./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc35851-1314-4a3f-b35a-a959a0b98baa/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc35851-1314-4a3f-b35a-a959a0b98baa/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc35851-1314-4a3f-b35a-a959a0b98baa/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc35851-1314-4a3f-b35a-a959a0b98baa/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc35851-1314-4a3f-b35a-a959a0b98baa/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc35851-1314-4a3f-b35a-a959a0b98baa/bin/uautomizer-verify-VRDe98Ueme --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 dbd0a32f8466e9a1ac86b6dfec2b7453fe6f40d8d953742d93d3d05c5ad7b7af --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:48:35,988 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:48:36,062 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc35851-1314-4a3f-b35a-a959a0b98baa/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-26 10:48:36,068 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:48:36,069 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:48:36,097 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:48:36,098 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:48:36,099 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:48:36,099 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:48:36,100 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:48:36,101 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:48:36,101 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:48:36,102 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:48:36,103 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:48:36,104 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:48:36,105 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:48:36,105 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:48:36,106 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:48:36,107 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:48:36,107 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:48:36,108 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:48:36,109 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:48:36,110 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:48:36,112 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:48:36,113 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 10:48:36,113 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 10:48:36,114 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:48:36,115 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:48:36,115 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:48:36,116 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:48:36,117 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:48:36,117 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:48:36,118 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:48:36,118 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:48:36,119 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:48:36,119 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:48:36,119 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:48:36,120 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:48:36,120 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:48:36,121 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:48:36,121 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:48:36,121 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:48:36,122 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:48:36,122 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:48:36,122 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc35851-1314-4a3f-b35a-a959a0b98baa/bin/uautomizer-verify-VRDe98Ueme/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc35851-1314-4a3f-b35a-a959a0b98baa/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dbd0a32f8466e9a1ac86b6dfec2b7453fe6f40d8d953742d93d3d05c5ad7b7af [2023-11-26 10:48:36,451 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:48:36,479 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:48:36,482 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:48:36,483 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:48:36,483 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:48:36,485 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc35851-1314-4a3f-b35a-a959a0b98baa/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c [2023-11-26 10:48:39,635 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:48:39,838 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:48:39,839 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc35851-1314-4a3f-b35a-a959a0b98baa/sv-benchmarks/c/weaver/popl20-more-min-le-max.wvr.c [2023-11-26 10:48:39,847 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc35851-1314-4a3f-b35a-a959a0b98baa/bin/uautomizer-verify-VRDe98Ueme/data/88af52b65/1cb3777f5f8f436281006ae022747d1e/FLAG285baa521 [2023-11-26 10:48:39,862 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc35851-1314-4a3f-b35a-a959a0b98baa/bin/uautomizer-verify-VRDe98Ueme/data/88af52b65/1cb3777f5f8f436281006ae022747d1e [2023-11-26 10:48:39,864 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:48:39,866 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:48:39,867 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:48:39,867 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:48:39,874 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:48:39,877 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:48:39" (1/1) ... [2023-11-26 10:48:39,878 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e23ac4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:39, skipping insertion in model container [2023-11-26 10:48:39,879 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:48:39" (1/1) ... [2023-11-26 10:48:39,912 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:48:40,103 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:48:40,114 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:48:40,145 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:48:40,154 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:48:40,155 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:48:40,163 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:48:40,164 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:40 WrapperNode [2023-11-26 10:48:40,164 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:48:40,165 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:48:40,166 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:48:40,166 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:48:40,174 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:40" (1/1) ... [2023-11-26 10:48:40,183 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:40" (1/1) ... [2023-11-26 10:48:40,210 INFO L138 Inliner]: procedures = 24, calls = 44, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 110 [2023-11-26 10:48:40,210 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:48:40,211 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:48:40,211 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:48:40,211 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:48:40,223 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:40" (1/1) ... [2023-11-26 10:48:40,223 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:40" (1/1) ... [2023-11-26 10:48:40,228 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:40" (1/1) ... [2023-11-26 10:48:40,245 INFO L175 MemorySlicer]: Split 15 memory accesses to 5 slices as follows [2, 7, 2, 2, 2]. 47 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2023-11-26 10:48:40,245 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:40" (1/1) ... [2023-11-26 10:48:40,246 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:40" (1/1) ... [2023-11-26 10:48:40,254 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:40" (1/1) ... [2023-11-26 10:48:40,258 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:40" (1/1) ... [2023-11-26 10:48:40,260 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:40" (1/1) ... [2023-11-26 10:48:40,262 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:40" (1/1) ... [2023-11-26 10:48:40,266 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:48:40,267 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:48:40,268 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:48:40,268 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:48:40,269 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:40" (1/1) ... [2023-11-26 10:48:40,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:48:40,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc35851-1314-4a3f-b35a-a959a0b98baa/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:48:40,314 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc35851-1314-4a3f-b35a-a959a0b98baa/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:48:40,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc35851-1314-4a3f-b35a-a959a0b98baa/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:48:40,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:48:40,349 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-26 10:48:40,350 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-26 10:48:40,350 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-26 10:48:40,350 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-26 10:48:40,350 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-26 10:48:40,350 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-26 10:48:40,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 10:48:40,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 10:48:40,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 10:48:40,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 10:48:40,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 10:48:40,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 10:48:40,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 10:48:40,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 10:48:40,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 10:48:40,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 10:48:40,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-26 10:48:40,353 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-26 10:48:40,353 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-26 10:48:40,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 10:48:40,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:48:40,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:48:40,354 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 10:48:40,354 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 10:48:40,354 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 10:48:40,354 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-26 10:48:40,354 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-26 10:48:40,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 10:48:40,356 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 10:48:40,509 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:48:40,511 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:48:40,834 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:48:41,174 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:48:41,175 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-26 10:48:41,176 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:48:41 BoogieIcfgContainer [2023-11-26 10:48:41,176 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:48:41,181 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:48:41,182 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:48:41,185 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:48:41,186 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:48:39" (1/3) ... [2023-11-26 10:48:41,186 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@388eea06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:48:41, skipping insertion in model container [2023-11-26 10:48:41,187 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:40" (2/3) ... [2023-11-26 10:48:41,189 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@388eea06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:48:41, skipping insertion in model container [2023-11-26 10:48:41,189 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:48:41" (3/3) ... [2023-11-26 10:48:41,191 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-min-le-max.wvr.c [2023-11-26 10:48:41,200 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 10:48:41,209 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:48:41,209 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-26 10:48:41,209 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 10:48:41,280 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-26 10:48:41,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 43 transitions, 107 flow [2023-11-26 10:48:41,410 INFO L124 PetriNetUnfolderBase]: 3/40 cut-off events. [2023-11-26 10:48:41,410 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-26 10:48:41,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 40 events. 3/40 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 76 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2023-11-26 10:48:41,415 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 43 transitions, 107 flow [2023-11-26 10:48:41,430 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 36 transitions, 84 flow [2023-11-26 10:48:41,449 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:48:41,460 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@561d16ab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:48:41,460 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-26 10:48:41,468 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 10:48:41,469 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-26 10:48:41,469 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 10:48:41,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:48:41,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-26 10:48:41,470 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-26 10:48:41,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:41,479 INFO L85 PathProgramCache]: Analyzing trace with hash 437758, now seen corresponding path program 1 times [2023-11-26 10:48:41,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:41,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690457749] [2023-11-26 10:48:41,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:41,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:41,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:41,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:48:41,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:41,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690457749] [2023-11-26 10:48:41,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690457749] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:48:41,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:48:41,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:48:41,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323086958] [2023-11-26 10:48:41,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:48:41,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:48:41,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:41,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:48:41,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:48:41,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 43 [2023-11-26 10:48:41,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 36 transitions, 84 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:41,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:48:41,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 43 [2023-11-26 10:48:41,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:48:42,168 INFO L124 PetriNetUnfolderBase]: 227/430 cut-off events. [2023-11-26 10:48:42,169 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2023-11-26 10:48:42,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 839 conditions, 430 events. 227/430 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1989 event pairs, 171 based on Foata normal form. 1/379 useless extension candidates. Maximal degree in co-relation 722. Up to 353 conditions per place. [2023-11-26 10:48:42,178 INFO L140 encePairwiseOnDemand]: 37/43 looper letters, 22 selfloop transitions, 4 changer transitions 0/39 dead transitions. [2023-11-26 10:48:42,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 39 transitions, 142 flow [2023-11-26 10:48:42,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:48:42,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 10:48:42,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 92 transitions. [2023-11-26 10:48:42,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5348837209302325 [2023-11-26 10:48:42,193 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 92 transitions. [2023-11-26 10:48:42,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 92 transitions. [2023-11-26 10:48:42,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:48:42,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 92 transitions. [2023-11-26 10:48:42,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:42,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 43.0) internal successors, (215), 5 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:42,206 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 43.0) internal successors, (215), 5 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:42,208 INFO L175 Difference]: Start difference. First operand has 43 places, 36 transitions, 84 flow. Second operand 4 states and 92 transitions. [2023-11-26 10:48:42,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 39 transitions, 142 flow [2023-11-26 10:48:42,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 39 transitions, 136 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-26 10:48:42,220 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 107 flow [2023-11-26 10:48:42,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=107, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2023-11-26 10:48:42,225 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 1 predicate places. [2023-11-26 10:48:42,225 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 107 flow [2023-11-26 10:48:42,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:42,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:48:42,226 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-26 10:48:42,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 10:48:42,227 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-26 10:48:42,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:42,227 INFO L85 PathProgramCache]: Analyzing trace with hash 156777721, now seen corresponding path program 1 times [2023-11-26 10:48:42,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:42,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219168276] [2023-11-26 10:48:42,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:42,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:42,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:42,389 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:48:42,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:42,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219168276] [2023-11-26 10:48:42,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219168276] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:48:42,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921103022] [2023-11-26 10:48:42,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:42,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:42,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc35851-1314-4a3f-b35a-a959a0b98baa/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:48:42,400 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc35851-1314-4a3f-b35a-a959a0b98baa/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:48:42,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc35851-1314-4a3f-b35a-a959a0b98baa/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 10:48:42,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:42,521 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 10:48:42,526 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:48:42,594 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:48:42,595 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:48:42,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921103022] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:48:42,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:48:42,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-26 10:48:42,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994753088] [2023-11-26 10:48:42,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:48:42,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:48:42,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:42,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:48:42,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-26 10:48:42,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 43 [2023-11-26 10:48:42,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 107 flow. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:42,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:48:42,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 43 [2023-11-26 10:48:42,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:48:42,849 INFO L124 PetriNetUnfolderBase]: 227/417 cut-off events. [2023-11-26 10:48:42,849 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-26 10:48:42,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 827 conditions, 417 events. 227/417 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1860 event pairs, 171 based on Foata normal form. 1/374 useless extension candidates. Maximal degree in co-relation 800. Up to 348 conditions per place. [2023-11-26 10:48:42,855 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 18 selfloop transitions, 7 changer transitions 0/38 dead transitions. [2023-11-26 10:48:42,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 38 transitions, 153 flow [2023-11-26 10:48:42,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 10:48:42,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 10:48:42,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 122 transitions. [2023-11-26 10:48:42,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4728682170542636 [2023-11-26 10:48:42,858 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 122 transitions. [2023-11-26 10:48:42,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 122 transitions. [2023-11-26 10:48:42,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:48:42,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 122 transitions. [2023-11-26 10:48:42,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:42,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 43.0) internal successors, (301), 7 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:42,862 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 43.0) internal successors, (301), 7 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:42,862 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 107 flow. Second operand 6 states and 122 transitions. [2023-11-26 10:48:42,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 38 transitions, 153 flow [2023-11-26 10:48:42,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 38 transitions, 150 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 10:48:42,864 INFO L231 Difference]: Finished difference. Result has 47 places, 38 transitions, 114 flow [2023-11-26 10:48:42,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=114, PETRI_PLACES=47, PETRI_TRANSITIONS=38} [2023-11-26 10:48:42,866 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 4 predicate places. [2023-11-26 10:48:42,866 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 38 transitions, 114 flow [2023-11-26 10:48:42,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:42,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:48:42,866 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-26 10:48:42,880 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc35851-1314-4a3f-b35a-a959a0b98baa/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 10:48:43,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc35851-1314-4a3f-b35a-a959a0b98baa/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:43,073 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-26 10:48:43,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:43,074 INFO L85 PathProgramCache]: Analyzing trace with hash 565142489, now seen corresponding path program 1 times [2023-11-26 10:48:43,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:43,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370759883] [2023-11-26 10:48:43,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:43,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:43,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:43,194 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:48:43,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:43,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370759883] [2023-11-26 10:48:43,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370759883] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:48:43,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741431001] [2023-11-26 10:48:43,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:43,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:43,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc35851-1314-4a3f-b35a-a959a0b98baa/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:48:43,198 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc35851-1314-4a3f-b35a-a959a0b98baa/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:48:43,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc35851-1314-4a3f-b35a-a959a0b98baa/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 10:48:43,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:43,293 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 10:48:43,294 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:48:43,329 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:48:43,329 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:48:43,377 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:48:43,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741431001] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:48:43,378 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:48:43,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-26 10:48:43,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175000928] [2023-11-26 10:48:43,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:48:43,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-26 10:48:43,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:43,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-26 10:48:43,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-26 10:48:43,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 43 [2023-11-26 10:48:43,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 38 transitions, 114 flow. Second operand has 12 states, 12 states have (on average 17.083333333333332) internal successors, (205), 12 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:43,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:48:43,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 43 [2023-11-26 10:48:43,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:48:43,601 INFO L124 PetriNetUnfolderBase]: 230/429 cut-off events. [2023-11-26 10:48:43,602 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-26 10:48:43,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 871 conditions, 429 events. 230/429 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1924 event pairs, 171 based on Foata normal form. 3/386 useless extension candidates. Maximal degree in co-relation 801. Up to 355 conditions per place. [2023-11-26 10:48:43,608 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 21 selfloop transitions, 13 changer transitions 0/47 dead transitions. [2023-11-26 10:48:43,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 47 transitions, 236 flow [2023-11-26 10:48:43,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 10:48:43,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-26 10:48:43,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 197 transitions. [2023-11-26 10:48:43,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45813953488372094 [2023-11-26 10:48:43,615 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 197 transitions. [2023-11-26 10:48:43,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 197 transitions. [2023-11-26 10:48:43,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:48:43,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 197 transitions. [2023-11-26 10:48:43,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 19.7) internal successors, (197), 10 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:43,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 43.0) internal successors, (473), 11 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:43,622 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 43.0) internal successors, (473), 11 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:43,623 INFO L175 Difference]: Start difference. First operand has 47 places, 38 transitions, 114 flow. Second operand 10 states and 197 transitions. [2023-11-26 10:48:43,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 47 transitions, 236 flow [2023-11-26 10:48:43,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 47 transitions, 190 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-11-26 10:48:43,627 INFO L231 Difference]: Finished difference. Result has 54 places, 47 transitions, 166 flow [2023-11-26 10:48:43,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=166, PETRI_PLACES=54, PETRI_TRANSITIONS=47} [2023-11-26 10:48:43,629 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 11 predicate places. [2023-11-26 10:48:43,629 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 47 transitions, 166 flow [2023-11-26 10:48:43,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 17.083333333333332) internal successors, (205), 12 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:43,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:48:43,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:43,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc35851-1314-4a3f-b35a-a959a0b98baa/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 10:48:43,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc35851-1314-4a3f-b35a-a959a0b98baa/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:43,837 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-26 10:48:43,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:43,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1249997623, now seen corresponding path program 1 times [2023-11-26 10:48:43,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:43,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576636946] [2023-11-26 10:48:43,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:43,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:43,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:43,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:48:43,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:43,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576636946] [2023-11-26 10:48:43,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576636946] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:48:43,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:48:43,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:48:43,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377224795] [2023-11-26 10:48:43,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:48:43,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:48:43,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:43,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:48:43,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:48:43,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 43 [2023-11-26 10:48:43,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 47 transitions, 166 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:43,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:48:43,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 43 [2023-11-26 10:48:43,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:48:44,234 INFO L124 PetriNetUnfolderBase]: 556/998 cut-off events. [2023-11-26 10:48:44,234 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2023-11-26 10:48:44,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1982 conditions, 998 events. 556/998 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5114 event pairs, 223 based on Foata normal form. 26/955 useless extension candidates. Maximal degree in co-relation 1948. Up to 616 conditions per place. [2023-11-26 10:48:44,245 INFO L140 encePairwiseOnDemand]: 37/43 looper letters, 56 selfloop transitions, 4 changer transitions 0/71 dead transitions. [2023-11-26 10:48:44,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 71 transitions, 342 flow [2023-11-26 10:48:44,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:48:44,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 10:48:44,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2023-11-26 10:48:44,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6395348837209303 [2023-11-26 10:48:44,247 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 110 transitions. [2023-11-26 10:48:44,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 110 transitions. [2023-11-26 10:48:44,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:48:44,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 110 transitions. [2023-11-26 10:48:44,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:44,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 43.0) internal successors, (215), 5 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:44,250 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 43.0) internal successors, (215), 5 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:44,250 INFO L175 Difference]: Start difference. First operand has 54 places, 47 transitions, 166 flow. Second operand 4 states and 110 transitions. [2023-11-26 10:48:44,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 71 transitions, 342 flow [2023-11-26 10:48:44,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 71 transitions, 331 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-26 10:48:44,255 INFO L231 Difference]: Finished difference. Result has 57 places, 50 transitions, 184 flow [2023-11-26 10:48:44,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=184, PETRI_PLACES=57, PETRI_TRANSITIONS=50} [2023-11-26 10:48:44,256 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 14 predicate places. [2023-11-26 10:48:44,256 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 50 transitions, 184 flow [2023-11-26 10:48:44,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:44,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:48:44,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:44,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 10:48:44,257 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-26 10:48:44,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:44,258 INFO L85 PathProgramCache]: Analyzing trace with hash 464337150, now seen corresponding path program 1 times [2023-11-26 10:48:44,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:44,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614385375] [2023-11-26 10:48:44,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:44,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:44,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:44,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:48:44,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:44,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614385375] [2023-11-26 10:48:44,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614385375] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:48:44,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:48:44,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:48:44,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563262455] [2023-11-26 10:48:44,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:48:44,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:48:44,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:44,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:48:44,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:48:44,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 43 [2023-11-26 10:48:44,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 50 transitions, 184 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:44,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:48:44,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 43 [2023-11-26 10:48:44,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:48:44,689 INFO L124 PetriNetUnfolderBase]: 900/1503 cut-off events. [2023-11-26 10:48:44,689 INFO L125 PetriNetUnfolderBase]: For 465/640 co-relation queries the response was YES. [2023-11-26 10:48:44,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3436 conditions, 1503 events. 900/1503 cut-off events. For 465/640 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 7861 event pairs, 405 based on Foata normal form. 99/1513 useless extension candidates. Maximal degree in co-relation 3400. Up to 952 conditions per place. [2023-11-26 10:48:44,710 INFO L140 encePairwiseOnDemand]: 37/43 looper letters, 62 selfloop transitions, 4 changer transitions 0/78 dead transitions. [2023-11-26 10:48:44,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 78 transitions, 404 flow [2023-11-26 10:48:44,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:48:44,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 10:48:44,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2023-11-26 10:48:44,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6395348837209303 [2023-11-26 10:48:44,712 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 110 transitions. [2023-11-26 10:48:44,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 110 transitions. [2023-11-26 10:48:44,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:48:44,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 110 transitions. [2023-11-26 10:48:44,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:44,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 43.0) internal successors, (215), 5 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:44,716 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 43.0) internal successors, (215), 5 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:44,716 INFO L175 Difference]: Start difference. First operand has 57 places, 50 transitions, 184 flow. Second operand 4 states and 110 transitions. [2023-11-26 10:48:44,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 78 transitions, 404 flow [2023-11-26 10:48:44,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 78 transitions, 395 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 10:48:44,725 INFO L231 Difference]: Finished difference. Result has 61 places, 53 transitions, 210 flow [2023-11-26 10:48:44,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=210, PETRI_PLACES=61, PETRI_TRANSITIONS=53} [2023-11-26 10:48:44,728 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 18 predicate places. [2023-11-26 10:48:44,729 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 53 transitions, 210 flow [2023-11-26 10:48:44,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:44,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:48:44,729 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:44,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 10:48:44,730 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-26 10:48:44,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:44,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1622304388, now seen corresponding path program 1 times [2023-11-26 10:48:44,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:44,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594687401] [2023-11-26 10:48:44,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:44,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:44,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:44,879 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 10:48:44,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:44,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594687401] [2023-11-26 10:48:44,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594687401] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:48:44,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:48:44,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:48:44,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356964692] [2023-11-26 10:48:44,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:48:44,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:48:44,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:44,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:48:44,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:48:44,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 43 [2023-11-26 10:48:44,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 53 transitions, 210 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:44,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:48:44,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 43 [2023-11-26 10:48:44,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:48:45,087 INFO L124 PetriNetUnfolderBase]: 563/996 cut-off events. [2023-11-26 10:48:45,087 INFO L125 PetriNetUnfolderBase]: For 466/616 co-relation queries the response was YES. [2023-11-26 10:48:45,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2481 conditions, 996 events. 563/996 cut-off events. For 466/616 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 5105 event pairs, 403 based on Foata normal form. 52/963 useless extension candidates. Maximal degree in co-relation 2450. Up to 825 conditions per place. [2023-11-26 10:48:45,098 INFO L140 encePairwiseOnDemand]: 40/43 looper letters, 34 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2023-11-26 10:48:45,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 52 transitions, 279 flow [2023-11-26 10:48:45,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:48:45,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 10:48:45,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2023-11-26 10:48:45,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6046511627906976 [2023-11-26 10:48:45,100 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 78 transitions. [2023-11-26 10:48:45,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 78 transitions. [2023-11-26 10:48:45,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:48:45,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 78 transitions. [2023-11-26 10:48:45,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:45,102 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:45,102 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:45,102 INFO L175 Difference]: Start difference. First operand has 61 places, 53 transitions, 210 flow. Second operand 3 states and 78 transitions. [2023-11-26 10:48:45,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 52 transitions, 279 flow [2023-11-26 10:48:45,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 52 transitions, 276 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 10:48:45,106 INFO L231 Difference]: Finished difference. Result has 62 places, 52 transitions, 208 flow [2023-11-26 10:48:45,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=208, PETRI_PLACES=62, PETRI_TRANSITIONS=52} [2023-11-26 10:48:45,107 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 19 predicate places. [2023-11-26 10:48:45,107 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 52 transitions, 208 flow [2023-11-26 10:48:45,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:45,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:48:45,108 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2023-11-26 10:48:45,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 10:48:45,108 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-26 10:48:45,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:45,109 INFO L85 PathProgramCache]: Analyzing trace with hash -217579724, now seen corresponding path program 2 times [2023-11-26 10:48:45,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:45,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260820065] [2023-11-26 10:48:45,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:45,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:45,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:45,289 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:48:45,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:45,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260820065] [2023-11-26 10:48:45,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260820065] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:48:45,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683995878] [2023-11-26 10:48:45,290 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 10:48:45,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:45,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc35851-1314-4a3f-b35a-a959a0b98baa/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:48:45,292 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc35851-1314-4a3f-b35a-a959a0b98baa/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:48:45,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc35851-1314-4a3f-b35a-a959a0b98baa/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 10:48:45,403 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-26 10:48:45,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 10:48:45,405 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 10:48:45,407 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:48:45,473 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-26 10:48:45,474 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:48:45,522 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-26 10:48:45,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [683995878] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:48:45,522 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:48:45,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2023-11-26 10:48:45,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078190245] [2023-11-26 10:48:45,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:48:45,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-26 10:48:45,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:45,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-26 10:48:45,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-11-26 10:48:45,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 43 [2023-11-26 10:48:45,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 52 transitions, 208 flow. Second operand has 14 states, 14 states have (on average 17.142857142857142) internal successors, (240), 14 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:45,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:48:45,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 43 [2023-11-26 10:48:45,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:48:45,917 INFO L124 PetriNetUnfolderBase]: 564/999 cut-off events. [2023-11-26 10:48:45,917 INFO L125 PetriNetUnfolderBase]: For 414/564 co-relation queries the response was YES. [2023-11-26 10:48:45,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2410 conditions, 999 events. 564/999 cut-off events. For 414/564 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5110 event pairs, 403 based on Foata normal form. 53/966 useless extension candidates. Maximal degree in co-relation 2386. Up to 817 conditions per place. [2023-11-26 10:48:45,930 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 21 selfloop transitions, 18 changer transitions 0/54 dead transitions. [2023-11-26 10:48:45,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 54 transitions, 292 flow [2023-11-26 10:48:45,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-26 10:48:45,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-26 10:48:45,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 261 transitions. [2023-11-26 10:48:45,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4335548172757475 [2023-11-26 10:48:45,933 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 261 transitions. [2023-11-26 10:48:45,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 261 transitions. [2023-11-26 10:48:45,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:48:45,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 261 transitions. [2023-11-26 10:48:45,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 18.642857142857142) internal successors, (261), 14 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:45,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 43.0) internal successors, (645), 15 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:45,938 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 43.0) internal successors, (645), 15 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:45,939 INFO L175 Difference]: Start difference. First operand has 62 places, 52 transitions, 208 flow. Second operand 14 states and 261 transitions. [2023-11-26 10:48:45,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 54 transitions, 292 flow [2023-11-26 10:48:45,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 54 transitions, 276 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-11-26 10:48:45,944 INFO L231 Difference]: Finished difference. Result has 68 places, 54 transitions, 234 flow [2023-11-26 10:48:45,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=234, PETRI_PLACES=68, PETRI_TRANSITIONS=54} [2023-11-26 10:48:45,945 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 25 predicate places. [2023-11-26 10:48:45,945 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 54 transitions, 234 flow [2023-11-26 10:48:45,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.142857142857142) internal successors, (240), 14 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:45,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:48:45,946 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:45,959 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc35851-1314-4a3f-b35a-a959a0b98baa/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-26 10:48:46,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc35851-1314-4a3f-b35a-a959a0b98baa/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-26 10:48:46,154 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-26 10:48:46,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:46,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1876576321, now seen corresponding path program 1 times [2023-11-26 10:48:46,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:46,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674782931] [2023-11-26 10:48:46,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:46,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:46,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:46,260 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 10:48:46,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:46,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674782931] [2023-11-26 10:48:46,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674782931] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:48:46,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829600238] [2023-11-26 10:48:46,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:46,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:46,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc35851-1314-4a3f-b35a-a959a0b98baa/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:48:46,264 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc35851-1314-4a3f-b35a-a959a0b98baa/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:48:46,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc35851-1314-4a3f-b35a-a959a0b98baa/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 10:48:46,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:46,382 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-26 10:48:46,385 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:48:46,565 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:48:46,566 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:48:46,742 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:48:46,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829600238] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:48:46,743 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:48:46,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2023-11-26 10:48:46,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477216651] [2023-11-26 10:48:46,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:48:46,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-26 10:48:46,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:46,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-26 10:48:46,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2023-11-26 10:48:46,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2023-11-26 10:48:46,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 54 transitions, 234 flow. Second operand has 19 states, 19 states have (on average 14.0) internal successors, (266), 19 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:46,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:48:46,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2023-11-26 10:48:46,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:48:47,912 INFO L124 PetriNetUnfolderBase]: 1564/2534 cut-off events. [2023-11-26 10:48:47,913 INFO L125 PetriNetUnfolderBase]: For 865/1127 co-relation queries the response was YES. [2023-11-26 10:48:47,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6336 conditions, 2534 events. 1564/2534 cut-off events. For 865/1127 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 14202 event pairs, 262 based on Foata normal form. 168/2581 useless extension candidates. Maximal degree in co-relation 3797. Up to 392 conditions per place. [2023-11-26 10:48:47,936 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 118 selfloop transitions, 25 changer transitions 8/161 dead transitions. [2023-11-26 10:48:47,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 161 transitions, 874 flow [2023-11-26 10:48:47,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-26 10:48:47,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-26 10:48:47,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 294 transitions. [2023-11-26 10:48:47,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4883720930232558 [2023-11-26 10:48:47,939 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 294 transitions. [2023-11-26 10:48:47,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 294 transitions. [2023-11-26 10:48:47,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:48:47,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 294 transitions. [2023-11-26 10:48:47,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 21.0) internal successors, (294), 14 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:47,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 43.0) internal successors, (645), 15 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:47,943 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 43.0) internal successors, (645), 15 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:47,943 INFO L175 Difference]: Start difference. First operand has 68 places, 54 transitions, 234 flow. Second operand 14 states and 294 transitions. [2023-11-26 10:48:47,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 161 transitions, 874 flow [2023-11-26 10:48:47,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 161 transitions, 806 flow, removed 6 selfloop flow, removed 12 redundant places. [2023-11-26 10:48:47,953 INFO L231 Difference]: Finished difference. Result has 69 places, 58 transitions, 238 flow [2023-11-26 10:48:47,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=238, PETRI_PLACES=69, PETRI_TRANSITIONS=58} [2023-11-26 10:48:47,954 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 26 predicate places. [2023-11-26 10:48:47,954 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 58 transitions, 238 flow [2023-11-26 10:48:47,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 14.0) internal successors, (266), 19 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:47,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:48:47,955 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:47,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc35851-1314-4a3f-b35a-a959a0b98baa/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 10:48:48,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc35851-1314-4a3f-b35a-a959a0b98baa/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:48,161 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-26 10:48:48,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:48,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1549332557, now seen corresponding path program 1 times [2023-11-26 10:48:48,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:48,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625330613] [2023-11-26 10:48:48,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:48,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:48,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:48,250 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 10:48:48,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:48,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625330613] [2023-11-26 10:48:48,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625330613] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:48:48,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649837072] [2023-11-26 10:48:48,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:48,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:48,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc35851-1314-4a3f-b35a-a959a0b98baa/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:48:48,252 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc35851-1314-4a3f-b35a-a959a0b98baa/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:48:48,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc35851-1314-4a3f-b35a-a959a0b98baa/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 10:48:48,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:48,367 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-26 10:48:48,369 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:48:48,519 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:48:48,519 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:48:48,672 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:48:48,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [649837072] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:48:48,672 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:48:48,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2023-11-26 10:48:48,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621612302] [2023-11-26 10:48:48,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:48:48,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-26 10:48:48,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:48,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-26 10:48:48,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2023-11-26 10:48:48,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2023-11-26 10:48:48,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 58 transitions, 238 flow. Second operand has 19 states, 19 states have (on average 14.210526315789474) internal successors, (270), 19 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:48,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:48:48,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2023-11-26 10:48:48,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:48:49,708 INFO L124 PetriNetUnfolderBase]: 1642/2734 cut-off events. [2023-11-26 10:48:49,709 INFO L125 PetriNetUnfolderBase]: For 2141/2203 co-relation queries the response was YES. [2023-11-26 10:48:49,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7359 conditions, 2734 events. 1642/2734 cut-off events. For 2141/2203 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 15812 event pairs, 278 based on Foata normal form. 84/2717 useless extension candidates. Maximal degree in co-relation 4175. Up to 488 conditions per place. [2023-11-26 10:48:49,729 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 81 selfloop transitions, 19 changer transitions 53/162 dead transitions. [2023-11-26 10:48:49,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 162 transitions, 941 flow [2023-11-26 10:48:49,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-26 10:48:49,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-26 10:48:49,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 294 transitions. [2023-11-26 10:48:49,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4883720930232558 [2023-11-26 10:48:49,732 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 294 transitions. [2023-11-26 10:48:49,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 294 transitions. [2023-11-26 10:48:49,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:48:49,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 294 transitions. [2023-11-26 10:48:49,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 21.0) internal successors, (294), 14 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:49,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 43.0) internal successors, (645), 15 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:49,736 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 43.0) internal successors, (645), 15 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:49,736 INFO L175 Difference]: Start difference. First operand has 69 places, 58 transitions, 238 flow. Second operand 14 states and 294 transitions. [2023-11-26 10:48:49,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 162 transitions, 941 flow [2023-11-26 10:48:49,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 162 transitions, 848 flow, removed 11 selfloop flow, removed 7 redundant places. [2023-11-26 10:48:49,747 INFO L231 Difference]: Finished difference. Result has 75 places, 51 transitions, 210 flow [2023-11-26 10:48:49,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=210, PETRI_PLACES=75, PETRI_TRANSITIONS=51} [2023-11-26 10:48:49,748 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 32 predicate places. [2023-11-26 10:48:49,748 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 51 transitions, 210 flow [2023-11-26 10:48:49,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 14.210526315789474) internal successors, (270), 19 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:49,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:48:49,749 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:49,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc35851-1314-4a3f-b35a-a959a0b98baa/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 10:48:49,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc35851-1314-4a3f-b35a-a959a0b98baa/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:49,955 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-26 10:48:49,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:49,955 INFO L85 PathProgramCache]: Analyzing trace with hash 724794789, now seen corresponding path program 1 times [2023-11-26 10:48:49,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:49,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844642774] [2023-11-26 10:48:49,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:49,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:49,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:50,040 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 10:48:50,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:50,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844642774] [2023-11-26 10:48:50,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844642774] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:48:50,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967951628] [2023-11-26 10:48:50,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:50,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:50,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc35851-1314-4a3f-b35a-a959a0b98baa/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:48:50,042 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc35851-1314-4a3f-b35a-a959a0b98baa/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:48:50,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc35851-1314-4a3f-b35a-a959a0b98baa/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 10:48:50,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:50,161 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 10:48:50,171 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:48:50,210 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 10:48:50,210 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:48:50,264 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 10:48:50,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967951628] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:48:50,265 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:48:50,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-26 10:48:50,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008396628] [2023-11-26 10:48:50,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:48:50,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-26 10:48:50,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:50,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-26 10:48:50,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-26 10:48:50,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 43 [2023-11-26 10:48:50,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 51 transitions, 210 flow. Second operand has 12 states, 12 states have (on average 16.916666666666668) internal successors, (203), 12 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:50,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:48:50,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 43 [2023-11-26 10:48:50,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:48:51,005 INFO L124 PetriNetUnfolderBase]: 1855/3259 cut-off events. [2023-11-26 10:48:51,005 INFO L125 PetriNetUnfolderBase]: For 2939/3033 co-relation queries the response was YES. [2023-11-26 10:48:51,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8762 conditions, 3259 events. 1855/3259 cut-off events. For 2939/3033 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 19185 event pairs, 593 based on Foata normal form. 132/3306 useless extension candidates. Maximal degree in co-relation 5819. Up to 1201 conditions per place. [2023-11-26 10:48:51,039 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 137 selfloop transitions, 13 changer transitions 0/160 dead transitions. [2023-11-26 10:48:51,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 160 transitions, 944 flow [2023-11-26 10:48:51,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 10:48:51,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-26 10:48:51,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 272 transitions. [2023-11-26 10:48:51,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6325581395348837 [2023-11-26 10:48:51,041 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 272 transitions. [2023-11-26 10:48:51,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 272 transitions. [2023-11-26 10:48:51,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:48:51,042 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 272 transitions. [2023-11-26 10:48:51,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 27.2) internal successors, (272), 10 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:51,044 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 43.0) internal successors, (473), 11 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:51,044 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 43.0) internal successors, (473), 11 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:51,045 INFO L175 Difference]: Start difference. First operand has 75 places, 51 transitions, 210 flow. Second operand 10 states and 272 transitions. [2023-11-26 10:48:51,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 160 transitions, 944 flow [2023-11-26 10:48:51,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 160 transitions, 815 flow, removed 12 selfloop flow, removed 11 redundant places. [2023-11-26 10:48:51,055 INFO L231 Difference]: Finished difference. Result has 70 places, 60 transitions, 239 flow [2023-11-26 10:48:51,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=239, PETRI_PLACES=70, PETRI_TRANSITIONS=60} [2023-11-26 10:48:51,056 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 27 predicate places. [2023-11-26 10:48:51,056 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 60 transitions, 239 flow [2023-11-26 10:48:51,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 16.916666666666668) internal successors, (203), 12 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:51,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:48:51,057 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:51,063 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc35851-1314-4a3f-b35a-a959a0b98baa/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-26 10:48:51,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc35851-1314-4a3f-b35a-a959a0b98baa/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-26 10:48:51,263 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-26 10:48:51,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:51,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1748836730, now seen corresponding path program 1 times [2023-11-26 10:48:51,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:51,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822236405] [2023-11-26 10:48:51,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:51,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:51,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:51,353 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 10:48:51,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:51,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822236405] [2023-11-26 10:48:51,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822236405] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:48:51,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416509523] [2023-11-26 10:48:51,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:51,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:51,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc35851-1314-4a3f-b35a-a959a0b98baa/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:48:51,355 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc35851-1314-4a3f-b35a-a959a0b98baa/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:48:51,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc35851-1314-4a3f-b35a-a959a0b98baa/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-26 10:48:51,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:51,488 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 10:48:51,490 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:48:51,517 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 10:48:51,517 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:48:51,565 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 10:48:51,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416509523] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:48:51,565 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:48:51,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-26 10:48:51,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806546375] [2023-11-26 10:48:51,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:48:51,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-26 10:48:51,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:51,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-26 10:48:51,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-26 10:48:51,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 43 [2023-11-26 10:48:51,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 60 transitions, 239 flow. Second operand has 12 states, 12 states have (on average 17.083333333333332) internal successors, (205), 12 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:51,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:48:51,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 43 [2023-11-26 10:48:51,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:48:52,712 INFO L124 PetriNetUnfolderBase]: 3829/6430 cut-off events. [2023-11-26 10:48:52,712 INFO L125 PetriNetUnfolderBase]: For 6862/7086 co-relation queries the response was YES. [2023-11-26 10:48:52,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17045 conditions, 6430 events. 3829/6430 cut-off events. For 6862/7086 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 40260 event pairs, 1073 based on Foata normal form. 258/6567 useless extension candidates. Maximal degree in co-relation 13749. Up to 2239 conditions per place. [2023-11-26 10:48:52,847 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 191 selfloop transitions, 13 changer transitions 0/217 dead transitions. [2023-11-26 10:48:52,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 217 transitions, 1414 flow [2023-11-26 10:48:52,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 10:48:52,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-26 10:48:52,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 272 transitions. [2023-11-26 10:48:52,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6325581395348837 [2023-11-26 10:48:52,849 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 272 transitions. [2023-11-26 10:48:52,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 272 transitions. [2023-11-26 10:48:52,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:48:52,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 272 transitions. [2023-11-26 10:48:52,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 27.2) internal successors, (272), 10 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:52,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 43.0) internal successors, (473), 11 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:52,853 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 43.0) internal successors, (473), 11 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:52,853 INFO L175 Difference]: Start difference. First operand has 70 places, 60 transitions, 239 flow. Second operand 10 states and 272 transitions. [2023-11-26 10:48:52,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 217 transitions, 1414 flow [2023-11-26 10:48:52,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 217 transitions, 1331 flow, removed 27 selfloop flow, removed 2 redundant places. [2023-11-26 10:48:52,865 INFO L231 Difference]: Finished difference. Result has 80 places, 69 transitions, 311 flow [2023-11-26 10:48:52,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=311, PETRI_PLACES=80, PETRI_TRANSITIONS=69} [2023-11-26 10:48:52,866 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 37 predicate places. [2023-11-26 10:48:52,866 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 69 transitions, 311 flow [2023-11-26 10:48:52,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 17.083333333333332) internal successors, (205), 12 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:52,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:48:52,867 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-26 10:48:52,886 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc35851-1314-4a3f-b35a-a959a0b98baa/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-26 10:48:53,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc35851-1314-4a3f-b35a-a959a0b98baa/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:53,073 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-26 10:48:53,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:53,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1192290688, now seen corresponding path program 2 times [2023-11-26 10:48:53,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:53,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786320114] [2023-11-26 10:48:53,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:53,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:53,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:53,369 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-26 10:48:53,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:53,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786320114] [2023-11-26 10:48:53,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786320114] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:48:53,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108230205] [2023-11-26 10:48:53,370 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 10:48:53,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:53,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc35851-1314-4a3f-b35a-a959a0b98baa/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:48:53,371 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc35851-1314-4a3f-b35a-a959a0b98baa/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:48:53,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc35851-1314-4a3f-b35a-a959a0b98baa/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-26 10:48:53,487 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-26 10:48:53,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 10:48:53,489 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 10:48:53,491 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:48:53,562 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-11-26 10:48:53,562 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:48:53,637 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-11-26 10:48:53,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108230205] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:48:53,638 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:48:53,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 3, 3] total 11 [2023-11-26 10:48:53,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662490012] [2023-11-26 10:48:53,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:48:53,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-26 10:48:53,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:53,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-26 10:48:53,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2023-11-26 10:48:53,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2023-11-26 10:48:53,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 69 transitions, 311 flow. Second operand has 13 states, 13 states have (on average 14.307692307692308) internal successors, (186), 13 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:53,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:48:53,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2023-11-26 10:48:53,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:48:56,097 INFO L124 PetriNetUnfolderBase]: 8755/13898 cut-off events. [2023-11-26 10:48:56,097 INFO L125 PetriNetUnfolderBase]: For 19457/20152 co-relation queries the response was YES. [2023-11-26 10:48:56,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40317 conditions, 13898 events. 8755/13898 cut-off events. For 19457/20152 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 92439 event pairs, 1142 based on Foata normal form. 160/13885 useless extension candidates. Maximal degree in co-relation 31979. Up to 2816 conditions per place. [2023-11-26 10:48:56,183 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 142 selfloop transitions, 38 changer transitions 45/237 dead transitions. [2023-11-26 10:48:56,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 237 transitions, 1595 flow [2023-11-26 10:48:56,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-26 10:48:56,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-26 10:48:56,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 322 transitions. [2023-11-26 10:48:56,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4680232558139535 [2023-11-26 10:48:56,192 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 322 transitions. [2023-11-26 10:48:56,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 322 transitions. [2023-11-26 10:48:56,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:48:56,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 322 transitions. [2023-11-26 10:48:56,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 20.125) internal successors, (322), 16 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:56,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 43.0) internal successors, (731), 17 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:56,198 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 43.0) internal successors, (731), 17 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:56,198 INFO L175 Difference]: Start difference. First operand has 80 places, 69 transitions, 311 flow. Second operand 16 states and 322 transitions. [2023-11-26 10:48:56,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 237 transitions, 1595 flow [2023-11-26 10:48:56,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 237 transitions, 1492 flow, removed 29 selfloop flow, removed 6 redundant places. [2023-11-26 10:48:56,275 INFO L231 Difference]: Finished difference. Result has 90 places, 81 transitions, 449 flow [2023-11-26 10:48:56,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=449, PETRI_PLACES=90, PETRI_TRANSITIONS=81} [2023-11-26 10:48:56,277 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 47 predicate places. [2023-11-26 10:48:56,277 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 81 transitions, 449 flow [2023-11-26 10:48:56,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 14.307692307692308) internal successors, (186), 13 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:56,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:48:56,278 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:56,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc35851-1314-4a3f-b35a-a959a0b98baa/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-26 10:48:56,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc35851-1314-4a3f-b35a-a959a0b98baa/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-26 10:48:56,489 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-26 10:48:56,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:56,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1800533452, now seen corresponding path program 2 times [2023-11-26 10:48:56,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:56,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507430035] [2023-11-26 10:48:56,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:56,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:56,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:56,707 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-26 10:48:56,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:56,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507430035] [2023-11-26 10:48:56,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507430035] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:48:56,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175158717] [2023-11-26 10:48:56,708 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 10:48:56,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:56,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc35851-1314-4a3f-b35a-a959a0b98baa/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:48:56,709 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc35851-1314-4a3f-b35a-a959a0b98baa/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:48:56,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc35851-1314-4a3f-b35a-a959a0b98baa/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-26 10:48:56,826 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-26 10:48:56,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 10:48:56,828 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 10:48:56,829 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:48:56,903 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-11-26 10:48:56,904 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:48:56,978 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-11-26 10:48:56,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1175158717] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:48:56,979 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:48:56,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 3, 3] total 11 [2023-11-26 10:48:56,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955341790] [2023-11-26 10:48:56,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:48:56,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-26 10:48:56,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:56,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-26 10:48:56,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2023-11-26 10:48:57,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2023-11-26 10:48:57,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 81 transitions, 449 flow. Second operand has 13 states, 13 states have (on average 14.615384615384615) internal successors, (190), 13 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:57,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:48:57,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2023-11-26 10:48:57,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:48:58,994 INFO L124 PetriNetUnfolderBase]: 7881/12527 cut-off events. [2023-11-26 10:48:58,994 INFO L125 PetriNetUnfolderBase]: For 26901/27656 co-relation queries the response was YES. [2023-11-26 10:48:59,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37412 conditions, 12527 events. 7881/12527 cut-off events. For 26901/27656 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 84024 event pairs, 658 based on Foata normal form. 550/12982 useless extension candidates. Maximal degree in co-relation 27463. Up to 2992 conditions per place. [2023-11-26 10:48:59,028 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 0 selfloop transitions, 0 changer transitions 233/233 dead transitions. [2023-11-26 10:48:59,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 233 transitions, 1708 flow [2023-11-26 10:48:59,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-26 10:48:59,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-26 10:48:59,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 317 transitions. [2023-11-26 10:48:59,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46075581395348836 [2023-11-26 10:48:59,031 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 317 transitions. [2023-11-26 10:48:59,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 317 transitions. [2023-11-26 10:48:59,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:48:59,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 317 transitions. [2023-11-26 10:48:59,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 19.8125) internal successors, (317), 16 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:59,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 43.0) internal successors, (731), 17 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:59,036 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 43.0) internal successors, (731), 17 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:59,036 INFO L175 Difference]: Start difference. First operand has 90 places, 81 transitions, 449 flow. Second operand 16 states and 317 transitions. [2023-11-26 10:48:59,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 233 transitions, 1708 flow [2023-11-26 10:48:59,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 233 transitions, 1676 flow, removed 2 selfloop flow, removed 10 redundant places. [2023-11-26 10:48:59,116 INFO L231 Difference]: Finished difference. Result has 92 places, 0 transitions, 0 flow [2023-11-26 10:48:59,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=0, PETRI_PLACES=92, PETRI_TRANSITIONS=0} [2023-11-26 10:48:59,117 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 49 predicate places. [2023-11-26 10:48:59,117 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 0 transitions, 0 flow [2023-11-26 10:48:59,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 14.615384615384615) internal successors, (190), 13 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:59,120 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 13 remaining) [2023-11-26 10:48:59,121 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2023-11-26 10:48:59,121 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2023-11-26 10:48:59,121 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2023-11-26 10:48:59,121 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2023-11-26 10:48:59,122 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2023-11-26 10:48:59,122 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 13 remaining) [2023-11-26 10:48:59,122 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 13 remaining) [2023-11-26 10:48:59,122 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 13 remaining) [2023-11-26 10:48:59,122 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2023-11-26 10:48:59,123 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2023-11-26 10:48:59,123 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2023-11-26 10:48:59,123 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2023-11-26 10:48:59,129 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc35851-1314-4a3f-b35a-a959a0b98baa/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-26 10:48:59,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc35851-1314-4a3f-b35a-a959a0b98baa/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-26 10:48:59,329 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:59,337 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-26 10:48:59,337 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-26 10:48:59,346 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 10:48:59 BasicIcfg [2023-11-26 10:48:59,347 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-26 10:48:59,347 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 10:48:59,347 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 10:48:59,348 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 10:48:59,348 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:48:41" (3/4) ... [2023-11-26 10:48:59,351 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-26 10:48:59,354 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-26 10:48:59,355 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-26 10:48:59,355 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-11-26 10:48:59,367 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 99 nodes and edges [2023-11-26 10:48:59,368 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 26 nodes and edges [2023-11-26 10:48:59,368 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2023-11-26 10:48:59,369 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-26 10:48:59,484 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc35851-1314-4a3f-b35a-a959a0b98baa/bin/uautomizer-verify-VRDe98Ueme/witness.graphml [2023-11-26 10:48:59,484 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc35851-1314-4a3f-b35a-a959a0b98baa/bin/uautomizer-verify-VRDe98Ueme/witness.yml [2023-11-26 10:48:59,485 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 10:48:59,485 INFO L158 Benchmark]: Toolchain (without parser) took 19619.64ms. Allocated memory was 174.1MB in the beginning and 834.7MB in the end (delta: 660.6MB). Free memory was 128.3MB in the beginning and 464.4MB in the end (delta: -336.1MB). Peak memory consumption was 326.6MB. Max. memory is 16.1GB. [2023-11-26 10:48:59,486 INFO L158 Benchmark]: CDTParser took 1.21ms. Allocated memory is still 121.6MB. Free memory was 88.6MB in the beginning and 88.6MB in the end (delta: 25.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 10:48:59,486 INFO L158 Benchmark]: CACSL2BoogieTranslator took 297.41ms. Allocated memory is still 174.1MB. Free memory was 127.3MB in the beginning and 115.7MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-26 10:48:59,487 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.80ms. Allocated memory is still 174.1MB. Free memory was 115.7MB in the beginning and 113.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 10:48:59,487 INFO L158 Benchmark]: Boogie Preprocessor took 55.86ms. Allocated memory is still 174.1MB. Free memory was 113.6MB in the beginning and 111.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 10:48:59,488 INFO L158 Benchmark]: RCFGBuilder took 908.59ms. Allocated memory is still 174.1MB. Free memory was 111.5MB in the beginning and 67.5MB in the end (delta: 44.0MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. [2023-11-26 10:48:59,488 INFO L158 Benchmark]: TraceAbstraction took 18165.31ms. Allocated memory was 174.1MB in the beginning and 834.7MB in the end (delta: 660.6MB). Free memory was 67.5MB in the beginning and 469.6MB in the end (delta: -402.1MB). Peak memory consumption was 328.7MB. Max. memory is 16.1GB. [2023-11-26 10:48:59,489 INFO L158 Benchmark]: Witness Printer took 137.50ms. Allocated memory is still 834.7MB. Free memory was 469.6MB in the beginning and 464.4MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-26 10:48:59,491 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.21ms. Allocated memory is still 121.6MB. Free memory was 88.6MB in the beginning and 88.6MB in the end (delta: 25.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 297.41ms. Allocated memory is still 174.1MB. Free memory was 127.3MB in the beginning and 115.7MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.80ms. Allocated memory is still 174.1MB. Free memory was 115.7MB in the beginning and 113.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 55.86ms. Allocated memory is still 174.1MB. Free memory was 113.6MB in the beginning and 111.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 908.59ms. Allocated memory is still 174.1MB. Free memory was 111.5MB in the beginning and 67.5MB in the end (delta: 44.0MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. * TraceAbstraction took 18165.31ms. Allocated memory was 174.1MB in the beginning and 834.7MB in the end (delta: 660.6MB). Free memory was 67.5MB in the beginning and 469.6MB in the end (delta: -402.1MB). Peak memory consumption was 328.7MB. Max. memory is 16.1GB. * Witness Printer took 137.50ms. Allocated memory is still 834.7MB. Free memory was 469.6MB in the beginning and 464.4MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. 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: 59]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 59]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 108]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 108]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 66 locations, 13 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: 18.0s, OverallIterations: 13, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 11.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1196 SdHoareTripleChecker+Valid, 3.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1129 mSDsluCounter, 858 SdHoareTripleChecker+Invalid, 2.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 851 mSDsCounter, 47 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4700 IncrementalHoareTripleChecker+Invalid, 4747 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 47 mSolverCounterUnsat, 7 mSDtfsCounter, 4700 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 457 GetRequests, 277 SyntacticMatches, 7 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 560 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=449occurred in iteration=12, InterpolantAutomatonStates: 125, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 388 NumberOfCodeBlocks, 324 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 529 ConstructedInterpolants, 0 QuantifiedInterpolants, 1581 SizeOfPredicates, 29 NumberOfNonLiveVariables, 1183 ConjunctsInSsa, 54 ConjunctsInUnsatCore, 30 InterpolantComputations, 5 PerfectInterpolantSequences, 322/527 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-26 10:48:59,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dc35851-1314-4a3f-b35a-a959a0b98baa/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE