./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-multiply-verify.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_2d6896e3-0b22-4548-a49c-618ba6670d56/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6896e3-0b22-4548-a49c-618ba6670d56/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_2d6896e3-0b22-4548-a49c-618ba6670d56/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6896e3-0b22-4548-a49c-618ba6670d56/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6896e3-0b22-4548-a49c-618ba6670d56/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_2d6896e3-0b22-4548-a49c-618ba6670d56/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 d79cb5dae664e13779624ff0ffbc531b419f89e2c7510a92e890992a52ee7c98 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:53:46,455 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:53:46,540 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6896e3-0b22-4548-a49c-618ba6670d56/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-26 11:53:46,547 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:53:46,548 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:53:46,577 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:53:46,577 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:53:46,578 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:53:46,579 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:53:46,580 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:53:46,580 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:53:46,581 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:53:46,582 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:53:46,583 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:53:46,583 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:53:46,584 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:53:46,585 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:53:46,585 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:53:46,586 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:53:46,586 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:53:46,587 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:53:46,587 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:53:46,588 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:53:46,588 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:53:46,589 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 11:53:46,589 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:53:46,590 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:53:46,590 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:53:46,591 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:53:46,591 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:53:46,592 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:53:46,592 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:53:46,593 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:53:46,593 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:53:46,594 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:53:46,594 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:53:46,594 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:53:46,595 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:53:46,595 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:53:46,596 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:53:46,596 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:53:46,597 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:53:46,597 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:53:46,598 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:53:46,598 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_2d6896e3-0b22-4548-a49c-618ba6670d56/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6896e3-0b22-4548-a49c-618ba6670d56/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d79cb5dae664e13779624ff0ffbc531b419f89e2c7510a92e890992a52ee7c98 [2023-11-26 11:53:46,987 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:53:47,028 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:53:47,031 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:53:47,033 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:53:47,033 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:53:47,035 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6896e3-0b22-4548-a49c-618ba6670d56/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c [2023-11-26 11:53:50,472 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:53:50,759 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:53:50,760 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6896e3-0b22-4548-a49c-618ba6670d56/sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c [2023-11-26 11:53:50,771 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6896e3-0b22-4548-a49c-618ba6670d56/bin/uautomizer-verify-VRDe98Ueme/data/dffbb6f0c/3258ae403978483c9adde93c4ec2aef8/FLAGf06a6688a [2023-11-26 11:53:50,787 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6896e3-0b22-4548-a49c-618ba6670d56/bin/uautomizer-verify-VRDe98Ueme/data/dffbb6f0c/3258ae403978483c9adde93c4ec2aef8 [2023-11-26 11:53:50,791 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:53:50,792 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:53:50,794 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:53:50,794 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:53:50,801 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:53:50,802 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:53:50" (1/1) ... [2023-11-26 11:53:50,803 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c1d59ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:50, skipping insertion in model container [2023-11-26 11:53:50,803 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:53:50" (1/1) ... [2023-11-26 11:53:50,836 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:53:51,134 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:53:51,148 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:53:51,186 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:53:51,197 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:53:51,197 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:53:51,207 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:53:51,208 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:51 WrapperNode [2023-11-26 11:53:51,208 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:53:51,210 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:53:51,210 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:53:51,210 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:53:51,220 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:51" (1/1) ... [2023-11-26 11:53:51,231 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:51" (1/1) ... [2023-11-26 11:53:51,274 INFO L138 Inliner]: procedures = 26, calls = 51, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 207 [2023-11-26 11:53:51,276 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:53:51,277 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:53:51,278 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:53:51,278 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:53:51,297 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:51" (1/1) ... [2023-11-26 11:53:51,298 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:51" (1/1) ... [2023-11-26 11:53:51,302 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:51" (1/1) ... [2023-11-26 11:53:51,324 INFO L175 MemorySlicer]: Split 13 memory accesses to 5 slices as follows [2, 2, 2, 5, 2]. 38 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 11:53:51,324 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:51" (1/1) ... [2023-11-26 11:53:51,334 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:51" (1/1) ... [2023-11-26 11:53:51,346 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:51" (1/1) ... [2023-11-26 11:53:51,351 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:51" (1/1) ... [2023-11-26 11:53:51,354 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:51" (1/1) ... [2023-11-26 11:53:51,357 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:51" (1/1) ... [2023-11-26 11:53:51,362 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:53:51,363 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:53:51,364 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:53:51,364 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:53:51,365 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:51" (1/1) ... [2023-11-26 11:53:51,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:53:51,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6896e3-0b22-4548-a49c-618ba6670d56/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:53:51,404 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6896e3-0b22-4548-a49c-618ba6670d56/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:53:51,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6896e3-0b22-4548-a49c-618ba6670d56/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:53:51,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:53:51,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:53:51,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 11:53:51,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 11:53:51,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 11:53:51,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 11:53:51,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-26 11:53:51,454 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 11:53:51,454 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 11:53:51,454 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 11:53:51,454 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-26 11:53:51,454 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-26 11:53:51,455 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-26 11:53:51,455 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-26 11:53:51,455 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-26 11:53:51,455 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-26 11:53:51,455 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-26 11:53:51,455 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-26 11:53:51,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:53:51,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 11:53:51,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 11:53:51,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 11:53:51,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 11:53:51,457 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-26 11:53:51,457 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-26 11:53:51,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 11:53:51,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:53:51,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:53:51,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:53:51,460 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 11:53:51,623 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:53:51,625 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:53:52,092 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:53:52,557 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:53:52,558 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-26 11:53:52,558 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:53:52 BoogieIcfgContainer [2023-11-26 11:53:52,559 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:53:52,561 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:53:52,562 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:53:52,565 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:53:52,566 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:53:50" (1/3) ... [2023-11-26 11:53:52,566 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d186d56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:53:52, skipping insertion in model container [2023-11-26 11:53:52,567 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:51" (2/3) ... [2023-11-26 11:53:52,568 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d186d56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:53:52, skipping insertion in model container [2023-11-26 11:53:52,569 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:53:52" (3/3) ... [2023-11-26 11:53:52,570 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-multiply-verify.wvr.c [2023-11-26 11:53:52,581 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 11:53:52,592 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:53:52,593 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-11-26 11:53:52,593 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 11:53:52,684 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-26 11:53:52,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 51 transitions, 123 flow [2023-11-26 11:53:52,770 INFO L124 PetriNetUnfolderBase]: 3/48 cut-off events. [2023-11-26 11:53:52,770 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-26 11:53:52,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 48 events. 3/48 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 115 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2023-11-26 11:53:52,778 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 51 transitions, 123 flow [2023-11-26 11:53:52,783 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 46 transitions, 107 flow [2023-11-26 11:53:52,802 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:53:52,811 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;@3dec23c5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:53:52,812 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-11-26 11:53:52,817 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:53:52,818 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-26 11:53:52,818 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:53:52,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:53:52,819 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-26 11:53:52,819 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-26 11:53:52,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:52,826 INFO L85 PathProgramCache]: Analyzing trace with hash 575135, now seen corresponding path program 1 times [2023-11-26 11:53:52,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:53:52,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645506888] [2023-11-26 11:53:52,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:52,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:53:52,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:53,283 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 11:53:53,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:53:53,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645506888] [2023-11-26 11:53:53,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645506888] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:53:53,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:53:53,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:53:53,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670083945] [2023-11-26 11:53:53,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:53:53,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:53:53,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:53:53,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:53:53,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:53:53,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2023-11-26 11:53:53,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 46 transitions, 107 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 11:53:53,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:53:53,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2023-11-26 11:53:53,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:53:53,967 INFO L124 PetriNetUnfolderBase]: 1309/2003 cut-off events. [2023-11-26 11:53:53,969 INFO L125 PetriNetUnfolderBase]: For 89/89 co-relation queries the response was YES. [2023-11-26 11:53:53,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4052 conditions, 2003 events. 1309/2003 cut-off events. For 89/89 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 10437 event pairs, 1125 based on Foata normal form. 1/1471 useless extension candidates. Maximal degree in co-relation 3529. Up to 1915 conditions per place. [2023-11-26 11:53:54,000 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 32 selfloop transitions, 4 changer transitions 0/46 dead transitions. [2023-11-26 11:53:54,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 46 transitions, 179 flow [2023-11-26 11:53:54,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:53:54,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:53:54,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 93 transitions. [2023-11-26 11:53:54,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45588235294117646 [2023-11-26 11:53:54,019 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 93 transitions. [2023-11-26 11:53:54,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 93 transitions. [2023-11-26 11:53:54,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:53:54,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 93 transitions. [2023-11-26 11:53:54,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 23.25) internal successors, (93), 4 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 11:53:54,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 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 11:53:54,037 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 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 11:53:54,039 INFO L175 Difference]: Start difference. First operand has 53 places, 46 transitions, 107 flow. Second operand 4 states and 93 transitions. [2023-11-26 11:53:54,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 46 transitions, 179 flow [2023-11-26 11:53:54,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 46 transitions, 170 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-26 11:53:54,059 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 121 flow [2023-11-26 11:53:54,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=121, PETRI_PLACES=50, PETRI_TRANSITIONS=46} [2023-11-26 11:53:54,068 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -3 predicate places. [2023-11-26 11:53:54,068 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 121 flow [2023-11-26 11:53:54,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 11:53:54,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:53:54,070 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-26 11:53:54,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:53:54,071 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-26 11:53:54,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:54,073 INFO L85 PathProgramCache]: Analyzing trace with hash -45443420, now seen corresponding path program 1 times [2023-11-26 11:53:54,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:53:54,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056886919] [2023-11-26 11:53:54,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:54,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:53:54,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:54,272 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 11:53:54,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:53:54,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056886919] [2023-11-26 11:53:54,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056886919] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:53:54,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091910861] [2023-11-26 11:53:54,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:54,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:53:54,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6896e3-0b22-4548-a49c-618ba6670d56/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:53:54,278 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6896e3-0b22-4548-a49c-618ba6670d56/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:53:54,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6896e3-0b22-4548-a49c-618ba6670d56/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:53:54,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:54,424 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:53:54,429 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:53:54,511 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 11:53:54,512 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:53:54,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091910861] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:53:54,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:53:54,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-26 11:53:54,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154624919] [2023-11-26 11:53:54,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:53:54,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:53:54,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:53:54,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:53:54,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:53:54,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2023-11-26 11:53:54,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 121 flow. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 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 11:53:54,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:53:54,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2023-11-26 11:53:54,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:53:55,127 INFO L124 PetriNetUnfolderBase]: 1309/2002 cut-off events. [2023-11-26 11:53:55,133 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-26 11:53:55,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4012 conditions, 2002 events. 1309/2002 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 10409 event pairs, 1125 based on Foata normal form. 1/1471 useless extension candidates. Maximal degree in co-relation 3985. Up to 1910 conditions per place. [2023-11-26 11:53:55,157 INFO L140 encePairwiseOnDemand]: 46/51 looper letters, 28 selfloop transitions, 7 changer transitions 0/45 dead transitions. [2023-11-26 11:53:55,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 45 transitions, 187 flow [2023-11-26 11:53:55,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:53:55,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 11:53:55,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 114 transitions. [2023-11-26 11:53:55,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37254901960784315 [2023-11-26 11:53:55,164 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 114 transitions. [2023-11-26 11:53:55,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 114 transitions. [2023-11-26 11:53:55,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:53:55,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 114 transitions. [2023-11-26 11:53:55,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 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 11:53:55,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 51.0) internal successors, (357), 7 states have internal predecessors, (357), 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 11:53:55,172 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 51.0) internal successors, (357), 7 states have internal predecessors, (357), 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 11:53:55,173 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 121 flow. Second operand 6 states and 114 transitions. [2023-11-26 11:53:55,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 45 transitions, 187 flow [2023-11-26 11:53:55,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 45 transitions, 184 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:53:55,178 INFO L231 Difference]: Finished difference. Result has 53 places, 45 transitions, 128 flow [2023-11-26 11:53:55,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=128, PETRI_PLACES=53, PETRI_TRANSITIONS=45} [2023-11-26 11:53:55,182 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 0 predicate places. [2023-11-26 11:53:55,182 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 45 transitions, 128 flow [2023-11-26 11:53:55,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 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 11:53:55,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:53:55,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-26 11:53:55,204 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6896e3-0b22-4548-a49c-618ba6670d56/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 11:53:55,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6896e3-0b22-4548-a49c-618ba6670d56/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:53:55,391 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-26 11:53:55,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:55,391 INFO L85 PathProgramCache]: Analyzing trace with hash -42768181, now seen corresponding path program 1 times [2023-11-26 11:53:55,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:53:55,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791948754] [2023-11-26 11:53:55,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:55,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:53:55,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:55,596 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 11:53:55,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:53:55,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791948754] [2023-11-26 11:53:55,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791948754] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:53:55,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:53:55,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:53:55,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274420254] [2023-11-26 11:53:55,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:53:55,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:53:55,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:53:55,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:53:55,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:53:55,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 51 [2023-11-26 11:53:55,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 45 transitions, 128 flow. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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 11:53:55,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:53:55,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 51 [2023-11-26 11:53:55,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:53:55,993 INFO L124 PetriNetUnfolderBase]: 1344/2111 cut-off events. [2023-11-26 11:53:55,994 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-11-26 11:53:55,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4225 conditions, 2111 events. 1344/2111 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 10806 event pairs, 1038 based on Foata normal form. 52/1664 useless extension candidates. Maximal degree in co-relation 3805. Up to 1620 conditions per place. [2023-11-26 11:53:56,013 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 49 selfloop transitions, 4 changer transitions 0/64 dead transitions. [2023-11-26 11:53:56,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 64 transitions, 278 flow [2023-11-26 11:53:56,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:53:56,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:53:56,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 120 transitions. [2023-11-26 11:53:56,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5882352941176471 [2023-11-26 11:53:56,016 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 120 transitions. [2023-11-26 11:53:56,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 120 transitions. [2023-11-26 11:53:56,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:53:56,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 120 transitions. [2023-11-26 11:53:56,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 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 11:53:56,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 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 11:53:56,019 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 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 11:53:56,019 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 128 flow. Second operand 4 states and 120 transitions. [2023-11-26 11:53:56,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 64 transitions, 278 flow [2023-11-26 11:53:56,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 64 transitions, 256 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-11-26 11:53:56,023 INFO L231 Difference]: Finished difference. Result has 53 places, 46 transitions, 137 flow [2023-11-26 11:53:56,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=137, PETRI_PLACES=53, PETRI_TRANSITIONS=46} [2023-11-26 11:53:56,024 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 0 predicate places. [2023-11-26 11:53:56,024 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 46 transitions, 137 flow [2023-11-26 11:53:56,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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 11:53:56,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:53:56,025 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-26 11:53:56,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 11:53:56,026 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-26 11:53:56,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:56,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1408745437, now seen corresponding path program 1 times [2023-11-26 11:53:56,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:53:56,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753179105] [2023-11-26 11:53:56,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:56,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:53:56,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:56,165 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 11:53:56,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:53:56,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753179105] [2023-11-26 11:53:56,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753179105] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:53:56,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691769554] [2023-11-26 11:53:56,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:56,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:53:56,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6896e3-0b22-4548-a49c-618ba6670d56/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:53:56,168 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6896e3-0b22-4548-a49c-618ba6670d56/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:53:56,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6896e3-0b22-4548-a49c-618ba6670d56/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 11:53:56,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:56,278 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:53:56,279 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:53:56,309 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 11:53:56,309 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:53:56,360 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 11:53:56,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691769554] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:53:56,361 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:53:56,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-26 11:53:56,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553361798] [2023-11-26 11:53:56,362 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:53:56,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-26 11:53:56,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:53:56,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-26 11:53:56,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-26 11:53:56,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2023-11-26 11:53:56,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 46 transitions, 137 flow. Second operand has 12 states, 12 states have (on average 14.083333333333334) internal successors, (169), 12 states have internal predecessors, (169), 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 11:53:56,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:53:56,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2023-11-26 11:53:56,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:53:56,878 INFO L124 PetriNetUnfolderBase]: 1347/2081 cut-off events. [2023-11-26 11:53:56,878 INFO L125 PetriNetUnfolderBase]: For 378/378 co-relation queries the response was YES. [2023-11-26 11:53:56,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4964 conditions, 2081 events. 1347/2081 cut-off events. For 378/378 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 10567 event pairs, 1117 based on Foata normal form. 3/1678 useless extension candidates. Maximal degree in co-relation 4502. Up to 1995 conditions per place. [2023-11-26 11:53:56,904 INFO L140 encePairwiseOnDemand]: 46/51 looper letters, 32 selfloop transitions, 13 changer transitions 0/55 dead transitions. [2023-11-26 11:53:56,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 55 transitions, 257 flow [2023-11-26 11:53:56,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 11:53:56,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-26 11:53:56,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 177 transitions. [2023-11-26 11:53:56,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34705882352941175 [2023-11-26 11:53:56,907 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 177 transitions. [2023-11-26 11:53:56,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 177 transitions. [2023-11-26 11:53:56,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:53:56,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 177 transitions. [2023-11-26 11:53:56,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 17.7) internal successors, (177), 10 states have internal predecessors, (177), 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 11:53:56,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 51.0) internal successors, (561), 11 states have internal predecessors, (561), 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 11:53:56,913 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 51.0) internal successors, (561), 11 states have internal predecessors, (561), 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 11:53:56,913 INFO L175 Difference]: Start difference. First operand has 53 places, 46 transitions, 137 flow. Second operand 10 states and 177 transitions. [2023-11-26 11:53:56,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 55 transitions, 257 flow [2023-11-26 11:53:56,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 55 transitions, 254 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:53:56,917 INFO L231 Difference]: Finished difference. Result has 64 places, 55 transitions, 208 flow [2023-11-26 11:53:56,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=208, PETRI_PLACES=64, PETRI_TRANSITIONS=55} [2023-11-26 11:53:56,919 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 11 predicate places. [2023-11-26 11:53:56,919 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 55 transitions, 208 flow [2023-11-26 11:53:56,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.083333333333334) internal successors, (169), 12 states have internal predecessors, (169), 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 11:53:56,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:53:56,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:53:56,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6896e3-0b22-4548-a49c-618ba6670d56/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 11:53:57,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6896e3-0b22-4548-a49c-618ba6670d56/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:53:57,143 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-26 11:53:57,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:57,144 INFO L85 PathProgramCache]: Analyzing trace with hash -886972762, now seen corresponding path program 1 times [2023-11-26 11:53:57,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:53:57,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926793686] [2023-11-26 11:53:57,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:57,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:53:57,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:57,307 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:53:57,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:53:57,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926793686] [2023-11-26 11:53:57,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926793686] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:53:57,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964820659] [2023-11-26 11:53:57,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:57,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:53:57,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6896e3-0b22-4548-a49c-618ba6670d56/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:53:57,311 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6896e3-0b22-4548-a49c-618ba6670d56/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:53:57,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6896e3-0b22-4548-a49c-618ba6670d56/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 11:53:57,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:57,448 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:53:57,450 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:53:57,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 11:53:57,477 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:53:57,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1964820659] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:53:57,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:53:57,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2023-11-26 11:53:57,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898334624] [2023-11-26 11:53:57,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:53:57,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:53:57,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:53:57,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:53:57,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:53:57,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 51 [2023-11-26 11:53:57,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 55 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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 11:53:57,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:53:57,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 51 [2023-11-26 11:53:57,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:53:57,697 INFO L124 PetriNetUnfolderBase]: 707/1149 cut-off events. [2023-11-26 11:53:57,697 INFO L125 PetriNetUnfolderBase]: For 322/322 co-relation queries the response was YES. [2023-11-26 11:53:57,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2633 conditions, 1149 events. 707/1149 cut-off events. For 322/322 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 5127 event pairs, 549 based on Foata normal form. 0/1091 useless extension candidates. Maximal degree in co-relation 2597. Up to 1069 conditions per place. [2023-11-26 11:53:57,710 INFO L140 encePairwiseOnDemand]: 46/51 looper letters, 38 selfloop transitions, 1 changer transitions 1/51 dead transitions. [2023-11-26 11:53:57,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 51 transitions, 272 flow [2023-11-26 11:53:57,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:53:57,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:53:57,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 76 transitions. [2023-11-26 11:53:57,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49673202614379086 [2023-11-26 11:53:57,712 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 76 transitions. [2023-11-26 11:53:57,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 76 transitions. [2023-11-26 11:53:57,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:53:57,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 76 transitions. [2023-11-26 11:53:57,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:57,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:57,715 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:57,715 INFO L175 Difference]: Start difference. First operand has 64 places, 55 transitions, 208 flow. Second operand 3 states and 76 transitions. [2023-11-26 11:53:57,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 51 transitions, 272 flow [2023-11-26 11:53:57,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 51 transitions, 261 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-26 11:53:57,722 INFO L231 Difference]: Finished difference. Result has 60 places, 50 transitions, 181 flow [2023-11-26 11:53:57,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=181, PETRI_PLACES=60, PETRI_TRANSITIONS=50} [2023-11-26 11:53:57,725 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 7 predicate places. [2023-11-26 11:53:57,726 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 50 transitions, 181 flow [2023-11-26 11:53:57,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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 11:53:57,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:53:57,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:53:57,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6896e3-0b22-4548-a49c-618ba6670d56/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 11:53:57,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6896e3-0b22-4548-a49c-618ba6670d56/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:53:57,934 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-26 11:53:57,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:57,937 INFO L85 PathProgramCache]: Analyzing trace with hash 955144613, now seen corresponding path program 1 times [2023-11-26 11:53:57,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:53:57,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006053733] [2023-11-26 11:53:57,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:57,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:53:57,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:58,071 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 11:53:58,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:53:58,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006053733] [2023-11-26 11:53:58,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006053733] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:53:58,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:53:58,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:53:58,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717068068] [2023-11-26 11:53:58,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:53:58,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:53:58,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:53:58,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:53:58,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:53:58,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 51 [2023-11-26 11:53:58,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 50 transitions, 181 flow. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:58,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:53:58,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 51 [2023-11-26 11:53:58,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:53:58,261 INFO L124 PetriNetUnfolderBase]: 417/735 cut-off events. [2023-11-26 11:53:58,261 INFO L125 PetriNetUnfolderBase]: For 285/285 co-relation queries the response was YES. [2023-11-26 11:53:58,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1638 conditions, 735 events. 417/735 cut-off events. For 285/285 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3057 event pairs, 321 based on Foata normal form. 80/785 useless extension candidates. Maximal degree in co-relation 1624. Up to 644 conditions per place. [2023-11-26 11:53:58,270 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 31 selfloop transitions, 5 changer transitions 1/48 dead transitions. [2023-11-26 11:53:58,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 48 transitions, 245 flow [2023-11-26 11:53:58,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:53:58,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:53:58,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 86 transitions. [2023-11-26 11:53:58,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4215686274509804 [2023-11-26 11:53:58,272 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 86 transitions. [2023-11-26 11:53:58,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 86 transitions. [2023-11-26 11:53:58,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:53:58,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 86 transitions. [2023-11-26 11:53:58,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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 11:53:58,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 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 11:53:58,276 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 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 11:53:58,277 INFO L175 Difference]: Start difference. First operand has 60 places, 50 transitions, 181 flow. Second operand 4 states and 86 transitions. [2023-11-26 11:53:58,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 48 transitions, 245 flow [2023-11-26 11:53:58,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 48 transitions, 240 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-26 11:53:58,282 INFO L231 Difference]: Finished difference. Result has 58 places, 47 transitions, 171 flow [2023-11-26 11:53:58,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=171, PETRI_PLACES=58, PETRI_TRANSITIONS=47} [2023-11-26 11:53:58,286 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 5 predicate places. [2023-11-26 11:53:58,287 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 47 transitions, 171 flow [2023-11-26 11:53:58,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:58,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:53:58,288 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:53:58,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 11:53:58,288 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-26 11:53:58,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:58,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1653004687, now seen corresponding path program 1 times [2023-11-26 11:53:58,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:53:58,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298066904] [2023-11-26 11:53:58,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:58,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:53:58,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:58,355 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 11:53:58,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:53:58,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298066904] [2023-11-26 11:53:58,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298066904] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:53:58,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:53:58,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:53:58,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473479354] [2023-11-26 11:53:58,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:53:58,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:53:58,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:53:58,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:53:58,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:53:58,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2023-11-26 11:53:58,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 47 transitions, 171 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 11:53:58,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:53:58,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2023-11-26 11:53:58,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:53:58,550 INFO L124 PetriNetUnfolderBase]: 494/803 cut-off events. [2023-11-26 11:53:58,550 INFO L125 PetriNetUnfolderBase]: For 151/160 co-relation queries the response was YES. [2023-11-26 11:53:58,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1802 conditions, 803 events. 494/803 cut-off events. For 151/160 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3390 event pairs, 402 based on Foata normal form. 43/796 useless extension candidates. Maximal degree in co-relation 1789. Up to 751 conditions per place. [2023-11-26 11:53:58,558 INFO L140 encePairwiseOnDemand]: 49/51 looper letters, 36 selfloop transitions, 1 changer transitions 0/46 dead transitions. [2023-11-26 11:53:58,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 46 transitions, 243 flow [2023-11-26 11:53:58,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:53:58,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:53:58,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 66 transitions. [2023-11-26 11:53:58,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43137254901960786 [2023-11-26 11:53:58,560 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 66 transitions. [2023-11-26 11:53:58,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 66 transitions. [2023-11-26 11:53:58,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:53:58,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 66 transitions. [2023-11-26 11:53:58,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 11:53:58,562 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:58,563 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:58,563 INFO L175 Difference]: Start difference. First operand has 58 places, 47 transitions, 171 flow. Second operand 3 states and 66 transitions. [2023-11-26 11:53:58,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 46 transitions, 243 flow [2023-11-26 11:53:58,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 46 transitions, 237 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:53:58,567 INFO L231 Difference]: Finished difference. Result has 56 places, 46 transitions, 165 flow [2023-11-26 11:53:58,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=165, PETRI_PLACES=56, PETRI_TRANSITIONS=46} [2023-11-26 11:53:58,568 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 3 predicate places. [2023-11-26 11:53:58,568 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 46 transitions, 165 flow [2023-11-26 11:53:58,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 11:53:58,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:53:58,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:53:58,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 11:53:58,569 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-26 11:53:58,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:58,570 INFO L85 PathProgramCache]: Analyzing trace with hash -296461620, now seen corresponding path program 1 times [2023-11-26 11:53:58,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:53:58,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939047505] [2023-11-26 11:53:58,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:58,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:53:58,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:58,651 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 11:53:58,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:53:58,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939047505] [2023-11-26 11:53:58,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939047505] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:53:58,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:53:58,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:53:58,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99060393] [2023-11-26 11:53:58,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:53:58,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:53:58,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:53:58,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:53:58,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:53:58,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 51 [2023-11-26 11:53:58,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 46 transitions, 165 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 11:53:58,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:53:58,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 51 [2023-11-26 11:53:58,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:53:58,788 INFO L124 PetriNetUnfolderBase]: 290/588 cut-off events. [2023-11-26 11:53:58,788 INFO L125 PetriNetUnfolderBase]: For 110/124 co-relation queries the response was YES. [2023-11-26 11:53:58,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1251 conditions, 588 events. 290/588 cut-off events. For 110/124 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2685 event pairs, 96 based on Foata normal form. 18/593 useless extension candidates. Maximal degree in co-relation 1238. Up to 341 conditions per place. [2023-11-26 11:53:58,793 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 46 selfloop transitions, 3 changer transitions 0/59 dead transitions. [2023-11-26 11:53:58,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 59 transitions, 296 flow [2023-11-26 11:53:58,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:53:58,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:53:58,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2023-11-26 11:53:58,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5490196078431373 [2023-11-26 11:53:58,796 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 84 transitions. [2023-11-26 11:53:58,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 84 transitions. [2023-11-26 11:53:58,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:53:58,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 84 transitions. [2023-11-26 11:53:58,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 11:53:58,797 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:58,798 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:53:58,798 INFO L175 Difference]: Start difference. First operand has 56 places, 46 transitions, 165 flow. Second operand 3 states and 84 transitions. [2023-11-26 11:53:58,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 59 transitions, 296 flow [2023-11-26 11:53:58,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 59 transitions, 295 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:53:58,803 INFO L231 Difference]: Finished difference. Result has 58 places, 48 transitions, 187 flow [2023-11-26 11:53:58,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=187, PETRI_PLACES=58, PETRI_TRANSITIONS=48} [2023-11-26 11:53:58,806 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 5 predicate places. [2023-11-26 11:53:58,806 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 48 transitions, 187 flow [2023-11-26 11:53:58,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 11:53:58,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:53:58,806 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2023-11-26 11:53:58,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 11:53:58,808 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-26 11:53:58,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:58,809 INFO L85 PathProgramCache]: Analyzing trace with hash 827843528, now seen corresponding path program 2 times [2023-11-26 11:53:58,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:53:58,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961155014] [2023-11-26 11:53:58,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:58,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:53:58,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:59,011 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 11:53:59,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:53:59,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961155014] [2023-11-26 11:53:59,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961155014] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:53:59,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165983913] [2023-11-26 11:53:59,014 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 11:53:59,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:53:59,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6896e3-0b22-4548-a49c-618ba6670d56/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:53:59,017 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6896e3-0b22-4548-a49c-618ba6670d56/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:53:59,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6896e3-0b22-4548-a49c-618ba6670d56/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 11:53:59,123 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-26 11:53:59,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:53:59,125 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 11:53:59,127 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:53:59,187 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 11:53:59,187 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:53:59,240 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 11:53:59,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165983913] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:53:59,241 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:53:59,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2023-11-26 11:53:59,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548915449] [2023-11-26 11:53:59,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:53:59,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-26 11:53:59,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:53:59,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-26 11:53:59,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-11-26 11:53:59,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2023-11-26 11:53:59,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 48 transitions, 187 flow. Second operand has 14 states, 14 states have (on average 14.142857142857142) internal successors, (198), 14 states have internal predecessors, (198), 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 11:53:59,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:53:59,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2023-11-26 11:53:59,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:53:59,598 INFO L124 PetriNetUnfolderBase]: 291/543 cut-off events. [2023-11-26 11:53:59,598 INFO L125 PetriNetUnfolderBase]: For 285/294 co-relation queries the response was YES. [2023-11-26 11:53:59,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1337 conditions, 543 events. 291/543 cut-off events. For 285/294 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2243 event pairs, 220 based on Foata normal form. 2/528 useless extension candidates. Maximal degree in co-relation 1322. Up to 458 conditions per place. [2023-11-26 11:53:59,603 INFO L140 encePairwiseOnDemand]: 46/51 looper letters, 23 selfloop transitions, 18 changer transitions 0/50 dead transitions. [2023-11-26 11:53:59,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 50 transitions, 276 flow [2023-11-26 11:53:59,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-26 11:53:59,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-26 11:53:59,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 223 transitions. [2023-11-26 11:53:59,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3123249299719888 [2023-11-26 11:53:59,606 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 223 transitions. [2023-11-26 11:53:59,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 223 transitions. [2023-11-26 11:53:59,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:53:59,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 223 transitions. [2023-11-26 11:53:59,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 15.928571428571429) internal successors, (223), 14 states have internal predecessors, (223), 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 11:53:59,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 51.0) internal successors, (765), 15 states have internal predecessors, (765), 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 11:53:59,610 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 51.0) internal successors, (765), 15 states have internal predecessors, (765), 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 11:53:59,610 INFO L175 Difference]: Start difference. First operand has 58 places, 48 transitions, 187 flow. Second operand 14 states and 223 transitions. [2023-11-26 11:53:59,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 50 transitions, 276 flow [2023-11-26 11:53:59,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 50 transitions, 251 flow, removed 7 selfloop flow, removed 6 redundant places. [2023-11-26 11:53:59,613 INFO L231 Difference]: Finished difference. Result has 64 places, 50 transitions, 205 flow [2023-11-26 11:53:59,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=205, PETRI_PLACES=64, PETRI_TRANSITIONS=50} [2023-11-26 11:53:59,614 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 11 predicate places. [2023-11-26 11:53:59,614 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 50 transitions, 205 flow [2023-11-26 11:53:59,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 14.142857142857142) internal successors, (198), 14 states have internal predecessors, (198), 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 11:53:59,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:53:59,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:53:59,621 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6896e3-0b22-4548-a49c-618ba6670d56/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-26 11:53:59,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6896e3-0b22-4548-a49c-618ba6670d56/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:53:59,821 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-26 11:53:59,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:59,821 INFO L85 PathProgramCache]: Analyzing trace with hash -194383227, now seen corresponding path program 1 times [2023-11-26 11:53:59,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:53:59,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592600495] [2023-11-26 11:53:59,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:59,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:53:59,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:53:59,882 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 11:53:59,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:53:59,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592600495] [2023-11-26 11:53:59,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592600495] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:53:59,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:53:59,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:53:59,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839836466] [2023-11-26 11:53:59,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:53:59,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:53:59,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:53:59,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:53:59,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:53:59,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2023-11-26 11:53:59,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 50 transitions, 205 flow. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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 11:53:59,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:53:59,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2023-11-26 11:53:59,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:54:00,025 INFO L124 PetriNetUnfolderBase]: 291/586 cut-off events. [2023-11-26 11:54:00,026 INFO L125 PetriNetUnfolderBase]: For 111/114 co-relation queries the response was YES. [2023-11-26 11:54:00,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1263 conditions, 586 events. 291/586 cut-off events. For 111/114 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2540 event pairs, 144 based on Foata normal form. 44/610 useless extension candidates. Maximal degree in co-relation 1252. Up to 337 conditions per place. [2023-11-26 11:54:00,028 INFO L140 encePairwiseOnDemand]: 49/51 looper letters, 0 selfloop transitions, 0 changer transitions 64/64 dead transitions. [2023-11-26 11:54:00,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 64 transitions, 351 flow [2023-11-26 11:54:00,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:54:00,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:54:00,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2023-11-26 11:54:00,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5228758169934641 [2023-11-26 11:54:00,030 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 80 transitions. [2023-11-26 11:54:00,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 80 transitions. [2023-11-26 11:54:00,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:54:00,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 80 transitions. [2023-11-26 11:54:00,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:54:00,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:54:00,032 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:54:00,032 INFO L175 Difference]: Start difference. First operand has 64 places, 50 transitions, 205 flow. Second operand 3 states and 80 transitions. [2023-11-26 11:54:00,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 64 transitions, 351 flow [2023-11-26 11:54:00,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 64 transitions, 283 flow, removed 6 selfloop flow, removed 12 redundant places. [2023-11-26 11:54:00,035 INFO L231 Difference]: Finished difference. Result has 53 places, 0 transitions, 0 flow [2023-11-26 11:54:00,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=53, PETRI_TRANSITIONS=0} [2023-11-26 11:54:00,036 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 0 predicate places. [2023-11-26 11:54:00,036 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 0 transitions, 0 flow [2023-11-26 11:54:00,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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 11:54:00,039 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 25 remaining) [2023-11-26 11:54:00,039 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 25 remaining) [2023-11-26 11:54:00,040 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 25 remaining) [2023-11-26 11:54:00,040 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 25 remaining) [2023-11-26 11:54:00,040 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 25 remaining) [2023-11-26 11:54:00,045 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 25 remaining) [2023-11-26 11:54:00,045 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 25 remaining) [2023-11-26 11:54:00,045 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 25 remaining) [2023-11-26 11:54:00,045 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 25 remaining) [2023-11-26 11:54:00,045 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 25 remaining) [2023-11-26 11:54:00,046 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 25 remaining) [2023-11-26 11:54:00,046 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 25 remaining) [2023-11-26 11:54:00,046 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 25 remaining) [2023-11-26 11:54:00,046 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 25 remaining) [2023-11-26 11:54:00,046 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 25 remaining) [2023-11-26 11:54:00,046 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 25 remaining) [2023-11-26 11:54:00,046 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 25 remaining) [2023-11-26 11:54:00,046 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 25 remaining) [2023-11-26 11:54:00,047 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 25 remaining) [2023-11-26 11:54:00,047 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 25 remaining) [2023-11-26 11:54:00,047 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 25 remaining) [2023-11-26 11:54:00,047 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 25 remaining) [2023-11-26 11:54:00,047 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 25 remaining) [2023-11-26 11:54:00,047 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 25 remaining) [2023-11-26 11:54:00,047 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 25 remaining) [2023-11-26 11:54:00,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-26 11:54:00,048 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:54:00,054 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-26 11:54:00,054 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-26 11:54:00,060 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 11:54:00 BasicIcfg [2023-11-26 11:54:00,060 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-26 11:54:00,061 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 11:54:00,061 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 11:54:00,061 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 11:54:00,062 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:53:52" (3/4) ... [2023-11-26 11:54:00,064 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-26 11:54:00,067 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-26 11:54:00,068 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-26 11:54:00,068 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-11-26 11:54:00,080 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 98 nodes and edges [2023-11-26 11:54:00,080 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 26 nodes and edges [2023-11-26 11:54:00,081 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2023-11-26 11:54:00,081 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-26 11:54:00,194 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6896e3-0b22-4548-a49c-618ba6670d56/bin/uautomizer-verify-VRDe98Ueme/witness.graphml [2023-11-26 11:54:00,194 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6896e3-0b22-4548-a49c-618ba6670d56/bin/uautomizer-verify-VRDe98Ueme/witness.yml [2023-11-26 11:54:00,195 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 11:54:00,195 INFO L158 Benchmark]: Toolchain (without parser) took 9403.26ms. Allocated memory was 163.6MB in the beginning and 234.9MB in the end (delta: 71.3MB). Free memory was 117.2MB in the beginning and 131.5MB in the end (delta: -14.3MB). Peak memory consumption was 58.5MB. Max. memory is 16.1GB. [2023-11-26 11:54:00,196 INFO L158 Benchmark]: CDTParser took 1.71ms. Allocated memory is still 102.8MB. Free memory is still 76.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 11:54:00,196 INFO L158 Benchmark]: CACSL2BoogieTranslator took 414.89ms. Allocated memory is still 163.6MB. Free memory was 116.6MB in the beginning and 104.6MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-26 11:54:00,197 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.78ms. Allocated memory is still 163.6MB. Free memory was 104.6MB in the beginning and 102.4MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 11:54:00,197 INFO L158 Benchmark]: Boogie Preprocessor took 85.23ms. Allocated memory is still 163.6MB. Free memory was 102.4MB in the beginning and 99.8MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 11:54:00,198 INFO L158 Benchmark]: RCFGBuilder took 1195.33ms. Allocated memory is still 163.6MB. Free memory was 99.8MB in the beginning and 116.8MB in the end (delta: -17.0MB). Peak memory consumption was 49.2MB. Max. memory is 16.1GB. [2023-11-26 11:54:00,198 INFO L158 Benchmark]: TraceAbstraction took 7498.81ms. Allocated memory was 163.6MB in the beginning and 234.9MB in the end (delta: 71.3MB). Free memory was 115.9MB in the beginning and 136.7MB in the end (delta: -20.8MB). Peak memory consumption was 53.4MB. Max. memory is 16.1GB. [2023-11-26 11:54:00,199 INFO L158 Benchmark]: Witness Printer took 134.08ms. Allocated memory is still 234.9MB. Free memory was 136.7MB in the beginning and 131.5MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-26 11:54:00,201 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.71ms. Allocated memory is still 102.8MB. Free memory is still 76.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 414.89ms. Allocated memory is still 163.6MB. Free memory was 116.6MB in the beginning and 104.6MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 66.78ms. Allocated memory is still 163.6MB. Free memory was 104.6MB in the beginning and 102.4MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 85.23ms. Allocated memory is still 163.6MB. Free memory was 102.4MB in the beginning and 99.8MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1195.33ms. Allocated memory is still 163.6MB. Free memory was 99.8MB in the beginning and 116.8MB in the end (delta: -17.0MB). Peak memory consumption was 49.2MB. Max. memory is 16.1GB. * TraceAbstraction took 7498.81ms. Allocated memory was 163.6MB in the beginning and 234.9MB in the end (delta: 71.3MB). Free memory was 115.9MB in the beginning and 136.7MB in the end (delta: -20.8MB). Peak memory consumption was 53.4MB. Max. memory is 16.1GB. * Witness Printer took 134.08ms. Allocated memory is still 234.9MB. Free memory was 136.7MB in the beginning and 131.5MB 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: 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: 75]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 75]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 83]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 83]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 84]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 84]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 86]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 86]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 120]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 120]: 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, 82 locations, 25 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: 7.3s, OverallIterations: 10, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 172 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 144 mSDsluCounter, 33 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 25 mSDsCounter, 21 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 990 IncrementalHoareTripleChecker+Invalid, 1011 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 21 mSolverCounterUnsat, 8 mSDtfsCounter, 990 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 106 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=208occurred in iteration=4, InterpolantAutomatonStates: 54, 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: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 141 NumberOfCodeBlocks, 129 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 148 ConstructedInterpolants, 0 QuantifiedInterpolants, 460 SizeOfPredicates, 9 NumberOfNonLiveVariables, 427 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 16 InterpolantComputations, 8 PerfectInterpolantSequences, 50/108 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 12 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-26 11:54:00,239 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6896e3-0b22-4548-a49c-618ba6670d56/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