./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ef6f80-dc68-48e1-9a04-4319f74a7e04/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ef6f80-dc68-48e1-9a04-4319f74a7e04/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_a3ef6f80-dc68-48e1-9a04-4319f74a7e04/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ef6f80-dc68-48e1-9a04-4319f74a7e04/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ef6f80-dc68-48e1-9a04-4319f74a7e04/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_a3ef6f80-dc68-48e1-9a04-4319f74a7e04/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 8d3b4a56bf20a7e5cb147a14169234a27b247cfdef3db9f4b8a4f4a17cd6fe47 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:41:56,006 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:41:56,124 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ef6f80-dc68-48e1-9a04-4319f74a7e04/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-26 10:41:56,134 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:41:56,135 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:41:56,179 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:41:56,182 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:41:56,183 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:41:56,184 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:41:56,189 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:41:56,190 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:41:56,190 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:41:56,191 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:41:56,193 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:41:56,193 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:41:56,194 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:41:56,194 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:41:56,195 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:41:56,195 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:41:56,195 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:41:56,196 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:41:56,197 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:41:56,197 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:41:56,197 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:41:56,198 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 10:41:56,198 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 10:41:56,198 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:41:56,208 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:41:56,209 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:41:56,210 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:41:56,211 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:41:56,211 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:41:56,211 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:41:56,212 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:41:56,212 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:41:56,212 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:41:56,212 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:41:56,213 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:41:56,213 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:41:56,213 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:41:56,213 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:41:56,213 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:41:56,214 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:41:56,214 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:41:56,214 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_a3ef6f80-dc68-48e1-9a04-4319f74a7e04/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ef6f80-dc68-48e1-9a04-4319f74a7e04/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d3b4a56bf20a7e5cb147a14169234a27b247cfdef3db9f4b8a4f4a17cd6fe47 [2023-11-26 10:41:56,518 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:41:56,541 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:41:56,543 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:41:56,545 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:41:56,545 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:41:56,546 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ef6f80-dc68-48e1-9a04-4319f74a7e04/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c [2023-11-26 10:41:59,715 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:41:59,958 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:41:59,959 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ef6f80-dc68-48e1-9a04-4319f74a7e04/sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c [2023-11-26 10:41:59,968 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ef6f80-dc68-48e1-9a04-4319f74a7e04/bin/uautomizer-verify-VRDe98Ueme/data/c2ee31224/0700dd07d5cb4f76ae9f8fa64c1b1d50/FLAG246f8b62f [2023-11-26 10:41:59,993 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ef6f80-dc68-48e1-9a04-4319f74a7e04/bin/uautomizer-verify-VRDe98Ueme/data/c2ee31224/0700dd07d5cb4f76ae9f8fa64c1b1d50 [2023-11-26 10:41:59,996 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:41:59,998 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:41:59,999 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:41:59,999 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:42:00,005 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:42:00,006 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:41:59" (1/1) ... [2023-11-26 10:42:00,007 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28f6c67f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:00, skipping insertion in model container [2023-11-26 10:42:00,007 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:41:59" (1/1) ... [2023-11-26 10:42:00,036 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:42:00,271 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:42:00,281 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:42:00,318 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:42:00,327 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:42:00,327 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:42:00,335 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:42:00,336 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:00 WrapperNode [2023-11-26 10:42:00,336 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:42:00,337 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:42:00,337 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:42:00,337 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:42:00,345 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:00" (1/1) ... [2023-11-26 10:42:00,356 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:00" (1/1) ... [2023-11-26 10:42:00,397 INFO L138 Inliner]: procedures = 27, calls = 84, calls flagged for inlining = 23, calls inlined = 29, statements flattened = 410 [2023-11-26 10:42:00,398 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:42:00,399 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:42:00,399 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:42:00,399 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:42:00,415 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:00" (1/1) ... [2023-11-26 10:42:00,421 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:00" (1/1) ... [2023-11-26 10:42:00,427 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:00" (1/1) ... [2023-11-26 10:42:00,469 INFO L175 MemorySlicer]: Split 20 memory accesses to 6 slices as follows [2, 2, 2, 2, 10, 2]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0]. The 7 writes are split as follows [0, 1, 1, 1, 3, 1]. [2023-11-26 10:42:00,470 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:00" (1/1) ... [2023-11-26 10:42:00,470 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:00" (1/1) ... [2023-11-26 10:42:00,495 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:00" (1/1) ... [2023-11-26 10:42:00,511 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:00" (1/1) ... [2023-11-26 10:42:00,526 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:00" (1/1) ... [2023-11-26 10:42:00,530 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:00" (1/1) ... [2023-11-26 10:42:00,535 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:42:00,536 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:42:00,537 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:42:00,538 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:42:00,547 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:00" (1/1) ... [2023-11-26 10:42:00,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:42:00,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ef6f80-dc68-48e1-9a04-4319f74a7e04/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:42:00,584 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ef6f80-dc68-48e1-9a04-4319f74a7e04/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:42:00,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ef6f80-dc68-48e1-9a04-4319f74a7e04/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:42:00,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:42:00,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 10:42:00,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 10:42:00,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 10:42:00,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 10:42:00,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 10:42:00,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-26 10:42:00,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-26 10:42:00,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 10:42:00,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 10:42:00,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 10:42:00,644 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-26 10:42:00,644 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-26 10:42:00,644 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-26 10:42:00,644 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-26 10:42:00,644 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-26 10:42:00,645 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-26 10:42:00,645 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-26 10:42:00,647 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-26 10:42:00,647 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-26 10:42:00,647 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-26 10:42:00,647 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-26 10:42:00,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 10:42:00,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 10:42:00,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 10:42:00,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 10:42:00,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 10:42:00,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-26 10:42:00,650 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-26 10:42:00,650 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-26 10:42:00,651 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 10:42:00,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:42:00,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:42:00,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 10:42:00,654 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 10:42:00,894 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:42:00,896 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:42:01,720 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:42:02,587 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:42:02,588 INFO L309 CfgBuilder]: Removed 7 assume(true) statements. [2023-11-26 10:42:02,589 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:42:02 BoogieIcfgContainer [2023-11-26 10:42:02,589 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:42:02,593 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:42:02,593 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:42:02,597 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:42:02,597 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:41:59" (1/3) ... [2023-11-26 10:42:02,598 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d5d3275 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:42:02, skipping insertion in model container [2023-11-26 10:42:02,599 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:00" (2/3) ... [2023-11-26 10:42:02,601 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d5d3275 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:42:02, skipping insertion in model container [2023-11-26 10:42:02,601 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:42:02" (3/3) ... [2023-11-26 10:42:02,603 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-series2.wvr.c [2023-11-26 10:42:02,615 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 10:42:02,629 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:42:02,629 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2023-11-26 10:42:02,630 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 10:42:02,822 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-26 10:42:02,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 89 transitions, 206 flow [2023-11-26 10:42:02,914 INFO L124 PetriNetUnfolderBase]: 7/85 cut-off events. [2023-11-26 10:42:02,914 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-26 10:42:02,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 85 events. 7/85 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 255 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2023-11-26 10:42:02,919 INFO L82 GeneralOperation]: Start removeDead. Operand has 95 places, 89 transitions, 206 flow [2023-11-26 10:42:02,925 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 89 places, 83 transitions, 187 flow [2023-11-26 10:42:02,936 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:42:02,943 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;@24d04a9b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:42:02,944 INFO L358 AbstractCegarLoop]: Starting to check reachability of 62 error locations. [2023-11-26 10:42:02,948 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 10:42:02,948 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-26 10:42:02,949 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 10:42:02,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:42:02,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-26 10:42:02,951 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-11-26 10:42:02,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:02,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1274431, now seen corresponding path program 1 times [2023-11-26 10:42:02,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:42:02,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434348966] [2023-11-26 10:42:02,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:02,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:42:03,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:03,478 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 10:42:03,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:42:03,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434348966] [2023-11-26 10:42:03,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434348966] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:42:03,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:42:03,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:42:03,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69409184] [2023-11-26 10:42:03,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:42:03,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:42:03,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:42:03,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:42:03,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:42:03,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 89 [2023-11-26 10:42:03,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 83 transitions, 187 flow. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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 10:42:03,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:42:03,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 89 [2023-11-26 10:42:03,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:42:09,610 INFO L124 PetriNetUnfolderBase]: 14887/21042 cut-off events. [2023-11-26 10:42:09,610 INFO L125 PetriNetUnfolderBase]: For 456/456 co-relation queries the response was YES. [2023-11-26 10:42:09,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41988 conditions, 21042 events. 14887/21042 cut-off events. For 456/456 co-relation queries the response was YES. Maximal size of possible extension queue 2836. Compared 166485 event pairs, 14605 based on Foata normal form. 3/9838 useless extension candidates. Maximal degree in co-relation 35198. Up to 19925 conditions per place. [2023-11-26 10:42:09,875 INFO L140 encePairwiseOnDemand]: 62/89 looper letters, 52 selfloop transitions, 10 changer transitions 0/81 dead transitions. [2023-11-26 10:42:09,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 81 transitions, 307 flow [2023-11-26 10:42:09,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:42:09,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 10:42:09,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 171 transitions. [2023-11-26 10:42:09,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4803370786516854 [2023-11-26 10:42:09,893 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 171 transitions. [2023-11-26 10:42:09,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 171 transitions. [2023-11-26 10:42:09,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:42:09,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 171 transitions. [2023-11-26 10:42:09,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:42:09,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 89.0) internal successors, (445), 5 states have internal predecessors, (445), 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 10:42:09,912 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 89.0) internal successors, (445), 5 states have internal predecessors, (445), 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 10:42:09,914 INFO L175 Difference]: Start difference. First operand has 89 places, 83 transitions, 187 flow. Second operand 4 states and 171 transitions. [2023-11-26 10:42:09,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 81 transitions, 307 flow [2023-11-26 10:42:09,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 81 transitions, 294 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-11-26 10:42:09,987 INFO L231 Difference]: Finished difference. Result has 77 places, 81 transitions, 240 flow [2023-11-26 10:42:09,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=240, PETRI_PLACES=77, PETRI_TRANSITIONS=81} [2023-11-26 10:42:09,995 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, -12 predicate places. [2023-11-26 10:42:09,995 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 81 transitions, 240 flow [2023-11-26 10:42:09,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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 10:42:09,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:42:09,996 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-26 10:42:09,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 10:42:09,998 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-11-26 10:42:09,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:09,999 INFO L85 PathProgramCache]: Analyzing trace with hash -686838092, now seen corresponding path program 1 times [2023-11-26 10:42:09,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:42:09,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934216496] [2023-11-26 10:42:10,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:10,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:42:10,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:10,244 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 10:42:10,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:42:10,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934216496] [2023-11-26 10:42:10,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934216496] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:42:10,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853387936] [2023-11-26 10:42:10,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:10,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:42:10,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ef6f80-dc68-48e1-9a04-4319f74a7e04/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:42:10,251 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ef6f80-dc68-48e1-9a04-4319f74a7e04/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:42:10,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ef6f80-dc68-48e1-9a04-4319f74a7e04/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 10:42:10,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:10,430 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 10:42:10,435 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:42:10,597 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 10:42:10,598 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:42:10,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853387936] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:42:10,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:42:10,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-26 10:42:10,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19217291] [2023-11-26 10:42:10,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:42:10,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:42:10,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:42:10,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:42:10,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-26 10:42:10,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 89 [2023-11-26 10:42:10,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 81 transitions, 240 flow. Second operand has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 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 10:42:10,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:42:10,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 89 [2023-11-26 10:42:10,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:42:15,234 INFO L124 PetriNetUnfolderBase]: 14887/21039 cut-off events. [2023-11-26 10:42:15,234 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2023-11-26 10:42:15,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41521 conditions, 21039 events. 14887/21039 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 2836. Compared 165838 event pairs, 14605 based on Foata normal form. 3/9840 useless extension candidates. Maximal degree in co-relation 41448. Up to 19910 conditions per place. [2023-11-26 10:42:15,441 INFO L140 encePairwiseOnDemand]: 76/89 looper letters, 42 selfloop transitions, 17 changer transitions 0/78 dead transitions. [2023-11-26 10:42:15,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 78 transitions, 346 flow [2023-11-26 10:42:15,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 10:42:15,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 10:42:15,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 200 transitions. [2023-11-26 10:42:15,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37453183520599254 [2023-11-26 10:42:15,448 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 200 transitions. [2023-11-26 10:42:15,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 200 transitions. [2023-11-26 10:42:15,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:42:15,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 200 transitions. [2023-11-26 10:42:15,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 33.333333333333336) internal successors, (200), 6 states have internal predecessors, (200), 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 10:42:15,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 89.0) internal successors, (623), 7 states have internal predecessors, (623), 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 10:42:15,457 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 89.0) internal successors, (623), 7 states have internal predecessors, (623), 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 10:42:15,457 INFO L175 Difference]: Start difference. First operand has 77 places, 81 transitions, 240 flow. Second operand 6 states and 200 transitions. [2023-11-26 10:42:15,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 78 transitions, 346 flow [2023-11-26 10:42:15,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 78 transitions, 346 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 10:42:15,464 INFO L231 Difference]: Finished difference. Result has 79 places, 78 transitions, 262 flow [2023-11-26 10:42:15,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=262, PETRI_PLACES=79, PETRI_TRANSITIONS=78} [2023-11-26 10:42:15,466 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, -10 predicate places. [2023-11-26 10:42:15,467 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 78 transitions, 262 flow [2023-11-26 10:42:15,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 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 10:42:15,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:42:15,467 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-26 10:42:15,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ef6f80-dc68-48e1-9a04-4319f74a7e04/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 10:42:15,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ef6f80-dc68-48e1-9a04-4319f74a7e04/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:42:15,685 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-11-26 10:42:15,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:15,686 INFO L85 PathProgramCache]: Analyzing trace with hash 182856932, now seen corresponding path program 1 times [2023-11-26 10:42:15,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:42:15,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012411556] [2023-11-26 10:42:15,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:15,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:42:15,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:15,851 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 10:42:15,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:42:15,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012411556] [2023-11-26 10:42:15,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012411556] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:42:15,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37750952] [2023-11-26 10:42:15,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:15,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:42:15,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ef6f80-dc68-48e1-9a04-4319f74a7e04/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:42:15,854 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ef6f80-dc68-48e1-9a04-4319f74a7e04/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:42:15,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ef6f80-dc68-48e1-9a04-4319f74a7e04/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 10:42:16,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:16,011 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 10:42:16,013 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:42:16,044 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 10:42:16,044 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:42:16,091 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 10:42:16,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37750952] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:42:16,092 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:42:16,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-26 10:42:16,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431847602] [2023-11-26 10:42:16,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:42:16,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-26 10:42:16,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:42:16,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-26 10:42:16,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-26 10:42:16,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 89 [2023-11-26 10:42:16,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 78 transitions, 262 flow. Second operand has 12 states, 12 states have (on average 24.083333333333332) internal successors, (289), 12 states have internal predecessors, (289), 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 10:42:16,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:42:16,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 89 [2023-11-26 10:42:16,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:42:20,468 INFO L124 PetriNetUnfolderBase]: 14896/21075 cut-off events. [2023-11-26 10:42:20,469 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2023-11-26 10:42:20,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41662 conditions, 21075 events. 14896/21075 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 2836. Compared 166573 event pairs, 14605 based on Foata normal form. 9/9882 useless extension candidates. Maximal degree in co-relation 41450. Up to 19925 conditions per place. [2023-11-26 10:42:20,675 INFO L140 encePairwiseOnDemand]: 76/89 looper letters, 49 selfloop transitions, 37 changer transitions 0/105 dead transitions. [2023-11-26 10:42:20,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 105 transitions, 608 flow [2023-11-26 10:42:20,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 10:42:20,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-26 10:42:20,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 325 transitions. [2023-11-26 10:42:20,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3651685393258427 [2023-11-26 10:42:20,680 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 325 transitions. [2023-11-26 10:42:20,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 325 transitions. [2023-11-26 10:42:20,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:42:20,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 325 transitions. [2023-11-26 10:42:20,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 32.5) internal successors, (325), 10 states have internal predecessors, (325), 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 10:42:20,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 89.0) internal successors, (979), 11 states have internal predecessors, (979), 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 10:42:20,687 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 89.0) internal successors, (979), 11 states have internal predecessors, (979), 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 10:42:20,688 INFO L175 Difference]: Start difference. First operand has 79 places, 78 transitions, 262 flow. Second operand 10 states and 325 transitions. [2023-11-26 10:42:20,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 105 transitions, 608 flow [2023-11-26 10:42:20,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 105 transitions, 525 flow, removed 16 selfloop flow, removed 5 redundant places. [2023-11-26 10:42:20,696 INFO L231 Difference]: Finished difference. Result has 86 places, 105 transitions, 477 flow [2023-11-26 10:42:20,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=477, PETRI_PLACES=86, PETRI_TRANSITIONS=105} [2023-11-26 10:42:20,699 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, -3 predicate places. [2023-11-26 10:42:20,699 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 105 transitions, 477 flow [2023-11-26 10:42:20,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 24.083333333333332) internal successors, (289), 12 states have internal predecessors, (289), 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 10:42:20,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:42:20,700 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:42:20,714 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ef6f80-dc68-48e1-9a04-4319f74a7e04/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-26 10:42:20,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ef6f80-dc68-48e1-9a04-4319f74a7e04/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:42:20,907 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-11-26 10:42:20,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:20,909 INFO L85 PathProgramCache]: Analyzing trace with hash -111006861, now seen corresponding path program 1 times [2023-11-26 10:42:20,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:42:20,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580980041] [2023-11-26 10:42:20,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:20,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:42:20,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:21,056 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 10:42:21,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:42:21,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580980041] [2023-11-26 10:42:21,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580980041] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:42:21,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:42:21,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 10:42:21,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647145257] [2023-11-26 10:42:21,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:42:21,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:42:21,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:42:21,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:42:21,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:42:21,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 89 [2023-11-26 10:42:21,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 105 transitions, 477 flow. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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 10:42:21,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:42:21,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 89 [2023-11-26 10:42:21,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:42:26,085 INFO L124 PetriNetUnfolderBase]: 20482/29712 cut-off events. [2023-11-26 10:42:26,085 INFO L125 PetriNetUnfolderBase]: For 115/115 co-relation queries the response was YES. [2023-11-26 10:42:26,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57963 conditions, 29712 events. 20482/29712 cut-off events. For 115/115 co-relation queries the response was YES. Maximal size of possible extension queue 3298. Compared 240947 event pairs, 6649 based on Foata normal form. 0/15890 useless extension candidates. Maximal degree in co-relation 57865. Up to 18133 conditions per place. [2023-11-26 10:42:26,318 INFO L140 encePairwiseOnDemand]: 85/89 looper letters, 115 selfloop transitions, 2 changer transitions 0/139 dead transitions. [2023-11-26 10:42:26,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 139 transitions, 786 flow [2023-11-26 10:42:26,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:42:26,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 10:42:26,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 170 transitions. [2023-11-26 10:42:26,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6367041198501873 [2023-11-26 10:42:26,320 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 170 transitions. [2023-11-26 10:42:26,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 170 transitions. [2023-11-26 10:42:26,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:42:26,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 170 transitions. [2023-11-26 10:42:26,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 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 10:42:26,323 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 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 10:42:26,323 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 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 10:42:26,324 INFO L175 Difference]: Start difference. First operand has 86 places, 105 transitions, 477 flow. Second operand 3 states and 170 transitions. [2023-11-26 10:42:26,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 139 transitions, 786 flow [2023-11-26 10:42:26,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 139 transitions, 749 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-11-26 10:42:26,329 INFO L231 Difference]: Finished difference. Result has 87 places, 106 transitions, 454 flow [2023-11-26 10:42:26,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=454, PETRI_PLACES=87, PETRI_TRANSITIONS=106} [2023-11-26 10:42:26,331 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, -2 predicate places. [2023-11-26 10:42:26,331 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 106 transitions, 454 flow [2023-11-26 10:42:26,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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 10:42:26,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:42:26,332 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:42:26,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 10:42:26,332 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-11-26 10:42:26,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:26,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1516805671, now seen corresponding path program 1 times [2023-11-26 10:42:26,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:42:26,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142682649] [2023-11-26 10:42:26,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:26,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:42:26,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:26,414 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 10:42:26,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:42:26,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142682649] [2023-11-26 10:42:26,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142682649] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:42:26,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:42:26,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 10:42:26,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003114823] [2023-11-26 10:42:26,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:42:26,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:42:26,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:42:26,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:42:26,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:42:26,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 89 [2023-11-26 10:42:26,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 106 transitions, 454 flow. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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 10:42:26,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:42:26,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 89 [2023-11-26 10:42:26,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:42:32,944 INFO L124 PetriNetUnfolderBase]: 29142/41608 cut-off events. [2023-11-26 10:42:32,944 INFO L125 PetriNetUnfolderBase]: For 3054/3054 co-relation queries the response was YES. [2023-11-26 10:42:33,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87055 conditions, 41608 events. 29142/41608 cut-off events. For 3054/3054 co-relation queries the response was YES. Maximal size of possible extension queue 3960. Compared 336873 event pairs, 9417 based on Foata normal form. 0/22921 useless extension candidates. Maximal degree in co-relation 86960. Up to 25057 conditions per place. [2023-11-26 10:42:33,257 INFO L140 encePairwiseOnDemand]: 85/89 looper letters, 115 selfloop transitions, 2 changer transitions 0/139 dead transitions. [2023-11-26 10:42:33,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 139 transitions, 769 flow [2023-11-26 10:42:33,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:42:33,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 10:42:33,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 168 transitions. [2023-11-26 10:42:33,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6292134831460674 [2023-11-26 10:42:33,259 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 168 transitions. [2023-11-26 10:42:33,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 168 transitions. [2023-11-26 10:42:33,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:42:33,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 168 transitions. [2023-11-26 10:42:33,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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 10:42:33,263 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 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 10:42:33,264 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 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 10:42:33,264 INFO L175 Difference]: Start difference. First operand has 87 places, 106 transitions, 454 flow. Second operand 3 states and 168 transitions. [2023-11-26 10:42:33,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 139 transitions, 769 flow [2023-11-26 10:42:33,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 139 transitions, 766 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 10:42:33,277 INFO L231 Difference]: Finished difference. Result has 89 places, 107 transitions, 466 flow [2023-11-26 10:42:33,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=452, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=466, PETRI_PLACES=89, PETRI_TRANSITIONS=107} [2023-11-26 10:42:33,281 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, 0 predicate places. [2023-11-26 10:42:33,281 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 107 transitions, 466 flow [2023-11-26 10:42:33,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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 10:42:33,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:42:33,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:42:33,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 10:42:33,284 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-11-26 10:42:33,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:33,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1516805675, now seen corresponding path program 1 times [2023-11-26 10:42:33,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:42:33,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698815123] [2023-11-26 10:42:33,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:33,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:42:33,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:33,457 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 10:42:33,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:42:33,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698815123] [2023-11-26 10:42:33,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698815123] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:42:33,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:42:33,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:42:33,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033868033] [2023-11-26 10:42:33,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:42:33,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:42:33,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:42:33,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:42:33,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:42:33,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 89 [2023-11-26 10:42:33,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 107 transitions, 466 flow. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 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 10:42:33,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:42:33,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 89 [2023-11-26 10:42:33,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:42:40,860 INFO L124 PetriNetUnfolderBase]: 31177/43377 cut-off events. [2023-11-26 10:42:40,860 INFO L125 PetriNetUnfolderBase]: For 5270/5270 co-relation queries the response was YES. [2023-11-26 10:42:40,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96544 conditions, 43377 events. 31177/43377 cut-off events. For 5270/5270 co-relation queries the response was YES. Maximal size of possible extension queue 3801. Compared 340776 event pairs, 28310 based on Foata normal form. 868/26314 useless extension candidates. Maximal degree in co-relation 96420. Up to 38649 conditions per place. [2023-11-26 10:42:41,211 INFO L140 encePairwiseOnDemand]: 76/89 looper letters, 117 selfloop transitions, 9 changer transitions 2/150 dead transitions. [2023-11-26 10:42:41,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 150 transitions, 887 flow [2023-11-26 10:42:41,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:42:41,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 10:42:41,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 236 transitions. [2023-11-26 10:42:41,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5303370786516854 [2023-11-26 10:42:41,213 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 236 transitions. [2023-11-26 10:42:41,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 236 transitions. [2023-11-26 10:42:41,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:42:41,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 236 transitions. [2023-11-26 10:42:41,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 47.2) internal successors, (236), 5 states have internal predecessors, (236), 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 10:42:41,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 89.0) internal successors, (534), 6 states have internal predecessors, (534), 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 10:42:41,216 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 89.0) internal successors, (534), 6 states have internal predecessors, (534), 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 10:42:41,216 INFO L175 Difference]: Start difference. First operand has 89 places, 107 transitions, 466 flow. Second operand 5 states and 236 transitions. [2023-11-26 10:42:41,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 150 transitions, 887 flow [2023-11-26 10:42:41,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 150 transitions, 885 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 10:42:41,223 INFO L231 Difference]: Finished difference. Result has 94 places, 109 transitions, 519 flow [2023-11-26 10:42:41,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=519, PETRI_PLACES=94, PETRI_TRANSITIONS=109} [2023-11-26 10:42:41,225 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, 5 predicate places. [2023-11-26 10:42:41,225 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 109 transitions, 519 flow [2023-11-26 10:42:41,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 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 10:42:41,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:42:41,226 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:42:41,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 10:42:41,226 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2023-11-26 10:42:41,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:41,227 INFO L85 PathProgramCache]: Analyzing trace with hash 120783055, now seen corresponding path program 1 times [2023-11-26 10:42:41,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:42:41,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975960135] [2023-11-26 10:42:41,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:41,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:42:41,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:41,328 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 10:42:41,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:42:41,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975960135] [2023-11-26 10:42:41,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975960135] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:42:41,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014204577] [2023-11-26 10:42:41,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:41,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:42:41,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ef6f80-dc68-48e1-9a04-4319f74a7e04/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:42:41,331 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ef6f80-dc68-48e1-9a04-4319f74a7e04/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:42:41,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ef6f80-dc68-48e1-9a04-4319f74a7e04/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 10:42:41,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:42:41,515 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 10:42:41,518 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:42:41,566 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 10:42:41,566 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:42:41,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2014204577] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:42:41,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:42:41,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [2] total 5 [2023-11-26 10:42:41,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587935780] [2023-11-26 10:42:41,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:42:41,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:42:41,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:42:41,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:42:41,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:42:41,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 89 [2023-11-26 10:42:41,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 109 transitions, 519 flow. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 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 10:42:41,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:42:41,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 89 [2023-11-26 10:42:41,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand