./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-poker-hand-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9460a1b0-6249-4400-b536-ea1d11904cb0/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9460a1b0-6249-4400-b536-ea1d11904cb0/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_9460a1b0-6249-4400-b536-ea1d11904cb0/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9460a1b0-6249-4400-b536-ea1d11904cb0/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-poker-hand-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9460a1b0-6249-4400-b536-ea1d11904cb0/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_9460a1b0-6249-4400-b536-ea1d11904cb0/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 6f8a234fc2a7dd634bd03f872a0d7e8707283ecf0f996c6ed729f53ab07d6660 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:43:02,165 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:43:02,307 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9460a1b0-6249-4400-b536-ea1d11904cb0/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-26 10:43:02,312 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:43:02,313 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:43:02,348 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:43:02,350 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:43:02,351 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:43:02,352 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:43:02,357 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:43:02,358 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:43:02,359 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:43:02,360 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:43:02,362 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:43:02,363 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:43:02,363 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:43:02,364 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:43:02,364 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:43:02,366 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:43:02,367 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:43:02,367 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:43:02,368 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:43:02,369 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:43:02,369 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:43:02,370 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 10:43:02,370 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 10:43:02,371 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:43:02,371 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:43:02,372 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:43:02,373 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:43:02,374 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:43:02,375 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:43:02,375 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:43:02,376 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:43:02,376 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:43:02,376 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:43:02,377 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:43:02,377 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:43:02,378 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:43:02,378 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:43:02,379 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:43:02,379 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:43:02,380 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:43:02,380 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:43:02,381 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_9460a1b0-6249-4400-b536-ea1d11904cb0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9460a1b0-6249-4400-b536-ea1d11904cb0/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6f8a234fc2a7dd634bd03f872a0d7e8707283ecf0f996c6ed729f53ab07d6660 [2023-11-26 10:43:02,759 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:43:02,802 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:43:02,806 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:43:02,807 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:43:02,808 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:43:02,810 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9460a1b0-6249-4400-b536-ea1d11904cb0/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/weaver/chl-poker-hand-symm.wvr.c [2023-11-26 10:43:06,257 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:43:06,598 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:43:06,600 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9460a1b0-6249-4400-b536-ea1d11904cb0/sv-benchmarks/c/weaver/chl-poker-hand-symm.wvr.c [2023-11-26 10:43:06,612 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9460a1b0-6249-4400-b536-ea1d11904cb0/bin/uautomizer-verify-VRDe98Ueme/data/c4c11085c/a7770d6c20374d59924a58c400b0ab77/FLAG19c476aa0 [2023-11-26 10:43:06,632 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9460a1b0-6249-4400-b536-ea1d11904cb0/bin/uautomizer-verify-VRDe98Ueme/data/c4c11085c/a7770d6c20374d59924a58c400b0ab77 [2023-11-26 10:43:06,639 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:43:06,642 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:43:06,646 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:43:06,646 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:43:06,651 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:43:06,652 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:43:06" (1/1) ... [2023-11-26 10:43:06,653 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@728122dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:06, skipping insertion in model container [2023-11-26 10:43:06,654 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:43:06" (1/1) ... [2023-11-26 10:43:06,712 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:43:07,028 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:43:07,042 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:43:07,196 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:43:07,207 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:43:07,220 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:43:07,230 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:43:07,237 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:07 WrapperNode [2023-11-26 10:43:07,238 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:43:07,239 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:43:07,240 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:43:07,240 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:43:07,249 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:07" (1/1) ... [2023-11-26 10:43:07,303 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:07" (1/1) ... [2023-11-26 10:43:07,421 INFO L138 Inliner]: procedures = 25, calls = 308, calls flagged for inlining = 70, calls inlined = 98, statements flattened = 1691 [2023-11-26 10:43:07,421 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:43:07,422 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:43:07,422 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:43:07,422 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:43:07,446 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:07" (1/1) ... [2023-11-26 10:43:07,447 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:07" (1/1) ... [2023-11-26 10:43:07,461 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:07" (1/1) ... [2023-11-26 10:43:07,567 INFO L175 MemorySlicer]: Split 190 memory accesses to 4 slices as follows [2, 184, 2, 2]. 97 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 10 writes are split as follows [0, 8, 1, 1]. [2023-11-26 10:43:07,568 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:07" (1/1) ... [2023-11-26 10:43:07,568 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:07" (1/1) ... [2023-11-26 10:43:07,674 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:07" (1/1) ... [2023-11-26 10:43:07,716 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:07" (1/1) ... [2023-11-26 10:43:07,722 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:07" (1/1) ... [2023-11-26 10:43:07,731 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:07" (1/1) ... [2023-11-26 10:43:07,744 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:43:07,745 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:43:07,746 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:43:07,746 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:43:07,747 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:07" (1/1) ... [2023-11-26 10:43:07,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:43:07,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9460a1b0-6249-4400-b536-ea1d11904cb0/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:07,798 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9460a1b0-6249-4400-b536-ea1d11904cb0/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:43:07,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9460a1b0-6249-4400-b536-ea1d11904cb0/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:43:07,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:43:07,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 10:43:07,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 10:43:07,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 10:43:07,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 10:43:07,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 10:43:07,851 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 10:43:07,853 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 10:43:07,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 10:43:07,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-26 10:43:07,854 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-26 10:43:07,855 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-26 10:43:07,855 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-26 10:43:07,855 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-26 10:43:07,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 10:43:07,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 10:43:07,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 10:43:07,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 10:43:07,857 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-26 10:43:07,857 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-26 10:43:07,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 10:43:07,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:43:07,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:43:07,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 10:43:07,862 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 10:43:08,140 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:43:08,143 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:43:10,507 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:43:13,665 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:43:13,665 INFO L309 CfgBuilder]: Removed 12 assume(true) statements. [2023-11-26 10:43:13,666 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:43:13 BoogieIcfgContainer [2023-11-26 10:43:13,666 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:43:13,668 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:43:13,669 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:43:13,672 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:43:13,673 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:43:06" (1/3) ... [2023-11-26 10:43:13,674 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@577db66e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:43:13, skipping insertion in model container [2023-11-26 10:43:13,674 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:07" (2/3) ... [2023-11-26 10:43:13,674 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@577db66e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:43:13, skipping insertion in model container [2023-11-26 10:43:13,674 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:43:13" (3/3) ... [2023-11-26 10:43:13,676 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-poker-hand-symm.wvr.c [2023-11-26 10:43:13,687 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 10:43:13,700 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:43:13,700 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 70 error locations. [2023-11-26 10:43:13,700 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 10:43:14,687 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-26 10:43:14,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 181 transitions, 376 flow [2023-11-26 10:43:14,951 INFO L124 PetriNetUnfolderBase]: 28/179 cut-off events. [2023-11-26 10:43:14,952 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-26 10:43:14,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 179 events. 28/179 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 815 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 123. Up to 7 conditions per place. [2023-11-26 10:43:14,960 INFO L82 GeneralOperation]: Start removeDead. Operand has 160 places, 181 transitions, 376 flow [2023-11-26 10:43:14,982 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 157 places, 178 transitions, 368 flow [2023-11-26 10:43:15,000 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:43:15,010 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;@33480a65, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:43:15,011 INFO L358 AbstractCegarLoop]: Starting to check reachability of 124 error locations. [2023-11-26 10:43:15,017 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 10:43:15,017 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-26 10:43:15,017 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 10:43:15,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:43:15,018 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-26 10:43:15,019 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (and 121 more)] === [2023-11-26 10:43:15,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:15,028 INFO L85 PathProgramCache]: Analyzing trace with hash 5541300, now seen corresponding path program 1 times [2023-11-26 10:43:15,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:15,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669082966] [2023-11-26 10:43:15,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:15,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:15,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:15,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:15,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:15,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669082966] [2023-11-26 10:43:15,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669082966] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:15,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:15,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:43:15,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555307516] [2023-11-26 10:43:15,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:15,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:43:15,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:15,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:43:15,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:43:15,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 181 [2023-11-26 10:43:15,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 178 transitions, 368 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:15,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:43:15,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 181 [2023-11-26 10:43:15,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:43:21,419 INFO L124 PetriNetUnfolderBase]: 5856/9249 cut-off events. [2023-11-26 10:43:21,419 INFO L125 PetriNetUnfolderBase]: For 147/147 co-relation queries the response was YES. [2023-11-26 10:43:21,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18477 conditions, 9249 events. 5856/9249 cut-off events. For 147/147 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 58859 event pairs, 4560 based on Foata normal form. 330/5517 useless extension candidates. Maximal degree in co-relation 17939. Up to 9082 conditions per place. [2023-11-26 10:43:21,500 INFO L140 encePairwiseOnDemand]: 116/181 looper letters, 138 selfloop transitions, 25 changer transitions 3/178 dead transitions. [2023-11-26 10:43:21,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 178 transitions, 696 flow [2023-11-26 10:43:21,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:43:21,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 10:43:21,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 268 transitions. [2023-11-26 10:43:21,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3701657458563536 [2023-11-26 10:43:21,526 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 268 transitions. [2023-11-26 10:43:21,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 268 transitions. [2023-11-26 10:43:21,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:43:21,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 268 transitions. [2023-11-26 10:43:21,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:21,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 181.0) internal successors, (905), 5 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:21,543 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 181.0) internal successors, (905), 5 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:21,545 INFO L175 Difference]: Start difference. First operand has 157 places, 178 transitions, 368 flow. Second operand 4 states and 268 transitions. [2023-11-26 10:43:21,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 178 transitions, 696 flow [2023-11-26 10:43:21,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 178 transitions, 688 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-26 10:43:21,563 INFO L231 Difference]: Finished difference. Result has 139 places, 175 transitions, 533 flow [2023-11-26 10:43:21,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=533, PETRI_PLACES=139, PETRI_TRANSITIONS=175} [2023-11-26 10:43:21,573 INFO L281 CegarLoopForPetriNet]: 157 programPoint places, -18 predicate places. [2023-11-26 10:43:21,574 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 175 transitions, 533 flow [2023-11-26 10:43:21,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:21,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:43:21,575 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-26 10:43:21,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 10:43:21,576 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (and 121 more)] === [2023-11-26 10:43:21,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:21,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1877717700, now seen corresponding path program 1 times [2023-11-26 10:43:21,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:21,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206420508] [2023-11-26 10:43:21,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:21,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:21,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:21,804 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:21,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:21,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206420508] [2023-11-26 10:43:21,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206420508] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:43:21,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699050942] [2023-11-26 10:43:21,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:21,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:21,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9460a1b0-6249-4400-b536-ea1d11904cb0/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:21,810 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9460a1b0-6249-4400-b536-ea1d11904cb0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:43:21,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9460a1b0-6249-4400-b536-ea1d11904cb0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 10:43:22,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:22,506 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 10:43:22,511 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:22,564 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:22,564 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:43:22,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699050942] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:22,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:43:22,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-26 10:43:22,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333913837] [2023-11-26 10:43:22,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:22,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:43:22,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:22,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:43:22,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-26 10:43:22,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 181 [2023-11-26 10:43:22,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 175 transitions, 533 flow. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:22,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:43:22,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 181 [2023-11-26 10:43:22,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:43:27,113 INFO L124 PetriNetUnfolderBase]: 5856/9238 cut-off events. [2023-11-26 10:43:27,114 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES. [2023-11-26 10:43:27,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18460 conditions, 9238 events. 5856/9238 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 601. Compared 58975 event pairs, 4560 based on Foata normal form. 8/5199 useless extension candidates. Maximal degree in co-relation 18272. Up to 9041 conditions per place. [2023-11-26 10:43:27,185 INFO L140 encePairwiseOnDemand]: 148/181 looper letters, 113 selfloop transitions, 42 changer transitions 0/167 dead transitions. [2023-11-26 10:43:27,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 167 transitions, 811 flow [2023-11-26 10:43:27,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 10:43:27,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 10:43:27,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 259 transitions. [2023-11-26 10:43:27,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.23848987108655617 [2023-11-26 10:43:27,199 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 259 transitions. [2023-11-26 10:43:27,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 259 transitions. [2023-11-26 10:43:27,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:43:27,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 259 transitions. [2023-11-26 10:43:27,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 43.166666666666664) internal successors, (259), 6 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:27,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 181.0) internal successors, (1267), 7 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:27,210 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 181.0) internal successors, (1267), 7 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:27,210 INFO L175 Difference]: Start difference. First operand has 139 places, 175 transitions, 533 flow. Second operand 6 states and 259 transitions. [2023-11-26 10:43:27,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 167 transitions, 811 flow [2023-11-26 10:43:27,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 167 transitions, 811 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 10:43:27,225 INFO L231 Difference]: Finished difference. Result has 133 places, 167 transitions, 585 flow [2023-11-26 10:43:27,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=501, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=585, PETRI_PLACES=133, PETRI_TRANSITIONS=167} [2023-11-26 10:43:27,227 INFO L281 CegarLoopForPetriNet]: 157 programPoint places, -24 predicate places. [2023-11-26 10:43:27,227 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 167 transitions, 585 flow [2023-11-26 10:43:27,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:27,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:43:27,228 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-26 10:43:27,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9460a1b0-6249-4400-b536-ea1d11904cb0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:27,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9460a1b0-6249-4400-b536-ea1d11904cb0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:27,436 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (and 121 more)] === [2023-11-26 10:43:27,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:27,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1920287800, now seen corresponding path program 1 times [2023-11-26 10:43:27,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:27,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782769249] [2023-11-26 10:43:27,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:27,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:27,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:27,619 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:27,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:27,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782769249] [2023-11-26 10:43:27,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782769249] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:43:27,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203895402] [2023-11-26 10:43:27,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:27,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:27,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9460a1b0-6249-4400-b536-ea1d11904cb0/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:27,623 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9460a1b0-6249-4400-b536-ea1d11904cb0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:43:27,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9460a1b0-6249-4400-b536-ea1d11904cb0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 10:43:28,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:28,253 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 10:43:28,254 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:28,280 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:28,280 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:43:28,327 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:28,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203895402] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:43:28,328 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:43:28,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-26 10:43:28,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234837614] [2023-11-26 10:43:28,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:43:28,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-26 10:43:28,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:28,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-26 10:43:28,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-26 10:43:28,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 181 [2023-11-26 10:43:28,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 167 transitions, 585 flow. Second operand has 12 states, 12 states have (on average 17.083333333333332) internal successors, (205), 12 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:28,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:43:28,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 181 [2023-11-26 10:43:28,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:43:32,763 INFO L124 PetriNetUnfolderBase]: 5880/9334 cut-off events. [2023-11-26 10:43:32,764 INFO L125 PetriNetUnfolderBase]: For 254/254 co-relation queries the response was YES. [2023-11-26 10:43:32,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18836 conditions, 9334 events. 5880/9334 cut-off events. For 254/254 co-relation queries the response was YES. Maximal size of possible extension queue 603. Compared 59977 event pairs, 4560 based on Foata normal form. 24/5316 useless extension candidates. Maximal degree in co-relation 18274. Up to 9076 conditions per place. [2023-11-26 10:43:32,816 INFO L140 encePairwiseOnDemand]: 148/181 looper letters, 130 selfloop transitions, 97 changer transitions 0/239 dead transitions. [2023-11-26 10:43:32,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 239 transitions, 1513 flow [2023-11-26 10:43:32,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 10:43:32,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-26 10:43:32,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 411 transitions. [2023-11-26 10:43:32,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.22707182320441988 [2023-11-26 10:43:32,820 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 411 transitions. [2023-11-26 10:43:32,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 411 transitions. [2023-11-26 10:43:32,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:43:32,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 411 transitions. [2023-11-26 10:43:32,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 41.1) internal successors, (411), 10 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:32,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 181.0) internal successors, (1991), 11 states have internal predecessors, (1991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:32,829 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 181.0) internal successors, (1991), 11 states have internal predecessors, (1991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:32,829 INFO L175 Difference]: Start difference. First operand has 133 places, 167 transitions, 585 flow. Second operand 10 states and 411 transitions. [2023-11-26 10:43:32,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 239 transitions, 1513 flow [2023-11-26 10:43:32,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 239 transitions, 1305 flow, removed 36 selfloop flow, removed 5 redundant places. [2023-11-26 10:43:32,840 INFO L231 Difference]: Finished difference. Result has 140 places, 239 transitions, 1175 flow [2023-11-26 10:43:32,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=497, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1175, PETRI_PLACES=140, PETRI_TRANSITIONS=239} [2023-11-26 10:43:32,842 INFO L281 CegarLoopForPetriNet]: 157 programPoint places, -17 predicate places. [2023-11-26 10:43:32,842 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 239 transitions, 1175 flow [2023-11-26 10:43:32,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 17.083333333333332) internal successors, (205), 12 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:32,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:43:32,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:32,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9460a1b0-6249-4400-b536-ea1d11904cb0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:33,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9460a1b0-6249-4400-b536-ea1d11904cb0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:33,051 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (and 121 more)] === [2023-11-26 10:43:33,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:33,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1552008766, now seen corresponding path program 1 times [2023-11-26 10:43:33,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:33,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951020364] [2023-11-26 10:43:33,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:33,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:33,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:33,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:33,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:33,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951020364] [2023-11-26 10:43:33,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951020364] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:33,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:33,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:43:33,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097827774] [2023-11-26 10:43:33,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:33,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:43:33,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:33,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:43:33,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:43:33,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 181 [2023-11-26 10:43:33,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 239 transitions, 1175 flow. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:33,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:43:33,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 181 [2023-11-26 10:43:33,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:43:36,854 INFO L124 PetriNetUnfolderBase]: 5878/9332 cut-off events. [2023-11-26 10:43:36,855 INFO L125 PetriNetUnfolderBase]: For 339/339 co-relation queries the response was YES. [2023-11-26 10:43:36,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18889 conditions, 9332 events. 5878/9332 cut-off events. For 339/339 co-relation queries the response was YES. Maximal size of possible extension queue 603. Compared 59917 event pairs, 4560 based on Foata normal form. 2/5288 useless extension candidates. Maximal degree in co-relation 18636. Up to 9151 conditions per place. [2023-11-26 10:43:36,910 INFO L140 encePairwiseOnDemand]: 176/181 looper letters, 210 selfloop transitions, 7 changer transitions 0/237 dead transitions. [2023-11-26 10:43:36,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 237 transitions, 1601 flow [2023-11-26 10:43:36,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:43:36,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 10:43:36,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 225 transitions. [2023-11-26 10:43:36,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4143646408839779 [2023-11-26 10:43:36,914 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 225 transitions. [2023-11-26 10:43:36,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 225 transitions. [2023-11-26 10:43:36,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:43:36,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 225 transitions. [2023-11-26 10:43:36,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:36,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 181.0) internal successors, (724), 4 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:36,919 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 181.0) internal successors, (724), 4 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:36,919 INFO L175 Difference]: Start difference. First operand has 140 places, 239 transitions, 1175 flow. Second operand 3 states and 225 transitions. [2023-11-26 10:43:36,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 237 transitions, 1601 flow [2023-11-26 10:43:36,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 237 transitions, 1499 flow, removed 24 selfloop flow, removed 2 redundant places. [2023-11-26 10:43:36,930 INFO L231 Difference]: Finished difference. Result has 140 places, 237 transitions, 1079 flow [2023-11-26 10:43:36,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=1065, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1079, PETRI_PLACES=140, PETRI_TRANSITIONS=237} [2023-11-26 10:43:36,932 INFO L281 CegarLoopForPetriNet]: 157 programPoint places, -17 predicate places. [2023-11-26 10:43:36,933 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 237 transitions, 1079 flow [2023-11-26 10:43:36,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:36,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:43:36,933 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2023-11-26 10:43:36,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 10:43:36,934 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (and 121 more)] === [2023-11-26 10:43:36,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:36,935 INFO L85 PathProgramCache]: Analyzing trace with hash 284750552, now seen corresponding path program 2 times [2023-11-26 10:43:36,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:36,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234512552] [2023-11-26 10:43:36,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:36,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:36,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:37,148 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:37,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:37,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234512552] [2023-11-26 10:43:37,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234512552] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:43:37,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882903207] [2023-11-26 10:43:37,150 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 10:43:37,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:37,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9460a1b0-6249-4400-b536-ea1d11904cb0/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:37,153 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9460a1b0-6249-4400-b536-ea1d11904cb0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:43:37,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9460a1b0-6249-4400-b536-ea1d11904cb0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 10:43:37,803 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-26 10:43:37,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 10:43:37,804 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 10:43:37,807 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:37,854 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-26 10:43:37,854 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:43:37,916 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-26 10:43:37,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882903207] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:43:37,917 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:43:37,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 13 [2023-11-26 10:43:37,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474793939] [2023-11-26 10:43:37,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:43:37,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-26 10:43:37,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:37,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-26 10:43:37,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2023-11-26 10:43:38,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 181 [2023-11-26 10:43:38,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 237 transitions, 1079 flow. Second operand has 15 states, 15 states have (on average 17.333333333333332) internal successors, (260), 15 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:38,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:43:38,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 181 [2023-11-26 10:43:38,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:43:42,577 INFO L124 PetriNetUnfolderBase]: 5886/9344 cut-off events. [2023-11-26 10:43:42,578 INFO L125 PetriNetUnfolderBase]: For 302/302 co-relation queries the response was YES. [2023-11-26 10:43:42,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18872 conditions, 9344 events. 5886/9344 cut-off events. For 302/302 co-relation queries the response was YES. Maximal size of possible extension queue 603. Compared 59939 event pairs, 4560 based on Foata normal form. 10/5302 useless extension candidates. Maximal degree in co-relation 18770. Up to 9045 conditions per place. [2023-11-26 10:43:42,626 INFO L140 encePairwiseOnDemand]: 148/181 looper letters, 102 selfloop transitions, 133 changer transitions 0/247 dead transitions. [2023-11-26 10:43:42,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 247 transitions, 1582 flow [2023-11-26 10:43:42,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-26 10:43:42,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-11-26 10:43:42,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 645 transitions. [2023-11-26 10:43:42,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.1425414364640884 [2023-11-26 10:43:42,633 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 645 transitions. [2023-11-26 10:43:42,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 645 transitions. [2023-11-26 10:43:42,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:43:42,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 645 transitions. [2023-11-26 10:43:42,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 25.8) internal successors, (645), 25 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:42,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 181.0) internal successors, (4706), 26 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:42,645 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 181.0) internal successors, (4706), 26 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:42,646 INFO L175 Difference]: Start difference. First operand has 140 places, 237 transitions, 1079 flow. Second operand 25 states and 645 transitions. [2023-11-26 10:43:42,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 247 transitions, 1582 flow [2023-11-26 10:43:42,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 247 transitions, 1490 flow, removed 10 selfloop flow, removed 5 redundant places. [2023-11-26 10:43:42,656 INFO L231 Difference]: Finished difference. Result has 151 places, 247 transitions, 1286 flow [2023-11-26 10:43:42,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=912, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1286, PETRI_PLACES=151, PETRI_TRANSITIONS=247} [2023-11-26 10:43:42,657 INFO L281 CegarLoopForPetriNet]: 157 programPoint places, -6 predicate places. [2023-11-26 10:43:42,658 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 247 transitions, 1286 flow [2023-11-26 10:43:42,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 17.333333333333332) internal successors, (260), 15 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:42,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:43:42,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:42,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9460a1b0-6249-4400-b536-ea1d11904cb0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:42,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9460a1b0-6249-4400-b536-ea1d11904cb0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:42,865 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (and 121 more)] === [2023-11-26 10:43:42,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:42,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1209039453, now seen corresponding path program 1 times [2023-11-26 10:43:42,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:42,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163595775] [2023-11-26 10:43:42,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:42,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:42,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:43,048 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 10:43:43,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:43,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163595775] [2023-11-26 10:43:43,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163595775] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:43,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:43,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:43:43,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060429227] [2023-11-26 10:43:43,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:43,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:43:43,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:43,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:43:43,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:43:43,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 181 [2023-11-26 10:43:43,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 247 transitions, 1286 flow. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 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 10:43:43,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:43:43,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 181 [2023-11-26 10:43:43,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:43:47,246 INFO L124 PetriNetUnfolderBase]: 5882/9340 cut-off events. [2023-11-26 10:43:47,246 INFO L125 PetriNetUnfolderBase]: For 297/297 co-relation queries the response was YES. [2023-11-26 10:43:47,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18944 conditions, 9340 events. 5882/9340 cut-off events. For 297/297 co-relation queries the response was YES. Maximal size of possible extension queue 603. Compared 59565 event pairs, 4560 based on Foata normal form. 4/5266 useless extension candidates. Maximal degree in co-relation 18243. Up to 9148 conditions per place. [2023-11-26 10:43:47,287 INFO L140 encePairwiseOnDemand]: 172/181 looper letters, 207 selfloop transitions, 24 changer transitions 0/243 dead transitions. [2023-11-26 10:43:47,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 243 transitions, 1730 flow [2023-11-26 10:43:47,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:43:47,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 10:43:47,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 231 transitions. [2023-11-26 10:43:47,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425414364640884 [2023-11-26 10:43:47,290 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 231 transitions. [2023-11-26 10:43:47,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 231 transitions. [2023-11-26 10:43:47,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:43:47,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 231 transitions. [2023-11-26 10:43:47,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:47,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 181.0) internal successors, (724), 4 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:47,293 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 181.0) internal successors, (724), 4 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:47,294 INFO L175 Difference]: Start difference. First operand has 151 places, 247 transitions, 1286 flow. Second operand 3 states and 231 transitions. [2023-11-26 10:43:47,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 243 transitions, 1730 flow [2023-11-26 10:43:47,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 243 transitions, 1263 flow, removed 28 selfloop flow, removed 12 redundant places. [2023-11-26 10:43:47,303 INFO L231 Difference]: Finished difference. Result has 141 places, 243 transitions, 849 flow [2023-11-26 10:43:47,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=801, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=849, PETRI_PLACES=141, PETRI_TRANSITIONS=243} [2023-11-26 10:43:47,305 INFO L281 CegarLoopForPetriNet]: 157 programPoint places, -16 predicate places. [2023-11-26 10:43:47,305 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 243 transitions, 849 flow [2023-11-26 10:43:47,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 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 10:43:47,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:43:47,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:47,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 10:43:47,306 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (and 121 more)] === [2023-11-26 10:43:47,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:47,307 INFO L85 PathProgramCache]: Analyzing trace with hash 227095942, now seen corresponding path program 1 times [2023-11-26 10:43:47,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:47,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125460024] [2023-11-26 10:43:47,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:47,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:47,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:47,519 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 10:43:47,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:47,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125460024] [2023-11-26 10:43:47,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125460024] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:43:47,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752960831] [2023-11-26 10:43:47,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:47,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:47,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9460a1b0-6249-4400-b536-ea1d11904cb0/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:47,522 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9460a1b0-6249-4400-b536-ea1d11904cb0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:43:47,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9460a1b0-6249-4400-b536-ea1d11904cb0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 10:43:48,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:48,223 INFO L262 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 10:43:48,227 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:48,278 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 10:43:48,278 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:43:48,322 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 10:43:48,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752960831] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:43:48,323 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:43:48,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-26 10:43:48,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287234294] [2023-11-26 10:43:48,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:43:48,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-26 10:43:48,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:48,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-26 10:43:48,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-26 10:43:48,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 181 [2023-11-26 10:43:48,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 243 transitions, 849 flow. Second operand has 11 states, 11 states have (on average 19.09090909090909) internal successors, (210), 11 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:48,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:43:48,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 181 [2023-11-26 10:43:48,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:43:52,894 INFO L124 PetriNetUnfolderBase]: 5868/9326 cut-off events. [2023-11-26 10:43:52,894 INFO L125 PetriNetUnfolderBase]: For 111/111 co-relation queries the response was YES. [2023-11-26 10:43:52,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18691 conditions, 9326 events. 5868/9326 cut-off events. For 111/111 co-relation queries the response was YES. Maximal size of possible extension queue 603. Compared 58945 event pairs, 4560 based on Foata normal form. 7/5282 useless extension candidates. Maximal degree in co-relation 18392. Up to 9072 conditions per place. [2023-11-26 10:43:52,928 INFO L140 encePairwiseOnDemand]: 156/181 looper letters, 109 selfloop transitions, 108 changer transitions 0/229 dead transitions. [2023-11-26 10:43:52,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 229 transitions, 1207 flow [2023-11-26 10:43:52,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-26 10:43:52,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-26 10:43:52,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 377 transitions. [2023-11-26 10:43:52,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.16022099447513813 [2023-11-26 10:43:52,933 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 377 transitions. [2023-11-26 10:43:52,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 377 transitions. [2023-11-26 10:43:52,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:43:52,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 377 transitions. [2023-11-26 10:43:52,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 29.0) internal successors, (377), 13 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:52,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 181.0) internal successors, (2534), 14 states have internal predecessors, (2534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:52,941 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 181.0) internal successors, (2534), 14 states have internal predecessors, (2534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:52,941 INFO L175 Difference]: Start difference. First operand has 141 places, 243 transitions, 849 flow. Second operand 13 states and 377 transitions. [2023-11-26 10:43:52,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 229 transitions, 1207 flow [2023-11-26 10:43:52,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 229 transitions, 1154 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 10:43:52,949 INFO L231 Difference]: Finished difference. Result has 151 places, 229 transitions, 936 flow [2023-11-26 10:43:52,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=720, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=936, PETRI_PLACES=151, PETRI_TRANSITIONS=229} [2023-11-26 10:43:52,950 INFO L281 CegarLoopForPetriNet]: 157 programPoint places, -6 predicate places. [2023-11-26 10:43:52,950 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 229 transitions, 936 flow [2023-11-26 10:43:52,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 19.09090909090909) internal successors, (210), 11 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:52,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:43:52,951 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:52,965 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9460a1b0-6249-4400-b536-ea1d11904cb0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-26 10:43:53,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9460a1b0-6249-4400-b536-ea1d11904cb0/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-26 10:43:53,159 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (and 121 more)] === [2023-11-26 10:43:53,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:53,160 INFO L85 PathProgramCache]: Analyzing trace with hash -699740815, now seen corresponding path program 1 times [2023-11-26 10:43:53,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:53,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111177579] [2023-11-26 10:43:53,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:53,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:53,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat