11:11,931 INFO L175 MemorySlicer]: Split 14 memory accesses to 2 slices as follows [2, 12]. 86 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-27 20:11:11,931 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:11:11" (1/1) ... [2024-11-27 20:11:11,932 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:11:11" (1/1) ... [2024-11-27 20:11:11,947 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:11:11" (1/1) ... [2024-11-27 20:11:11,948 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:11:11" (1/1) ... [2024-11-27 20:11:11,953 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:11:11" (1/1) ... [2024-11-27 20:11:11,954 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:11:11" (1/1) ... [2024-11-27 20:11:11,956 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:11:11" (1/1) ... [2024-11-27 20:11:11,958 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 20:11:11,959 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 20:11:11,960 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 20:11:11,960 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 20:11:11,961 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:11:11" (1/1) ... [2024-11-27 20:11:11,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:11:11,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:11:12,003 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 20:11:12,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 20:11:12,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 20:11:12,043 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-27 20:11:12,043 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-27 20:11:12,043 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-27 20:11:12,043 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-27 20:11:12,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 20:11:12,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-27 20:11:12,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-27 20:11:12,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-27 20:11:12,044 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-27 20:11:12,044 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-27 20:11:12,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-27 20:11:12,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 20:11:12,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 20:11:12,044 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-27 20:11:12,044 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-27 20:11:12,046 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-27 20:11:12,210 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 20:11:12,213 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 20:11:12,736 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-27 20:11:12,737 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 20:11:13,146 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 20:11:13,148 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-27 20:11:13,150 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:11:13 BoogieIcfgContainer [2024-11-27 20:11:13,150 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 20:11:13,153 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 20:11:13,153 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 20:11:13,161 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 20:11:13,161 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 08:11:11" (1/3) ... [2024-11-27 20:11:13,162 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5191548b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:11:13, skipping insertion in model container [2024-11-27 20:11:13,162 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:11:11" (2/3) ... [2024-11-27 20:11:13,164 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5191548b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:11:13, skipping insertion in model container [2024-11-27 20:11:13,164 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:11:13" (3/3) ... [2024-11-27 20:11:13,166 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-counter-fun.wvr.c [2024-11-27 20:11:13,234 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 20:11:13,236 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-counter-fun.wvr.c that has 3 procedures, 37 locations, 1 initial locations, 4 loop locations, and 8 error locations. [2024-11-27 20:11:13,236 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-27 20:11:13,323 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-27 20:11:13,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 40 transitions, 94 flow [2024-11-27 20:11:13,425 INFO L124 PetriNetUnfolderBase]: 4/38 cut-off events. [2024-11-27 20:11:13,428 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-27 20:11:13,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 38 events. 4/38 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 83 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 26. Up to 2 conditions per place. [2024-11-27 20:11:13,434 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 40 transitions, 94 flow [2024-11-27 20:11:13,439 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 36 transitions, 81 flow [2024-11-27 20:11:13,448 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 20:11:13,469 INFO L333 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, 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;@5a5444dc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 20:11:13,469 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2024-11-27 20:11:13,474 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-27 20:11:13,474 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-27 20:11:13,474 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-27 20:11:13,474 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:11:13,479 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-27 20:11:13,479 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-27 20:11:13,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:11:13,486 INFO L85 PathProgramCache]: Analyzing trace with hash 626674, now seen corresponding path program 1 times [2024-11-27 20:11:13,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:11:13,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981172467] [2024-11-27 20:11:13,496 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:11:13,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:11:13,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:11:13,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:11:13,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:11:13,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981172467] [2024-11-27 20:11:13,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981172467] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:11:13,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:11:13,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:11:13,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072304220] [2024-11-27 20:11:13,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:11:13,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:11:13,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:11:13,967 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:11:13,968 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:11:14,004 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-11-27 20:11:14,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 36 transitions, 81 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2024-11-27 20:11:14,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:11:14,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-11-27 20:11:14,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:11:14,266 INFO L124 PetriNetUnfolderBase]: 65/171 cut-off events. [2024-11-27 20:11:14,266 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-11-27 20:11:14,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 311 conditions, 171 events. 65/171 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 652 event pairs, 42 based on Foata normal form. 2/154 useless extension candidates. Maximal degree in co-relation 245. Up to 118 conditions per place. [2024-11-27 20:11:14,273 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 23 selfloop transitions, 7 changer transitions 0/42 dead transitions. [2024-11-27 20:11:14,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 42 transitions, 153 flow [2024-11-27 20:11:14,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:11:14,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 20:11:14,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 90 transitions. [2024-11-27 20:11:14,293 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-11-27 20:11:14,296 INFO L175 Difference]: Start difference. First operand has 39 places, 36 transitions, 81 flow. Second operand 4 states and 90 transitions. [2024-11-27 20:11:14,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 42 transitions, 153 flow [2024-11-27 20:11:14,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 42 transitions, 148 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-27 20:11:14,306 INFO L231 Difference]: Finished difference. Result has 42 places, 42 transitions, 136 flow [2024-11-27 20:11:14,309 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=136, PETRI_PLACES=42, PETRI_TRANSITIONS=42} [2024-11-27 20:11:14,314 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 3 predicate places. [2024-11-27 20:11:14,314 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 42 transitions, 136 flow [2024-11-27 20:11:14,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2024-11-27 20:11:14,315 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:11:14,315 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-27 20:11:14,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 20:11:14,315 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-27 20:11:14,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:11:14,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1489993014, now seen corresponding path program 1 times [2024-11-27 20:11:14,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:11:14,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062604432] [2024-11-27 20:11:14,317 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:11:14,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:11:14,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:11:14,553 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:11:14,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:11:14,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062604432] [2024-11-27 20:11:14,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062604432] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:11:14,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195983278] [2024-11-27 20:11:14,554 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:11:14,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:11:14,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:11:14,557 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:11:14,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 20:11:14,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:11:14,672 INFO L256 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-27 20:11:14,676 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:11:14,754 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:11:14,755 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:11:14,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195983278] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:11:14,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:11:14,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-27 20:11:14,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801421537] [2024-11-27 20:11:14,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:11:14,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:11:14,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:11:14,757 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:11:14,757 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:11:14,788 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-11-27 20:11:14,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 42 transitions, 136 flow. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 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) [2024-11-27 20:11:14,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:11:14,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-11-27 20:11:14,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:11:15,085 INFO L124 PetriNetUnfolderBase]: 65/169 cut-off events. [2024-11-27 20:11:15,085 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-11-27 20:11:15,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325 conditions, 169 events. 65/169 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 642 event pairs, 42 based on Foata normal form. 2/155 useless extension candidates. Maximal degree in co-relation 275. Up to 108 conditions per place. [2024-11-27 20:11:15,088 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 16 selfloop transitions, 12 changer transitions 0/40 dead transitions. [2024-11-27 20:11:15,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 40 transitions, 184 flow [2024-11-27 20:11:15,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:11:15,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-27 20:11:15,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 114 transitions. [2024-11-27 20:11:15,090 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.475 [2024-11-27 20:11:15,090 INFO L175 Difference]: Start difference. First operand has 42 places, 42 transitions, 136 flow. Second operand 6 states and 114 transitions. [2024-11-27 20:11:15,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 40 transitions, 184 flow [2024-11-27 20:11:15,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 40 transitions, 184 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-27 20:11:15,093 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 152 flow [2024-11-27 20:11:15,094 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=152, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2024-11-27 20:11:15,095 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 6 predicate places. [2024-11-27 20:11:15,095 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 152 flow [2024-11-27 20:11:15,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 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) [2024-11-27 20:11:15,095 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:11:15,095 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-27 20:11:15,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-27 20:11:15,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:11:15,300 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-27 20:11:15,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:11:15,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1054856201, now seen corresponding path program 1 times [2024-11-27 20:11:15,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:11:15,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449928303] [2024-11-27 20:11:15,301 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:11:15,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:11:15,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:11:15,533 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:11:15,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:11:15,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449928303] [2024-11-27 20:11:15,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449928303] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:11:15,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165400536] [2024-11-27 20:11:15,534 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:11:15,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:11:15,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:11:15,537 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:11:15,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 20:11:15,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:11:15,655 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-27 20:11:15,656 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:11:15,703 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:11:15,703 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:11:15,779 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:11:15,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165400536] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:11:15,780 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:11:15,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-27 20:11:15,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438689458] [2024-11-27 20:11:15,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:11:15,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-27 20:11:15,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:11:15,781 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-27 20:11:15,782 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-27 20:11:15,838 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-11-27 20:11:15,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 40 transitions, 152 flow. Second operand has 12 states, 12 states have (on average 15.083333333333334) internal successors, (181), 12 states have internal predecessors, (181), 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) [2024-11-27 20:11:15,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:11:15,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-11-27 20:11:15,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:11:16,171 INFO L124 PetriNetUnfolderBase]: 71/193 cut-off events. [2024-11-27 20:11:16,171 INFO L125 PetriNetUnfolderBase]: For 54/54 co-relation queries the response was YES. [2024-11-27 20:11:16,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 419 conditions, 193 events. 71/193 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 780 event pairs, 42 based on Foata normal form. 6/182 useless extension candidates. Maximal degree in co-relation 277. Up to 119 conditions per place. [2024-11-27 20:11:16,177 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 21 selfloop transitions, 25 changer transitions 0/58 dead transitions. [2024-11-27 20:11:16,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 58 transitions, 358 flow [2024-11-27 20:11:16,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 20:11:16,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-27 20:11:16,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 192 transitions. [2024-11-27 20:11:16,180 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48 [2024-11-27 20:11:16,180 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 152 flow. Second operand 10 states and 192 transitions. [2024-11-27 20:11:16,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 58 transitions, 358 flow [2024-11-27 20:11:16,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 58 transitions, 300 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-11-27 20:11:16,186 INFO L231 Difference]: Finished difference. Result has 52 places, 58 transitions, 292 flow [2024-11-27 20:11:16,186 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=292, PETRI_PLACES=52, PETRI_TRANSITIONS=58} [2024-11-27 20:11:16,187 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 13 predicate places. [2024-11-27 20:11:16,187 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 58 transitions, 292 flow [2024-11-27 20:11:16,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 15.083333333333334) internal successors, (181), 12 states have internal predecessors, (181), 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) [2024-11-27 20:11:16,187 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:11:16,187 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:11:16,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-27 20:11:16,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:11:16,388 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-27 20:11:16,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:11:16,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1587200085, now seen corresponding path program 1 times [2024-11-27 20:11:16,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:11:16,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557786301] [2024-11-27 20:11:16,390 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:11:16,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:11:16,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:11:16,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:11:16,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:11:16,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557786301] [2024-11-27 20:11:16,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557786301] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:11:16,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:11:16,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:11:16,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493324610] [2024-11-27 20:11:16,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:11:16,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:11:16,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:11:16,583 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:11:16,583 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:11:16,604 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-11-27 20:11:16,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 58 transitions, 292 flow. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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) [2024-11-27 20:11:16,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:11:16,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-11-27 20:11:16,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:11:16,818 INFO L124 PetriNetUnfolderBase]: 165/373 cut-off events. [2024-11-27 20:11:16,818 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2024-11-27 20:11:16,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 776 conditions, 373 events. 165/373 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1644 event pairs, 78 based on Foata normal form. 10/359 useless extension candidates. Maximal degree in co-relation 709. Up to 219 conditions per place. [2024-11-27 20:11:16,823 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 61 selfloop transitions, 4 changer transitions 0/76 dead transitions. [2024-11-27 20:11:16,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 76 transitions, 462 flow [2024-11-27 20:11:16,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:11:16,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 20:11:16,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 103 transitions. [2024-11-27 20:11:16,825 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.64375 [2024-11-27 20:11:16,825 INFO L175 Difference]: Start difference. First operand has 52 places, 58 transitions, 292 flow. Second operand 4 states and 103 transitions. [2024-11-27 20:11:16,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 76 transitions, 462 flow [2024-11-27 20:11:16,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 76 transitions, 438 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-11-27 20:11:16,831 INFO L231 Difference]: Finished difference. Result has 55 places, 61 transitions, 297 flow [2024-11-27 20:11:16,832 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=297, PETRI_PLACES=55, PETRI_TRANSITIONS=61} [2024-11-27 20:11:16,832 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 16 predicate places. [2024-11-27 20:11:16,833 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 61 transitions, 297 flow [2024-11-27 20:11:16,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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) [2024-11-27 20:11:16,833 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:11:16,833 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:11:16,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 20:11:16,833 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-27 20:11:16,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:11:16,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1566813181, now seen corresponding path program 1 times [2024-11-27 20:11:16,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:11:16,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040167432] [2024-11-27 20:11:16,834 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:11:16,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:11:16,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:11:16,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:11:16,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:11:16,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040167432] [2024-11-27 20:11:16,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040167432] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:11:16,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:11:16,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:11:16,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122270700] [2024-11-27 20:11:16,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:11:16,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:11:16,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:11:16,940 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:11:16,940 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:11:16,957 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-11-27 20:11:16,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 61 transitions, 297 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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) [2024-11-27 20:11:16,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:11:16,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-11-27 20:11:16,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:11:17,195 INFO L124 PetriNetUnfolderBase]: 248/482 cut-off events. [2024-11-27 20:11:17,195 INFO L125 PetriNetUnfolderBase]: For 209/264 co-relation queries the response was YES. [2024-11-27 20:11:17,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1147 conditions, 482 events. 248/482 cut-off events. For 209/264 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2002 event pairs, 117 based on Foata normal form. 32/493 useless extension candidates. Maximal degree in co-relation 1080. Up to 310 conditions per place. [2024-11-27 20:11:17,202 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 65 selfloop transitions, 4 changer transitions 0/81 dead transitions. [2024-11-27 20:11:17,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 81 transitions, 503 flow [2024-11-27 20:11:17,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:11:17,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 20:11:17,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 101 transitions. [2024-11-27 20:11:17,204 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.63125 [2024-11-27 20:11:17,205 INFO L175 Difference]: Start difference. First operand has 55 places, 61 transitions, 297 flow. Second operand 4 states and 101 transitions. [2024-11-27 20:11:17,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 81 transitions, 503 flow [2024-11-27 20:11:17,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 81 transitions, 494 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 20:11:17,211 INFO L231 Difference]: Finished difference. Result has 59 places, 64 transitions, 323 flow [2024-11-27 20:11:17,211 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=323, PETRI_PLACES=59, PETRI_TRANSITIONS=64} [2024-11-27 20:11:17,212 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 20 predicate places. [2024-11-27 20:11:17,212 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 64 transitions, 323 flow [2024-11-27 20:11:17,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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) [2024-11-27 20:11:17,213 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:11:17,213 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:11:17,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 20:11:17,213 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-27 20:11:17,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:11:17,214 INFO L85 PathProgramCache]: Analyzing trace with hash 166935478, now seen corresponding path program 1 times [2024-11-27 20:11:17,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:11:17,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555369602] [2024-11-27 20:11:17,215 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:11:17,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:11:17,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:11:17,430 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 20:11:17,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:11:17,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555369602] [2024-11-27 20:11:17,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555369602] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:11:17,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:11:17,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:11:17,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078437834] [2024-11-27 20:11:17,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:11:17,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:11:17,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:11:17,432 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:11:17,432 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:11:17,432 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 40 [2024-11-27 20:11:17,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 64 transitions, 323 flow. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 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) [2024-11-27 20:11:17,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:11:17,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 40 [2024-11-27 20:11:17,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:11:17,652 INFO L124 PetriNetUnfolderBase]: 190/477 cut-off events. [2024-11-27 20:11:17,652 INFO L125 PetriNetUnfolderBase]: For 247/272 co-relation queries the response was YES. [2024-11-27 20:11:17,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1221 conditions, 477 events. 190/477 cut-off events. For 247/272 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2179 event pairs, 122 based on Foata normal form. 23/489 useless extension candidates. Maximal degree in co-relation 1124. Up to 273 conditions per place. [2024-11-27 20:11:17,656 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 54 selfloop transitions, 4 changer transitions 14/88 dead transitions. [2024-11-27 20:11:17,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 88 transitions, 592 flow [2024-11-27 20:11:17,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:11:17,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 20:11:17,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 130 transitions. [2024-11-27 20:11:17,658 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-11-27 20:11:17,658 INFO L175 Difference]: Start difference. First operand has 59 places, 64 transitions, 323 flow. Second operand 5 states and 130 transitions. [2024-11-27 20:11:17,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 88 transitions, 592 flow [2024-11-27 20:11:17,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 88 transitions, 587 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 20:11:17,667 INFO L231 Difference]: Finished difference. Result has 64 places, 65 transitions, 346 flow [2024-11-27 20:11:17,667 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=346, PETRI_PLACES=64, PETRI_TRANSITIONS=65} [2024-11-27 20:11:17,668 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 25 predicate places. [2024-11-27 20:11:17,668 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 65 transitions, 346 flow [2024-11-27 20:11:17,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 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) [2024-11-27 20:11:17,668 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:11:17,668 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-27 20:11:17,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 20:11:17,669 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-27 20:11:17,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:11:17,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1449370181, now seen corresponding path program 2 times [2024-11-27 20:11:17,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:11:17,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113874392] [2024-11-27 20:11:17,670 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:11:17,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:11:17,696 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 20:11:17,696 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:11:17,761 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-27 20:11:17,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:11:17,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113874392] [2024-11-27 20:11:17,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113874392] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:11:17,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028986034] [2024-11-27 20:11:17,762 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:11:17,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:11:17,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:11:17,768 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:11:17,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 20:11:17,849 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 20:11:17,849 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:11:17,850 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 20:11:17,852 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:11:17,891 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-27 20:11:17,891 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:11:17,933 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-27 20:11:17,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028986034] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:11:17,934 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:11:17,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2024-11-27 20:11:17,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866488652] [2024-11-27 20:11:17,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:11:17,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:11:17,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:11:17,936 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:11:17,936 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:11:17,950 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-11-27 20:11:17,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 65 transitions, 346 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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) [2024-11-27 20:11:17,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:11:17,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-11-27 20:11:17,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:11:18,142 INFO L124 PetriNetUnfolderBase]: 189/475 cut-off events. [2024-11-27 20:11:18,142 INFO L125 PetriNetUnfolderBase]: For 285/310 co-relation queries the response was YES. [2024-11-27 20:11:18,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1245 conditions, 475 events. 189/475 cut-off events. For 285/310 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2264 event pairs, 122 based on Foata normal form. 10/472 useless extension candidates. Maximal degree in co-relation 1149. Up to 330 conditions per place. [2024-11-27 20:11:18,147 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 34 selfloop transitions, 16 changer transitions 0/64 dead transitions. [2024-11-27 20:11:18,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 64 transitions, 436 flow [2024-11-27 20:11:18,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:11:18,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 20:11:18,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 78 transitions. [2024-11-27 20:11:18,149 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4875 [2024-11-27 20:11:18,149 INFO L175 Difference]: Start difference. First operand has 64 places, 65 transitions, 346 flow. Second operand 4 states and 78 transitions. [2024-11-27 20:11:18,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 64 transitions, 436 flow [2024-11-27 20:11:18,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 64 transitions, 432 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-27 20:11:18,157 INFO L231 Difference]: Finished difference. Result has 65 places, 64 transitions, 364 flow [2024-11-27 20:11:18,157 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=364, PETRI_PLACES=65, PETRI_TRANSITIONS=64} [2024-11-27 20:11:18,158 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 26 predicate places. [2024-11-27 20:11:18,158 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 64 transitions, 364 flow [2024-11-27 20:11:18,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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) [2024-11-27 20:11:18,158 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:11:18,158 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:11:18,169 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-27 20:11:18,363 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-27 20:11:18,363 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-27 20:11:18,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:11:18,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1968643058, now seen corresponding path program 1 times [2024-11-27 20:11:18,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:11:18,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528469072] [2024-11-27 20:11:18,364 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:11:18,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:11:18,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:11:18,520 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:11:18,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:11:18,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528469072] [2024-11-27 20:11:18,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528469072] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:11:18,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435231484] [2024-11-27 20:11:18,521 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:11:18,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:11:18,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:11:18,525 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:11:18,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 20:11:18,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:11:18,630 INFO L256 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-27 20:11:18,631 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:11:18,683 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:11:18,683 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:11:18,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435231484] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:11:18,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:11:18,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-27 20:11:18,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115960903] [2024-11-27 20:11:18,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:11:18,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:11:18,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:11:18,685 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:11:18,685 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:11:18,703 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-11-27 20:11:18,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 64 transitions, 364 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:11:18,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:11:18,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-11-27 20:11:18,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:11:18,972 INFO L124 PetriNetUnfolderBase]: 255/573 cut-off events. [2024-11-27 20:11:18,972 INFO L125 PetriNetUnfolderBase]: For 333/355 co-relation queries the response was YES. [2024-11-27 20:11:18,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1527 conditions, 573 events. 255/573 cut-off events. For 333/355 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2733 event pairs, 39 based on Foata normal form. 22/576 useless extension candidates. Maximal degree in co-relation 1428. Up to 164 conditions per place. [2024-11-27 20:11:18,977 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 82 selfloop transitions, 7 changer transitions 0/100 dead transitions. [2024-11-27 20:11:18,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 100 transitions, 670 flow [2024-11-27 20:11:18,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:11:18,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-27 20:11:18,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-11-27 20:11:18,978 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2024-11-27 20:11:18,979 INFO L175 Difference]: Start difference. First operand has 65 places, 64 transitions, 364 flow. Second operand 6 states and 145 transitions. [2024-11-27 20:11:18,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 100 transitions, 670 flow [2024-11-27 20:11:18,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 100 transitions, 629 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-27 20:11:18,984 INFO L231 Difference]: Finished difference. Result has 65 places, 63 transitions, 333 flow [2024-11-27 20:11:18,985 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=333, PETRI_PLACES=65, PETRI_TRANSITIONS=63} [2024-11-27 20:11:18,987 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 26 predicate places. [2024-11-27 20:11:18,987 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 63 transitions, 333 flow [2024-11-27 20:11:18,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:11:18,987 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:11:18,987 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1] [2024-11-27 20:11:18,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-27 20:11:19,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-27 20:11:19,188 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-27 20:11:19,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:11:19,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1193237037, now seen corresponding path program 1 times [2024-11-27 20:11:19,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:11:19,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919046023] [2024-11-27 20:11:19,189 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:11:19,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:11:19,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:11:19,394 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:11:19,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:11:19,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919046023] [2024-11-27 20:11:19,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919046023] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:11:19,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764714015] [2024-11-27 20:11:19,395 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:11:19,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:11:19,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:11:19,397 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:11:19,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 20:11:19,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:11:19,503 INFO L256 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-27 20:11:19,504 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:11:19,581 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:11:19,581 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:11:19,821 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:11:19,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764714015] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:11:19,822 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:11:19,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2024-11-27 20:11:19,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139749341] [2024-11-27 20:11:19,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:11:19,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-27 20:11:19,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:11:19,823 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-27 20:11:19,824 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2024-11-27 20:11:19,904 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-11-27 20:11:19,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 63 transitions, 333 flow. Second operand has 24 states, 24 states have (on average 15.083333333333334) internal successors, (362), 24 states have internal predecessors, (362), 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) [2024-11-27 20:11:19,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:11:19,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-11-27 20:11:19,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:11:20,453 INFO L124 PetriNetUnfolderBase]: 207/545 cut-off events. [2024-11-27 20:11:20,453 INFO L125 PetriNetUnfolderBase]: For 671/678 co-relation queries the response was YES. [2024-11-27 20:11:20,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1558 conditions, 545 events. 207/545 cut-off events. For 671/678 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2562 event pairs, 122 based on Foata normal form. 12/526 useless extension candidates. Maximal degree in co-relation 1229. Up to 326 conditions per place. [2024-11-27 20:11:20,458 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 24 selfloop transitions, 62 changer transitions 0/99 dead transitions. [2024-11-27 20:11:20,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 99 transitions, 733 flow [2024-11-27 20:11:20,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-27 20:11:20,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-27 20:11:20,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 395 transitions. [2024-11-27 20:11:20,461 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44886363636363635 [2024-11-27 20:11:20,461 INFO L175 Difference]: Start difference. First operand has 65 places, 63 transitions, 333 flow. Second operand 22 states and 395 transitions. [2024-11-27 20:11:20,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 99 transitions, 733 flow [2024-11-27 20:11:20,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 99 transitions, 718 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-11-27 20:11:20,467 INFO L231 Difference]: Finished difference. Result has 88 places, 99 transitions, 716 flow [2024-11-27 20:11:20,468 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=716, PETRI_PLACES=88, PETRI_TRANSITIONS=99} [2024-11-27 20:11:20,469 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 49 predicate places. [2024-11-27 20:11:20,469 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 99 transitions, 716 flow [2024-11-27 20:11:20,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 15.083333333333334) internal successors, (362), 24 states have internal predecessors, (362), 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) [2024-11-27 20:11:20,469 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:11:20,470 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:11:20,482 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-27 20:11:20,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:11:20,674 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-27 20:11:20,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:11:20,676 INFO L85 PathProgramCache]: Analyzing trace with hash 898393301, now seen corresponding path program 1 times [2024-11-27 20:11:20,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:11:20,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035452865] [2024-11-27 20:11:20,676 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:11:20,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:11:20,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:11:20,873 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:11:20,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:11:20,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035452865] [2024-11-27 20:11:20,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035452865] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:11:20,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005208897] [2024-11-27 20:11:20,874 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:11:20,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:11:20,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:11:20,877 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:11:20,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 20:11:20,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:11:20,987 INFO L256 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-27 20:11:20,989 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:11:21,046 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:11:21,046 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:11:21,113 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:11:21,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005208897] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:11:21,113 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:11:21,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-27 20:11:21,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235998040] [2024-11-27 20:11:21,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:11:21,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-27 20:11:21,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:11:21,114 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-27 20:11:21,115 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-27 20:11:21,141 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-11-27 20:11:21,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 99 transitions, 716 flow. Second operand has 12 states, 12 states have (on average 17.0) internal successors, (204), 12 states have internal predecessors, (204), 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) [2024-11-27 20:11:21,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:11:21,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-11-27 20:11:21,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:11:21,628 INFO L124 PetriNetUnfolderBase]: 513/1104 cut-off events. [2024-11-27 20:11:21,628 INFO L125 PetriNetUnfolderBase]: For 969/1037 co-relation queries the response was YES. [2024-11-27 20:11:21,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2998 conditions, 1104 events. 513/1104 cut-off events. For 969/1037 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5347 event pairs, 113 based on Foata normal form. 66/1160 useless extension candidates. Maximal degree in co-relation 2870. Up to 418 conditions per place. [2024-11-27 20:11:21,637 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 160 selfloop transitions, 13 changer transitions 0/184 dead transitions. [2024-11-27 20:11:21,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 184 transitions, 1373 flow [2024-11-27 20:11:21,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 20:11:21,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-27 20:11:21,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 247 transitions. [2024-11-27 20:11:21,639 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6175 [2024-11-27 20:11:21,639 INFO L175 Difference]: Start difference. First operand has 88 places, 99 transitions, 716 flow. Second operand 10 states and 247 transitions. [2024-11-27 20:11:21,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 184 transitions, 1373 flow [2024-11-27 20:11:21,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 184 transitions, 1215 flow, removed 47 selfloop flow, removed 9 redundant places. [2024-11-27 20:11:21,650 INFO L231 Difference]: Finished difference. Result has 91 places, 108 transitions, 641 flow [2024-11-27 20:11:21,650 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=558, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=641, PETRI_PLACES=91, PETRI_TRANSITIONS=108} [2024-11-27 20:11:21,651 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 52 predicate places. [2024-11-27 20:11:21,651 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 108 transitions, 641 flow [2024-11-27 20:11:21,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 17.0) internal successors, (204), 12 states have internal predecessors, (204), 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) [2024-11-27 20:11:21,651 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:11:21,651 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:11:21,662 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-27 20:11:21,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-27 20:11:21,852 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-27 20:11:21,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:11:21,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1277372435, now seen corresponding path program 1 times [2024-11-27 20:11:21,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:11:21,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712287605] [2024-11-27 20:11:21,853 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:11:21,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:11:21,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:11:22,018 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-27 20:11:22,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:11:22,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712287605] [2024-11-27 20:11:22,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712287605] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:11:22,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:11:22,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:11:22,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145346413] [2024-11-27 20:11:22,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:11:22,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:11:22,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:11:22,020 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:11:22,020 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:11:22,021 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 40 [2024-11-27 20:11:22,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 108 transitions, 641 flow. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 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) [2024-11-27 20:11:22,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:11:22,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 40 [2024-11-27 20:11:22,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:11:22,325 INFO L124 PetriNetUnfolderBase]: 412/1075 cut-off events. [2024-11-27 20:11:22,325 INFO L125 PetriNetUnfolderBase]: For 1187/1195 co-relation queries the response was YES. [2024-11-27 20:11:22,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3007 conditions, 1075 events. 412/1075 cut-off events. For 1187/1195 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 5608 event pairs, 114 based on Foata normal form. 14/1075 useless extension candidates. Maximal degree in co-relation 2894. Up to 479 conditions per place. [2024-11-27 20:11:22,335 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 84 selfloop transitions, 16 changer transitions 10/127 dead transitions. [2024-11-27 20:11:22,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 127 transitions, 930 flow [2024-11-27 20:11:22,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:11:22,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 20:11:22,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 134 transitions. [2024-11-27 20:11:22,337 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.67 [2024-11-27 20:11:22,337 INFO L175 Difference]: Start difference. First operand has 91 places, 108 transitions, 641 flow. Second operand 5 states and 134 transitions. [2024-11-27 20:11:22,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 127 transitions, 930 flow [2024-11-27 20:11:22,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 127 transitions, 915 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-27 20:11:22,349 INFO L231 Difference]: Finished difference. Result has 95 places, 109 transitions, 688 flow [2024-11-27 20:11:22,350 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=630, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=688, PETRI_PLACES=95, PETRI_TRANSITIONS=109} [2024-11-27 20:11:22,350 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 56 predicate places. [2024-11-27 20:11:22,350 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 109 transitions, 688 flow [2024-11-27 20:11:22,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 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) [2024-11-27 20:11:22,352 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:11:22,353 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:11:22,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-27 20:11:22,353 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-27 20:11:22,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:11:22,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1347153930, now seen corresponding path program 1 times [2024-11-27 20:11:22,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:11:22,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785001898] [2024-11-27 20:11:22,355 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:11:22,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:11:22,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:11:22,557 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 20:11:22,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:11:22,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785001898] [2024-11-27 20:11:22,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785001898] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:11:22,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376519829] [2024-11-27 20:11:22,558 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:11:22,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:11:22,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:11:22,561 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:11:22,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-27 20:11:22,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:11:22,680 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-27 20:11:22,682 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:11:22,724 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 20:11:22,724 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:11:22,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [376519829] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:11:22,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:11:22,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-27 20:11:22,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041728272] [2024-11-27 20:11:22,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:11:22,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:11:22,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:11:22,726 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:11:22,726 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:11:22,744 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-11-27 20:11:22,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 109 transitions, 688 flow. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 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) [2024-11-27 20:11:22,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:11:22,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-11-27 20:11:22,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:11:23,119 INFO L124 PetriNetUnfolderBase]: 525/1086 cut-off events. [2024-11-27 20:11:23,119 INFO L125 PetriNetUnfolderBase]: For 1784/1801 co-relation queries the response was YES. [2024-11-27 20:11:23,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3483 conditions, 1086 events. 525/1086 cut-off events. For 1784/1801 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 5151 event pairs, 93 based on Foata normal form. 25/1069 useless extension candidates. Maximal degree in co-relation 3365. Up to 347 conditions per place. [2024-11-27 20:11:23,130 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 146 selfloop transitions, 7 changer transitions 0/166 dead transitions. [2024-11-27 20:11:23,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 166 transitions, 1309 flow [2024-11-27 20:11:23,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:11:23,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-27 20:11:23,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2024-11-27 20:11:23,132 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5875 [2024-11-27 20:11:23,132 INFO L175 Difference]: Start difference. First operand has 95 places, 109 transitions, 688 flow. Second operand 6 states and 141 transitions. [2024-11-27 20:11:23,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 166 transitions, 1309 flow [2024-11-27 20:11:23,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 166 transitions, 1277 flow, removed 14 selfloop flow, removed 2 redundant places. [2024-11-27 20:11:23,145 INFO L231 Difference]: Finished difference. Result has 96 places, 108 transitions, 687 flow [2024-11-27 20:11:23,145 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=673, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=687, PETRI_PLACES=96, PETRI_TRANSITIONS=108} [2024-11-27 20:11:23,146 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 57 predicate places. [2024-11-27 20:11:23,146 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 108 transitions, 687 flow [2024-11-27 20:11:23,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 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) [2024-11-27 20:11:23,147 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:11:23,147 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:11:23,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-27 20:11:23,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-27 20:11:23,351 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-27 20:11:23,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:11:23,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1187900474, now seen corresponding path program 1 times [2024-11-27 20:11:23,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:11:23,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558262665] [2024-11-27 20:11:23,352 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:11:23,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:11:23,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:11:23,514 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 20:11:23,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:11:23,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558262665] [2024-11-27 20:11:23,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558262665] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:11:23,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941816745] [2024-11-27 20:11:23,515 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:11:23,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:11:23,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:11:23,517 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:11:23,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-27 20:11:23,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:11:23,638 INFO L256 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-27 20:11:23,639 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:11:23,678 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 20:11:23,678 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:11:23,736 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 20:11:23,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941816745] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:11:23,737 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:11:23,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-27 20:11:23,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918536017] [2024-11-27 20:11:23,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:11:23,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-27 20:11:23,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:11:23,738 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-27 20:11:23,738 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-27 20:11:23,769 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-11-27 20:11:23,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 108 transitions, 687 flow. Second operand has 12 states, 12 states have (on average 17.333333333333332) internal successors, (208), 12 states have internal predecessors, (208), 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) [2024-11-27 20:11:23,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:11:23,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-11-27 20:11:23,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:11:24,456 INFO L124 PetriNetUnfolderBase]: 1005/1946 cut-off events. [2024-11-27 20:11:24,456 INFO L125 PetriNetUnfolderBase]: For 2625/2678 co-relation queries the response was YES. [2024-11-27 20:11:24,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5940 conditions, 1946 events. 1005/1946 cut-off events. For 2625/2678 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 9830 event pairs, 187 based on Foata normal form. 75/2004 useless extension candidates. Maximal degree in co-relation 5823. Up to 727 conditions per place. [2024-11-27 20:11:24,475 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 208 selfloop transitions, 13 changer transitions 0/234 dead transitions. [2024-11-27 20:11:24,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 234 transitions, 1781 flow [2024-11-27 20:11:24,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 20:11:24,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-27 20:11:24,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 239 transitions. [2024-11-27 20:11:24,477 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5975 [2024-11-27 20:11:24,477 INFO L175 Difference]: Start difference. First operand has 96 places, 108 transitions, 687 flow. Second operand 10 states and 239 transitions. [2024-11-27 20:11:24,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 234 transitions, 1781 flow [2024-11-27 20:11:24,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 234 transitions, 1751 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-11-27 20:11:24,493 INFO L231 Difference]: Finished difference. Result has 104 places, 117 transitions, 755 flow [2024-11-27 20:11:24,493 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=672, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=755, PETRI_PLACES=104, PETRI_TRANSITIONS=117} [2024-11-27 20:11:24,495 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 65 predicate places. [2024-11-27 20:11:24,496 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 117 transitions, 755 flow [2024-11-27 20:11:24,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 17.333333333333332) internal successors, (208), 12 states have internal predecessors, (208), 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) [2024-11-27 20:11:24,496 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:11:24,496 INFO L206 CegarLoopForPetriNet]: trace histogram [11, 11, 10, 1, 1, 1] [2024-11-27 20:11:24,507 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-27 20:11:24,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-27 20:11:24,701 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-27 20:11:24,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:11:24,702 INFO L85 PathProgramCache]: Analyzing trace with hash -430794509, now seen corresponding path program 2 times [2024-11-27 20:11:24,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:11:24,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532033007] [2024-11-27 20:11:24,702 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:11:24,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:11:24,726 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 20:11:24,726 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:11:24,801 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-27 20:11:24,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:11:24,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532033007] [2024-11-27 20:11:24,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532033007] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:11:24,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826928240] [2024-11-27 20:11:24,802 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:11:24,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:11:24,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:11:24,804 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:11:24,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-27 20:11:24,912 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 20:11:24,912 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:11:24,913 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 20:11:24,915 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:11:24,981 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-27 20:11:24,981 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:11:25,057 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-27 20:11:25,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1826928240] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:11:25,057 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:11:25,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-11-27 20:11:25,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746805887] [2024-11-27 20:11:25,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:11:25,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:11:25,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:11:25,059 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:11:25,059 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:11:25,076 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-11-27 20:11:25,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 117 transitions, 755 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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) [2024-11-27 20:11:25,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:11:25,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-11-27 20:11:25,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:11:25,449 INFO L124 PetriNetUnfolderBase]: 735/1609 cut-off events. [2024-11-27 20:11:25,450 INFO L125 PetriNetUnfolderBase]: For 2554/2598 co-relation queries the response was YES. [2024-11-27 20:11:25,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4906 conditions, 1609 events. 735/1609 cut-off events. For 2554/2598 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 8443 event pairs, 437 based on Foata normal form. 2/1589 useless extension candidates. Maximal degree in co-relation 4809. Up to 1091 conditions per place. [2024-11-27 20:11:25,466 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 41 selfloop transitions, 55 changer transitions 2/116 dead transitions. [2024-11-27 20:11:25,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 116 transitions, 929 flow [2024-11-27 20:11:25,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:11:25,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 20:11:25,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 91 transitions. [2024-11-27 20:11:25,468 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.455 [2024-11-27 20:11:25,468 INFO L175 Difference]: Start difference. First operand has 104 places, 117 transitions, 755 flow. Second operand 5 states and 91 transitions. [2024-11-27 20:11:25,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 116 transitions, 929 flow [2024-11-27 20:11:25,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 116 transitions, 873 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-11-27 20:11:25,481 INFO L231 Difference]: Finished difference. Result has 95 places, 114 transitions, 767 flow [2024-11-27 20:11:25,481 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=677, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=767, PETRI_PLACES=95, PETRI_TRANSITIONS=114} [2024-11-27 20:11:25,482 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 56 predicate places. [2024-11-27 20:11:25,482 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 114 transitions, 767 flow [2024-11-27 20:11:25,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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) [2024-11-27 20:11:25,483 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:11:25,483 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:11:25,494 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-27 20:11:25,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:11:25,687 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-27 20:11:25,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:11:25,688 INFO L85 PathProgramCache]: Analyzing trace with hash 322226053, now seen corresponding path program 1 times [2024-11-27 20:11:25,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:11:25,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924686371] [2024-11-27 20:11:25,689 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:11:25,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:11:25,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:11:26,129 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 20:11:26,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:11:26,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924686371] [2024-11-27 20:11:26,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924686371] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:11:26,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063745131] [2024-11-27 20:11:26,130 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:11:26,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:11:26,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:11:26,133 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:11:26,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-27 20:11:26,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:11:26,280 INFO L256 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-27 20:11:26,282 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:11:26,371 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 20:11:26,371 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:11:26,611 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 20:11:26,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063745131] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:11:26,613 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:11:26,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2024-11-27 20:11:26,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211538606] [2024-11-27 20:11:26,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:11:26,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-27 20:11:26,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:11:26,615 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-27 20:11:26,615 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2024-11-27 20:11:26,671 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-11-27 20:11:26,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 114 transitions, 767 flow. Second operand has 24 states, 24 states have (on average 16.833333333333332) internal successors, (404), 24 states have internal predecessors, (404), 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) [2024-11-27 20:11:26,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:11:26,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-11-27 20:11:26,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:11:28,062 INFO L124 PetriNetUnfolderBase]: 1963/3656 cut-off events. [2024-11-27 20:11:28,062 INFO L125 PetriNetUnfolderBase]: For 6828/7010 co-relation queries the response was YES. [2024-11-27 20:11:28,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11017 conditions, 3656 events. 1963/3656 cut-off events. For 6828/7010 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 19325 event pairs, 143 based on Foata normal form. 156/3796 useless extension candidates. Maximal degree in co-relation 10812. Up to 807 conditions per place. [2024-11-27 20:11:28,097 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 400 selfloop transitions, 31 changer transitions 0/443 dead transitions. [2024-11-27 20:11:28,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 443 transitions, 3289 flow [2024-11-27 20:11:28,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-27 20:11:28,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-27 20:11:28,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 538 transitions. [2024-11-27 20:11:28,101 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6113636363636363 [2024-11-27 20:11:28,101 INFO L175 Difference]: Start difference. First operand has 95 places, 114 transitions, 767 flow. Second operand 22 states and 538 transitions. [2024-11-27 20:11:28,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 443 transitions, 3289 flow [2024-11-27 20:11:28,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 443 transitions, 3181 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-11-27 20:11:28,122 INFO L231 Difference]: Finished difference. Result has 115 places, 132 transitions, 867 flow [2024-11-27 20:11:28,123 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=661, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=867, PETRI_PLACES=115, PETRI_TRANSITIONS=132} [2024-11-27 20:11:28,124 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 76 predicate places. [2024-11-27 20:11:28,124 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 132 transitions, 867 flow [2024-11-27 20:11:28,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 16.833333333333332) internal successors, (404), 24 states have internal predecessors, (404), 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) [2024-11-27 20:11:28,125 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:11:28,125 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:11:28,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-27 20:11:28,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:11:28,330 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-27 20:11:28,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:11:28,331 INFO L85 PathProgramCache]: Analyzing trace with hash 752912614, now seen corresponding path program 2 times [2024-11-27 20:11:28,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:11:28,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559394657] [2024-11-27 20:11:28,331 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:11:28,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:11:28,358 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 20:11:28,358 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:11:28,415 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-27 20:11:28,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:11:28,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559394657] [2024-11-27 20:11:28,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559394657] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:11:28,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956234617] [2024-11-27 20:11:28,415 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:11:28,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:11:28,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:11:28,418 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:11:28,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-27 20:11:28,548 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 20:11:28,548 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:11:28,549 INFO L256 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 20:11:28,551 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:11:28,632 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-27 20:11:28,633 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:11:28,716 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-27 20:11:28,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956234617] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:11:28,717 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:11:28,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-11-27 20:11:28,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165762028] [2024-11-27 20:11:28,717 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:11:28,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:11:28,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:11:28,718 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:11:28,719 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:11:28,743 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-11-27 20:11:28,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 132 transitions, 867 flow. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 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) [2024-11-27 20:11:28,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:11:28,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-11-27 20:11:28,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:11:29,592 INFO L124 PetriNetUnfolderBase]: 2343/4247 cut-off events. [2024-11-27 20:11:29,592 INFO L125 PetriNetUnfolderBase]: For 10107/10286 co-relation queries the response was YES. [2024-11-27 20:11:29,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14133 conditions, 4247 events. 2343/4247 cut-off events. For 10107/10286 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 22201 event pairs, 477 based on Foata normal form. 49/4161 useless extension candidates. Maximal degree in co-relation 13820. Up to 1575 conditions per place. [2024-11-27 20:11:29,632 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 118 selfloop transitions, 14 changer transitions 36/185 dead transitions. [2024-11-27 20:11:29,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 185 transitions, 1603 flow [2024-11-27 20:11:29,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:11:29,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 20:11:29,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 107 transitions. [2024-11-27 20:11:29,634 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.535 [2024-11-27 20:11:29,634 INFO L175 Difference]: Start difference. First operand has 115 places, 132 transitions, 867 flow. Second operand 5 states and 107 transitions. [2024-11-27 20:11:29,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 185 transitions, 1603 flow [2024-11-27 20:11:29,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 185 transitions, 1397 flow, removed 68 selfloop flow, removed 13 redundant places. [2024-11-27 20:11:29,664 INFO L231 Difference]: Finished difference. Result has 106 places, 120 transitions, 751 flow [2024-11-27 20:11:29,664 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=767, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=751, PETRI_PLACES=106, PETRI_TRANSITIONS=120} [2024-11-27 20:11:29,665 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 67 predicate places. [2024-11-27 20:11:29,665 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 120 transitions, 751 flow [2024-11-27 20:11:29,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 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) [2024-11-27 20:11:29,666 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:11:29,666 INFO L206 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:11:29,678 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-27 20:11:29,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-27 20:11:29,866 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2024-11-27 20:11:29,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:11:29,867 INFO L85 PathProgramCache]: Analyzing trace with hash 315687525, now seen corresponding path program 2 times [2024-11-27 20:11:29,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:11:29,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278592633] [2024-11-27 20:11:29,868 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:11:29,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:11:29,904 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:11:29,907 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:11:30,076 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 2 proven. 40 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2024-11-27 20:11:30,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:11:30,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278592633] [2024-11-27 20:11:30,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278592633] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:11:30,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055542761] [2024-11-27 20:11:30,077 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:11:30,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:11:30,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:11:30,080 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:11:30,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-27 20:11:30,255 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:11:30,255 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:11:30,259 INFO L256 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 20:11:30,261 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:11:30,386 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 2 proven. 40 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2024-11-27 20:11:30,387 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:11:30,522 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 2 proven. 40 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2024-11-27 20:11:30,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055542761] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:11:30,522 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:11:30,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-11-27 20:11:30,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734072186] [2024-11-27 20:11:30,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:11:30,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:11:30,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:11:30,524 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:11:30,524 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:11:30,546 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-11-27 20:11:30,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 120 transitions, 751 flow. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 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) [2024-11-27 20:11:30,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:11:30,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-11-27 20:11:30,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:11:31,260 INFO L124 PetriNetUnfolderBase]: 2094/3983 cut-off events. [2024-11-27 20:11:31,260 INFO L125 PetriNetUnfolderBase]: For 9770/9918 co-relation queries the response was YES. [2024-11-27 20:11:31,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12470 conditions, 3983 events. 2094/3983 cut-off events. For 9770/9918 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 21300 event pairs, 458 based on Foata normal form. 26/3903 useless extension candidates. Maximal degree in co-relation 12159. Up to 1664 conditions per place. [2024-11-27 20:11:31,283 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 0 selfloop transitions, 0 changer transitions 151/151 dead transitions. [2024-11-27 20:11:31,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 151 transitions, 1195 flow [2024-11-27 20:11:31,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:11:31,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 20:11:31,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 106 transitions. [2024-11-27 20:11:31,285 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.53 [2024-11-27 20:11:31,285 INFO L175 Difference]: Start difference. First operand has 106 places, 120 transitions, 751 flow. Second operand 5 states and 106 transitions. [2024-11-27 20:11:31,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 151 transitions, 1195 flow [2024-11-27 20:11:31,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 151 transitions, 1140 flow, removed 1 selfloop flow, removed 13 redundant places. [2024-11-27 20:11:31,304 INFO L231 Difference]: Finished difference. Result has 94 places, 0 transitions, 0 flow [2024-11-27 20:11:31,304 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=688, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=94, PETRI_TRANSITIONS=0} [2024-11-27 20:11:31,305 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 55 predicate places. [2024-11-27 20:11:31,305 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 0 transitions, 0 flow [2024-11-27 20:11:31,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 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) [2024-11-27 20:11:31,308 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 14 remaining) [2024-11-27 20:11:31,311 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 14 remaining) [2024-11-27 20:11:31,312 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 14 remaining) [2024-11-27 20:11:31,312 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 14 remaining) [2024-11-27 20:11:31,312 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 14 remaining) [2024-11-27 20:11:31,312 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 14 remaining) [2024-11-27 20:11:31,312 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 14 remaining) [2024-11-27 20:11:31,313 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 14 remaining) [2024-11-27 20:11:31,313 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 14 remaining) [2024-11-27 20:11:31,313 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 14 remaining) [2024-11-27 20:11:31,313 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 14 remaining) [2024-11-27 20:11:31,313 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 14 remaining) [2024-11-27 20:11:31,313 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 14 remaining) [2024-11-27 20:11:31,313 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 14 remaining) [2024-11-27 20:11:31,325 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-27 20:11:31,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-27 20:11:31,514 INFO L422 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:11:31,519 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-27 20:11:31,520 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-27 20:11:31,529 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 08:11:31 BasicIcfg [2024-11-27 20:11:31,530 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-27 20:11:31,531 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-27 20:11:31,531 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-27 20:11:31,531 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-27 20:11:31,532 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:11:13" (3/4) ... [2024-11-27 20:11:31,534 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-11-27 20:11:31,537 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-27 20:11:31,537 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-27 20:11:31,543 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 114 nodes and edges [2024-11-27 20:11:31,543 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2024-11-27 20:11:31,544 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2024-11-27 20:11:31,544 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-27 20:11:31,656 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-27 20:11:31,656 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-27 20:11:31,656 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-27 20:11:31,659 INFO L158 Benchmark]: Toolchain (without parser) took 20244.47ms. Allocated memory was 142.6MB in the beginning and 436.2MB in the end (delta: 293.6MB). Free memory was 103.4MB in the beginning and 206.8MB in the end (delta: -103.4MB). Peak memory consumption was 189.3MB. Max. memory is 16.1GB. [2024-11-27 20:11:31,659 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 167.8MB. Free memory is still 104.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 20:11:31,660 INFO L158 Benchmark]: CACSL2BoogieTranslator took 386.77ms. Allocated memory is still 142.6MB. Free memory was 103.1MB in the beginning and 91.1MB in the end (delta: 12.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-27 20:11:31,660 INFO L158 Benchmark]: Boogie Procedure Inliner took 79.34ms. Allocated memory is still 142.6MB. Free memory was 91.1MB in the beginning and 89.0MB in the end (delta: 2.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-27 20:11:31,660 INFO L158 Benchmark]: Boogie Preprocessor took 75.56ms. Allocated memory is still 142.6MB. Free memory was 89.0MB in the beginning and 87.0MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 20:11:31,661 INFO L158 Benchmark]: RCFGBuilder took 1191.16ms. Allocated memory is still 142.6MB. Free memory was 87.0MB in the beginning and 33.0MB in the end (delta: 54.0MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2024-11-27 20:11:31,662 INFO L158 Benchmark]: TraceAbstraction took 18377.05ms. Allocated memory was 142.6MB in the beginning and 436.2MB in the end (delta: 293.6MB). Free memory was 32.3MB in the beginning and 214.5MB in the end (delta: -182.2MB). Peak memory consumption was 186.2MB. Max. memory is 16.1GB. [2024-11-27 20:11:31,664 INFO L158 Benchmark]: Witness Printer took 125.62ms. Allocated memory is still 436.2MB. Free memory was 214.5MB in the beginning and 206.8MB in the end (delta: 7.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-27 20:11:31,666 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 167.8MB. Free memory is still 104.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 386.77ms. Allocated memory is still 142.6MB. Free memory was 103.1MB in the beginning and 91.1MB in the end (delta: 12.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 79.34ms. Allocated memory is still 142.6MB. Free memory was 91.1MB in the beginning and 89.0MB in the end (delta: 2.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 75.56ms. Allocated memory is still 142.6MB. Free memory was 89.0MB in the beginning and 87.0MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 1191.16ms. Allocated memory is still 142.6MB. Free memory was 87.0MB in the beginning and 33.0MB in the end (delta: 54.0MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. * TraceAbstraction took 18377.05ms. Allocated memory was 142.6MB in the beginning and 436.2MB in the end (delta: 293.6MB). Free memory was 32.3MB in the beginning and 214.5MB in the end (delta: -182.2MB). Peak memory consumption was 186.2MB. Max. memory is 16.1GB. * Witness Printer took 125.62ms. Allocated memory is still 436.2MB. Free memory was 214.5MB in the beginning and 206.8MB in the end (delta: 7.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 98]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 98]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 98]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 98]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 57 locations, 14 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 18.2s, OverallIterations: 17, TraceHistogramMax: 11, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 8.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1068 SdHoareTripleChecker+Valid, 3.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 984 mSDsluCounter, 216 SdHoareTripleChecker+Invalid, 2.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 192 mSDsCounter, 112 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2557 IncrementalHoareTripleChecker+Invalid, 2669 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 112 mSolverCounterUnsat, 24 mSDtfsCounter, 2557 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 661 GetRequests, 491 SyntacticMatches, 7 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 587 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=867occurred in iteration=15, InterpolantAutomatonStates: 133, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 4.6s InterpolantComputationTime, 658 NumberOfCodeBlocks, 522 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 876 ConstructedInterpolants, 0 QuantifiedInterpolants, 2382 SizeOfPredicates, 38 NumberOfNonLiveVariables, 1708 ConjunctsInSsa, 72 ConjunctsInUnsatCore, 38 InterpolantComputations, 8 PerfectInterpolantSequences, 1366/1907 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-27 20:11:31,693 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b3bc2b7-ba21-4ce5-ac5c-b061a216b7d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE