./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-three-array-min.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_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya --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 632917bb2a5e88c193ba7761220e89039206b92cb89d98172ae8e9ad69d27ca8 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 00:53:02,528 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 00:53:02,596 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 00:53:02,600 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 00:53:02,601 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 00:53:02,625 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 00:53:02,626 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 00:53:02,627 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 00:53:02,627 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 00:53:02,628 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 00:53:02,628 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 00:53:02,629 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 00:53:02,630 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 00:53:02,630 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 00:53:02,631 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 00:53:02,631 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 00:53:02,632 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 00:53:02,632 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 00:53:02,633 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 00:53:02,633 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 00:53:02,634 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 00:53:02,634 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 00:53:02,635 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 00:53:02,635 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 00:53:02,635 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 00:53:02,636 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 00:53:02,636 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 00:53:02,637 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 00:53:02,637 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 00:53:02,638 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 00:53:02,638 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 00:53:02,638 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 00:53:02,639 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 00:53:02,639 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:53:02,639 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 00:53:02,640 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 00:53:02,640 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 00:53:02,640 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 00:53:02,640 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 00:53:02,640 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 00:53:02,641 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 00:53:02,641 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 00:53:02,641 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 00:53:02,641 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 00:53:02,642 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_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 632917bb2a5e88c193ba7761220e89039206b92cb89d98172ae8e9ad69d27ca8 [2023-11-29 00:53:02,863 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 00:53:02,892 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 00:53:02,894 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 00:53:02,896 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 00:53:02,896 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 00:53:02,897 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c [2023-11-29 00:53:05,671 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:53:05,857 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:53:05,857 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c [2023-11-29 00:53:05,866 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/data/2af964186/ad3648acad3b4114911c089325c5d50b/FLAGecf2e19ca [2023-11-29 00:53:05,880 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/data/2af964186/ad3648acad3b4114911c089325c5d50b [2023-11-29 00:53:05,883 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:53:05,885 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:53:05,886 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:53:05,886 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:53:05,892 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:53:05,892 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:53:05" (1/1) ... [2023-11-29 00:53:05,893 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52e96903 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:53:05, skipping insertion in model container [2023-11-29 00:53:05,894 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:53:05" (1/1) ... [2023-11-29 00:53:05,921 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:53:06,111 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:53:06,121 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 00:53:06,153 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:53:06,162 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 00:53:06,162 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 00:53:06,170 INFO L206 MainTranslator]: Completed translation [2023-11-29 00:53:06,171 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:53:06 WrapperNode [2023-11-29 00:53:06,171 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 00:53:06,172 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 00:53:06,172 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 00:53:06,172 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 00:53:06,180 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:53:06" (1/1) ... [2023-11-29 00:53:06,190 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:53:06" (1/1) ... [2023-11-29 00:53:06,220 INFO L138 Inliner]: procedures = 26, calls = 58, calls flagged for inlining = 15, calls inlined = 23, statements flattened = 294 [2023-11-29 00:53:06,221 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 00:53:06,221 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 00:53:06,221 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 00:53:06,221 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 00:53:06,231 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:53:06" (1/1) ... [2023-11-29 00:53:06,231 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:53:06" (1/1) ... [2023-11-29 00:53:06,236 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:53:06" (1/1) ... [2023-11-29 00:53:06,256 INFO L175 MemorySlicer]: Split 24 memory accesses to 5 slices as follows [2, 2, 2, 2, 16]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 7 writes are split as follows [0, 1, 1, 1, 4]. [2023-11-29 00:53:06,256 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:53:06" (1/1) ... [2023-11-29 00:53:06,256 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:53:06" (1/1) ... [2023-11-29 00:53:06,270 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:53:06" (1/1) ... [2023-11-29 00:53:06,276 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:53:06" (1/1) ... [2023-11-29 00:53:06,279 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:53:06" (1/1) ... [2023-11-29 00:53:06,282 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:53:06" (1/1) ... [2023-11-29 00:53:06,287 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 00:53:06,288 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 00:53:06,288 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 00:53:06,288 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 00:53:06,289 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:53:06" (1/1) ... [2023-11-29 00:53:06,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:53:06,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:53:06,315 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 00:53:06,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 00:53:06,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 00:53:06,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 00:53:06,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 00:53:06,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 00:53:06,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 00:53:06,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 00:53:06,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 00:53:06,344 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 00:53:06,344 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 00:53:06,344 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 00:53:06,344 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 00:53:06,344 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 00:53:06,345 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 00:53:06,345 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 00:53:06,345 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 00:53:06,345 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 00:53:06,345 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-29 00:53:06,345 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-29 00:53:06,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 00:53:06,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 00:53:06,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 00:53:06,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 00:53:06,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 00:53:06,346 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 00:53:06,346 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 00:53:06,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 00:53:06,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 00:53:06,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 00:53:06,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 00:53:06,349 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 00:53:06,476 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 00:53:06,477 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 00:53:06,951 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 00:53:07,312 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 00:53:07,313 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-29 00:53:07,313 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:53:07 BoogieIcfgContainer [2023-11-29 00:53:07,313 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 00:53:07,316 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 00:53:07,316 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 00:53:07,319 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 00:53:07,320 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:53:05" (1/3) ... [2023-11-29 00:53:07,321 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@647b3e90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:53:07, skipping insertion in model container [2023-11-29 00:53:07,321 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:53:06" (2/3) ... [2023-11-29 00:53:07,321 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@647b3e90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:53:07, skipping insertion in model container [2023-11-29 00:53:07,321 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:53:07" (3/3) ... [2023-11-29 00:53:07,323 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-min.wvr.c [2023-11-29 00:53:07,332 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 00:53:07,350 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 00:53:07,350 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2023-11-29 00:53:07,350 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 00:53:07,457 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-29 00:53:07,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 107 transitions, 235 flow [2023-11-29 00:53:07,541 INFO L124 PetriNetUnfolderBase]: 11/104 cut-off events. [2023-11-29 00:53:07,541 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-29 00:53:07,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117 conditions, 104 events. 11/104 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 251 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2023-11-29 00:53:07,545 INFO L82 GeneralOperation]: Start removeDead. Operand has 106 places, 107 transitions, 235 flow [2023-11-29 00:53:07,550 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 103 transitions, 224 flow [2023-11-29 00:53:07,560 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:53:07,567 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;@261567e4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:53:07,567 INFO L358 AbstractCegarLoop]: Starting to check reachability of 49 error locations. [2023-11-29 00:53:07,571 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 00:53:07,571 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-29 00:53:07,572 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 00:53:07,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:53:07,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-29 00:53:07,573 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-29 00:53:07,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:53:07,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1038702, now seen corresponding path program 1 times [2023-11-29 00:53:07,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:53:07,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160665614] [2023-11-29 00:53:07,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:53:07,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:53:07,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:53:07,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:53:07,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:53:07,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160665614] [2023-11-29 00:53:07,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160665614] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:53:07,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:53:07,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:53:07,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482705731] [2023-11-29 00:53:07,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:53:07,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:53:07,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:53:07,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:53:07,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:53:07,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 107 [2023-11-29 00:53:07,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 103 transitions, 224 flow. Second operand has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 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) [2023-11-29 00:53:07,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:53:07,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 107 [2023-11-29 00:53:07,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:53:08,490 INFO L124 PetriNetUnfolderBase]: 1287/2252 cut-off events. [2023-11-29 00:53:08,490 INFO L125 PetriNetUnfolderBase]: For 103/103 co-relation queries the response was YES. [2023-11-29 00:53:08,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4194 conditions, 2252 events. 1287/2252 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 13401 event pairs, 991 based on Foata normal form. 3/1589 useless extension candidates. Maximal degree in co-relation 3429. Up to 1784 conditions per place. [2023-11-29 00:53:08,519 INFO L140 encePairwiseOnDemand]: 89/107 looper letters, 54 selfloop transitions, 10 changer transitions 0/110 dead transitions. [2023-11-29 00:53:08,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 110 transitions, 366 flow [2023-11-29 00:53:08,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:53:08,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:53:08,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 268 transitions. [2023-11-29 00:53:08,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6261682242990654 [2023-11-29 00:53:08,535 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 268 transitions. [2023-11-29 00:53:08,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 268 transitions. [2023-11-29 00:53:08,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:53:08,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 268 transitions. [2023-11-29 00:53:08,542 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) [2023-11-29 00:53:08,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 107.0) internal successors, (535), 5 states have internal predecessors, (535), 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) [2023-11-29 00:53:08,548 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 107.0) internal successors, (535), 5 states have internal predecessors, (535), 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) [2023-11-29 00:53:08,550 INFO L175 Difference]: Start difference. First operand has 102 places, 103 transitions, 224 flow. Second operand 4 states and 268 transitions. [2023-11-29 00:53:08,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 110 transitions, 366 flow [2023-11-29 00:53:08,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 110 transitions, 354 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-29 00:53:08,567 INFO L231 Difference]: Finished difference. Result has 100 places, 110 transitions, 296 flow [2023-11-29 00:53:08,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=296, PETRI_PLACES=100, PETRI_TRANSITIONS=110} [2023-11-29 00:53:08,573 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, -2 predicate places. [2023-11-29 00:53:08,573 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 110 transitions, 296 flow [2023-11-29 00:53:08,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 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) [2023-11-29 00:53:08,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:53:08,574 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-29 00:53:08,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 00:53:08,574 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-29 00:53:08,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:53:08,575 INFO L85 PathProgramCache]: Analyzing trace with hash 880253327, now seen corresponding path program 1 times [2023-11-29 00:53:08,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:53:08,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183776456] [2023-11-29 00:53:08,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:53:08,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:53:08,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:53:08,693 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:53:08,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:53:08,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183776456] [2023-11-29 00:53:08,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183776456] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:53:08,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350701266] [2023-11-29 00:53:08,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:53:08,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:53:08,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:53:08,698 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:53:08,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 00:53:08,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:53:08,822 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 00:53:08,826 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:53:08,882 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:53:08,882 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:53:08,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350701266] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:53:08,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:53:08,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-29 00:53:08,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837098447] [2023-11-29 00:53:08,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:53:08,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:53:08,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:53:08,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:53:08,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:53:08,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 107 [2023-11-29 00:53:08,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 110 transitions, 296 flow. Second operand has 6 states, 6 states have (on average 49.833333333333336) internal successors, (299), 6 states have internal predecessors, (299), 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) [2023-11-29 00:53:08,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:53:08,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 107 [2023-11-29 00:53:08,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:53:09,316 INFO L124 PetriNetUnfolderBase]: 1287/2249 cut-off events. [2023-11-29 00:53:09,316 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2023-11-29 00:53:09,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4119 conditions, 2249 events. 1287/2249 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 13336 event pairs, 991 based on Foata normal form. 3/1591 useless extension candidates. Maximal degree in co-relation 4046. Up to 1769 conditions per place. [2023-11-29 00:53:09,331 INFO L140 encePairwiseOnDemand]: 94/107 looper letters, 44 selfloop transitions, 17 changer transitions 0/107 dead transitions. [2023-11-29 00:53:09,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 107 transitions, 406 flow [2023-11-29 00:53:09,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:53:09,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 00:53:09,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 358 transitions. [2023-11-29 00:53:09,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.557632398753894 [2023-11-29 00:53:09,336 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 358 transitions. [2023-11-29 00:53:09,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 358 transitions. [2023-11-29 00:53:09,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:53:09,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 358 transitions. [2023-11-29 00:53:09,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 59.666666666666664) internal successors, (358), 6 states have internal predecessors, (358), 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) [2023-11-29 00:53:09,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 107.0) internal successors, (749), 7 states have internal predecessors, (749), 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) [2023-11-29 00:53:09,342 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 107.0) internal successors, (749), 7 states have internal predecessors, (749), 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) [2023-11-29 00:53:09,342 INFO L175 Difference]: Start difference. First operand has 100 places, 110 transitions, 296 flow. Second operand 6 states and 358 transitions. [2023-11-29 00:53:09,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 107 transitions, 406 flow [2023-11-29 00:53:09,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 107 transitions, 406 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 00:53:09,347 INFO L231 Difference]: Finished difference. Result has 102 places, 107 transitions, 318 flow [2023-11-29 00:53:09,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=318, PETRI_PLACES=102, PETRI_TRANSITIONS=107} [2023-11-29 00:53:09,348 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 0 predicate places. [2023-11-29 00:53:09,348 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 107 transitions, 318 flow [2023-11-29 00:53:09,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.833333333333336) internal successors, (299), 6 states have internal predecessors, (299), 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) [2023-11-29 00:53:09,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:53:09,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 00:53:09,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 00:53:09,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:53:09,550 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-29 00:53:09,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:53:09,550 INFO L85 PathProgramCache]: Analyzing trace with hash 881187563, now seen corresponding path program 1 times [2023-11-29 00:53:09,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:53:09,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154309269] [2023-11-29 00:53:09,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:53:09,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:53:09,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:53:09,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:53:09,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:53:09,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154309269] [2023-11-29 00:53:09,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154309269] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:53:09,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:53:09,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:53:09,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502719439] [2023-11-29 00:53:09,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:53:09,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:53:09,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:53:09,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:53:09,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:53:09,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 107 [2023-11-29 00:53:09,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 107 transitions, 318 flow. Second operand has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 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) [2023-11-29 00:53:09,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:53:09,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 107 [2023-11-29 00:53:09,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:53:10,150 INFO L124 PetriNetUnfolderBase]: 1288/2266 cut-off events. [2023-11-29 00:53:10,150 INFO L125 PetriNetUnfolderBase]: For 54/54 co-relation queries the response was YES. [2023-11-29 00:53:10,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4168 conditions, 2266 events. 1288/2266 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 13369 event pairs, 991 based on Foata normal form. 4/1608 useless extension candidates. Maximal degree in co-relation 4082. Up to 1784 conditions per place. [2023-11-29 00:53:10,171 INFO L140 encePairwiseOnDemand]: 92/107 looper letters, 65 selfloop transitions, 10 changer transitions 0/112 dead transitions. [2023-11-29 00:53:10,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 112 transitions, 478 flow [2023-11-29 00:53:10,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:53:10,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:53:10,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 244 transitions. [2023-11-29 00:53:10,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5700934579439252 [2023-11-29 00:53:10,173 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 244 transitions. [2023-11-29 00:53:10,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 244 transitions. [2023-11-29 00:53:10,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:53:10,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 244 transitions. [2023-11-29 00:53:10,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 61.0) internal successors, (244), 4 states have internal predecessors, (244), 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) [2023-11-29 00:53:10,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 107.0) internal successors, (535), 5 states have internal predecessors, (535), 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) [2023-11-29 00:53:10,177 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 107.0) internal successors, (535), 5 states have internal predecessors, (535), 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) [2023-11-29 00:53:10,177 INFO L175 Difference]: Start difference. First operand has 102 places, 107 transitions, 318 flow. Second operand 4 states and 244 transitions. [2023-11-29 00:53:10,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 112 transitions, 478 flow [2023-11-29 00:53:10,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 112 transitions, 440 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-11-29 00:53:10,182 INFO L231 Difference]: Finished difference. Result has 101 places, 110 transitions, 344 flow [2023-11-29 00:53:10,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=344, PETRI_PLACES=101, PETRI_TRANSITIONS=110} [2023-11-29 00:53:10,183 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, -1 predicate places. [2023-11-29 00:53:10,184 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 110 transitions, 344 flow [2023-11-29 00:53:10,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 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) [2023-11-29 00:53:10,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:53:10,184 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-29 00:53:10,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 00:53:10,185 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-29 00:53:10,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:53:10,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1518050420, now seen corresponding path program 1 times [2023-11-29 00:53:10,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:53:10,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940598212] [2023-11-29 00:53:10,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:53:10,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:53:10,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:53:10,262 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:53:10,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:53:10,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940598212] [2023-11-29 00:53:10,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940598212] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:53:10,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463619060] [2023-11-29 00:53:10,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:53:10,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:53:10,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:53:10,265 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:53:10,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 00:53:10,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:53:10,379 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 00:53:10,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:53:10,404 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:53:10,404 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:53:10,446 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:53:10,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1463619060] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:53:10,447 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:53:10,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-29 00:53:10,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817685428] [2023-11-29 00:53:10,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:53:10,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:53:10,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:53:10,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:53:10,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:53:10,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 107 [2023-11-29 00:53:10,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 110 transitions, 344 flow. Second operand has 12 states, 12 states have (on average 50.083333333333336) internal successors, (601), 12 states have internal predecessors, (601), 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) [2023-11-29 00:53:10,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:53:10,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 107 [2023-11-29 00:53:10,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:53:11,014 INFO L124 PetriNetUnfolderBase]: 1297/2302 cut-off events. [2023-11-29 00:53:11,015 INFO L125 PetriNetUnfolderBase]: For 101/101 co-relation queries the response was YES. [2023-11-29 00:53:11,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4276 conditions, 2302 events. 1297/2302 cut-off events. For 101/101 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 13619 event pairs, 991 based on Foata normal form. 9/1648 useless extension candidates. Maximal degree in co-relation 4093. Up to 1789 conditions per place. [2023-11-29 00:53:11,032 INFO L140 encePairwiseOnDemand]: 94/107 looper letters, 54 selfloop transitions, 37 changer transitions 0/137 dead transitions. [2023-11-29 00:53:11,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 137 transitions, 667 flow [2023-11-29 00:53:11,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 00:53:11,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 00:53:11,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 587 transitions. [2023-11-29 00:53:11,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5485981308411215 [2023-11-29 00:53:11,035 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 587 transitions. [2023-11-29 00:53:11,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 587 transitions. [2023-11-29 00:53:11,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:53:11,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 587 transitions. [2023-11-29 00:53:11,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 58.7) internal successors, (587), 10 states have internal predecessors, (587), 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) [2023-11-29 00:53:11,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 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) [2023-11-29 00:53:11,042 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 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) [2023-11-29 00:53:11,042 INFO L175 Difference]: Start difference. First operand has 101 places, 110 transitions, 344 flow. Second operand 10 states and 587 transitions. [2023-11-29 00:53:11,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 137 transitions, 667 flow [2023-11-29 00:53:11,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 137 transitions, 667 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 00:53:11,046 INFO L231 Difference]: Finished difference. Result has 113 places, 137 transitions, 609 flow [2023-11-29 00:53:11,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=609, PETRI_PLACES=113, PETRI_TRANSITIONS=137} [2023-11-29 00:53:11,047 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 11 predicate places. [2023-11-29 00:53:11,047 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 137 transitions, 609 flow [2023-11-29 00:53:11,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.083333333333336) internal successors, (601), 12 states have internal predecessors, (601), 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) [2023-11-29 00:53:11,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:53:11,048 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:53:11,053 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-29 00:53:11,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:53:11,249 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-29 00:53:11,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:53:11,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1547011762, now seen corresponding path program 1 times [2023-11-29 00:53:11,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:53:11,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697603375] [2023-11-29 00:53:11,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:53:11,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:53:11,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:53:11,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:53:11,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:53:11,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697603375] [2023-11-29 00:53:11,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697603375] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:53:11,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:53:11,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:53:11,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804679984] [2023-11-29 00:53:11,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:53:11,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:53:11,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:53:11,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:53:11,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:53:11,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 107 [2023-11-29 00:53:11,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 137 transitions, 609 flow. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:53:11,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:53:11,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 107 [2023-11-29 00:53:11,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:53:11,741 INFO L124 PetriNetUnfolderBase]: 1296/2301 cut-off events. [2023-11-29 00:53:11,741 INFO L125 PetriNetUnfolderBase]: For 156/156 co-relation queries the response was YES. [2023-11-29 00:53:11,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4336 conditions, 2301 events. 1296/2301 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 13567 event pairs, 991 based on Foata normal form. 1/1645 useless extension candidates. Maximal degree in co-relation 4233. Up to 1815 conditions per place. [2023-11-29 00:53:11,761 INFO L140 encePairwiseOnDemand]: 104/107 looper letters, 85 selfloop transitions, 2 changer transitions 0/136 dead transitions. [2023-11-29 00:53:11,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 136 transitions, 779 flow [2023-11-29 00:53:11,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:53:11,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:53:11,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 217 transitions. [2023-11-29 00:53:11,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.67601246105919 [2023-11-29 00:53:11,763 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 217 transitions. [2023-11-29 00:53:11,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 217 transitions. [2023-11-29 00:53:11,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:53:11,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 217 transitions. [2023-11-29 00:53:11,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 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) [2023-11-29 00:53:11,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 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) [2023-11-29 00:53:11,765 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 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) [2023-11-29 00:53:11,765 INFO L175 Difference]: Start difference. First operand has 113 places, 137 transitions, 609 flow. Second operand 3 states and 217 transitions. [2023-11-29 00:53:11,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 136 transitions, 779 flow [2023-11-29 00:53:11,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 136 transitions, 742 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-11-29 00:53:11,771 INFO L231 Difference]: Finished difference. Result has 113 places, 136 transitions, 572 flow [2023-11-29 00:53:11,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=568, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=572, PETRI_PLACES=113, PETRI_TRANSITIONS=136} [2023-11-29 00:53:11,772 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 11 predicate places. [2023-11-29 00:53:11,772 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 136 transitions, 572 flow [2023-11-29 00:53:11,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:53:11,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:53:11,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:53:11,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 00:53:11,773 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-29 00:53:11,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:53:11,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1735504301, now seen corresponding path program 1 times [2023-11-29 00:53:11,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:53:11,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909543381] [2023-11-29 00:53:11,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:53:11,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:53:11,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:53:11,850 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:53:11,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:53:11,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909543381] [2023-11-29 00:53:11,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909543381] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:53:11,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:53:11,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:53:11,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730866420] [2023-11-29 00:53:11,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:53:11,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:53:11,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:53:11,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:53:11,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:53:11,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 107 [2023-11-29 00:53:11,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 136 transitions, 572 flow. Second operand has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 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) [2023-11-29 00:53:11,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:53:11,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 107 [2023-11-29 00:53:11,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:53:12,239 INFO L124 PetriNetUnfolderBase]: 1294/2299 cut-off events. [2023-11-29 00:53:12,239 INFO L125 PetriNetUnfolderBase]: For 115/115 co-relation queries the response was YES. [2023-11-29 00:53:12,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4310 conditions, 2299 events. 1294/2299 cut-off events. For 115/115 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 13546 event pairs, 991 based on Foata normal form. 2/1644 useless extension candidates. Maximal degree in co-relation 4284. Up to 1802 conditions per place. [2023-11-29 00:53:12,259 INFO L140 encePairwiseOnDemand]: 100/107 looper letters, 73 selfloop transitions, 12 changer transitions 0/134 dead transitions. [2023-11-29 00:53:12,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 134 transitions, 729 flow [2023-11-29 00:53:12,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:53:12,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:53:12,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 277 transitions. [2023-11-29 00:53:12,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.647196261682243 [2023-11-29 00:53:12,261 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 277 transitions. [2023-11-29 00:53:12,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 277 transitions. [2023-11-29 00:53:12,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:53:12,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 277 transitions. [2023-11-29 00:53:12,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 69.25) internal successors, (277), 4 states have internal predecessors, (277), 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) [2023-11-29 00:53:12,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 107.0) internal successors, (535), 5 states have internal predecessors, (535), 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) [2023-11-29 00:53:12,264 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 107.0) internal successors, (535), 5 states have internal predecessors, (535), 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) [2023-11-29 00:53:12,264 INFO L175 Difference]: Start difference. First operand has 113 places, 136 transitions, 572 flow. Second operand 4 states and 277 transitions. [2023-11-29 00:53:12,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 134 transitions, 729 flow [2023-11-29 00:53:12,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 134 transitions, 715 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:53:12,269 INFO L231 Difference]: Finished difference. Result has 114 places, 134 transitions, 569 flow [2023-11-29 00:53:12,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=545, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=569, PETRI_PLACES=114, PETRI_TRANSITIONS=134} [2023-11-29 00:53:12,270 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 12 predicate places. [2023-11-29 00:53:12,270 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 134 transitions, 569 flow [2023-11-29 00:53:12,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 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) [2023-11-29 00:53:12,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:53:12,271 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2023-11-29 00:53:12,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 00:53:12,271 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-29 00:53:12,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:53:12,271 INFO L85 PathProgramCache]: Analyzing trace with hash 225327029, now seen corresponding path program 2 times [2023-11-29 00:53:12,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:53:12,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536642892] [2023-11-29 00:53:12,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:53:12,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:53:12,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:53:12,410 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:53:12,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:53:12,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536642892] [2023-11-29 00:53:12,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536642892] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:53:12,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904706052] [2023-11-29 00:53:12,411 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:53:12,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:53:12,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:53:12,412 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:53:12,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 00:53:12,507 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 00:53:12,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:53:12,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 00:53:12,510 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:53:12,555 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 00:53:12,555 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:53:12,588 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 00:53:12,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904706052] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:53:12,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:53:12,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2023-11-29 00:53:12,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778901050] [2023-11-29 00:53:12,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:53:12,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 00:53:12,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:53:12,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 00:53:12,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-11-29 00:53:12,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 107 [2023-11-29 00:53:12,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 134 transitions, 569 flow. Second operand has 14 states, 14 states have (on average 50.142857142857146) internal successors, (702), 14 states have internal predecessors, (702), 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) [2023-11-29 00:53:12,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:53:12,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 107 [2023-11-29 00:53:12,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:53:13,280 INFO L124 PetriNetUnfolderBase]: 1297/2310 cut-off events. [2023-11-29 00:53:13,280 INFO L125 PetriNetUnfolderBase]: For 175/175 co-relation queries the response was YES. [2023-11-29 00:53:13,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4352 conditions, 2310 events. 1297/2310 cut-off events. For 175/175 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 13607 event pairs, 991 based on Foata normal form. 4/1659 useless extension candidates. Maximal degree in co-relation 4213. Up to 1785 conditions per place. [2023-11-29 00:53:13,320 INFO L140 encePairwiseOnDemand]: 94/107 looper letters, 49 selfloop transitions, 47 changer transitions 0/142 dead transitions. [2023-11-29 00:53:13,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 142 transitions, 816 flow [2023-11-29 00:53:13,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 00:53:13,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-29 00:53:13,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1273 transitions. [2023-11-29 00:53:13,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4957165109034268 [2023-11-29 00:53:13,325 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1273 transitions. [2023-11-29 00:53:13,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1273 transitions. [2023-11-29 00:53:13,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:53:13,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1273 transitions. [2023-11-29 00:53:13,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 53.041666666666664) internal successors, (1273), 24 states have internal predecessors, (1273), 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) [2023-11-29 00:53:13,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 107.0) internal successors, (2675), 25 states have internal predecessors, (2675), 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) [2023-11-29 00:53:13,335 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 107.0) internal successors, (2675), 25 states have internal predecessors, (2675), 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) [2023-11-29 00:53:13,335 INFO L175 Difference]: Start difference. First operand has 114 places, 134 transitions, 569 flow. Second operand 24 states and 1273 transitions. [2023-11-29 00:53:13,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 142 transitions, 816 flow [2023-11-29 00:53:13,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 142 transitions, 788 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 00:53:13,339 INFO L231 Difference]: Finished difference. Result has 135 places, 142 transitions, 714 flow [2023-11-29 00:53:13,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=535, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=714, PETRI_PLACES=135, PETRI_TRANSITIONS=142} [2023-11-29 00:53:13,340 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 33 predicate places. [2023-11-29 00:53:13,340 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 142 transitions, 714 flow [2023-11-29 00:53:13,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 50.142857142857146) internal successors, (702), 14 states have internal predecessors, (702), 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) [2023-11-29 00:53:13,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:53:13,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:53:13,345 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 00:53:13,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:53:13,542 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-29 00:53:13,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:53:13,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1684921452, now seen corresponding path program 1 times [2023-11-29 00:53:13,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:53:13,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803201224] [2023-11-29 00:53:13,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:53:13,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:53:13,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:53:13,825 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:53:13,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:53:13,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803201224] [2023-11-29 00:53:13,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803201224] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:53:13,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678047313] [2023-11-29 00:53:13,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:53:13,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:53:13,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:53:13,827 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:53:13,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 00:53:13,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:53:13,953 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 00:53:13,956 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:53:13,982 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 00:53:14,002 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 00:53:14,052 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 00:53:14,052 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-29 00:53:14,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 00:53:14,111 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-11-29 00:53:14,117 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:53:14,117 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:53:14,242 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:53:14,242 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2023-11-29 00:53:14,253 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:53:14,253 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 35 [2023-11-29 00:53:14,260 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2023-11-29 00:53:14,306 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:53:14,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678047313] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:53:14,306 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:53:14,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-11-29 00:53:14,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170279763] [2023-11-29 00:53:14,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:53:14,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 00:53:14,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:53:14,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 00:53:14,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2023-11-29 00:53:14,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 107 [2023-11-29 00:53:14,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 142 transitions, 714 flow. Second operand has 15 states, 15 states have (on average 50.666666666666664) internal successors, (760), 15 states have internal predecessors, (760), 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) [2023-11-29 00:53:14,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:53:14,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 107 [2023-11-29 00:53:14,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:53:15,152 INFO L124 PetriNetUnfolderBase]: 1295/2313 cut-off events. [2023-11-29 00:53:15,153 INFO L125 PetriNetUnfolderBase]: For 198/198 co-relation queries the response was YES. [2023-11-29 00:53:15,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4405 conditions, 2313 events. 1295/2313 cut-off events. For 198/198 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 13573 event pairs, 991 based on Foata normal form. 0/1654 useless extension candidates. Maximal degree in co-relation 4318. Up to 1762 conditions per place. [2023-11-29 00:53:15,169 INFO L140 encePairwiseOnDemand]: 92/107 looper letters, 72 selfloop transitions, 27 changer transitions 0/143 dead transitions. [2023-11-29 00:53:15,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 143 transitions, 914 flow [2023-11-29 00:53:15,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 00:53:15,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 00:53:15,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 601 transitions. [2023-11-29 00:53:15,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106202209005948 [2023-11-29 00:53:15,173 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 601 transitions. [2023-11-29 00:53:15,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 601 transitions. [2023-11-29 00:53:15,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:53:15,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 601 transitions. [2023-11-29 00:53:15,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 54.63636363636363) internal successors, (601), 11 states have internal predecessors, (601), 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) [2023-11-29 00:53:15,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 107.0) internal successors, (1284), 12 states have internal predecessors, (1284), 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) [2023-11-29 00:53:15,178 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 107.0) internal successors, (1284), 12 states have internal predecessors, (1284), 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) [2023-11-29 00:53:15,178 INFO L175 Difference]: Start difference. First operand has 135 places, 142 transitions, 714 flow. Second operand 11 states and 601 transitions. [2023-11-29 00:53:15,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 143 transitions, 914 flow [2023-11-29 00:53:15,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 143 transitions, 803 flow, removed 13 selfloop flow, removed 10 redundant places. [2023-11-29 00:53:15,185 INFO L231 Difference]: Finished difference. Result has 134 places, 141 transitions, 655 flow [2023-11-29 00:53:15,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=601, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=655, PETRI_PLACES=134, PETRI_TRANSITIONS=141} [2023-11-29 00:53:15,186 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 32 predicate places. [2023-11-29 00:53:15,186 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 141 transitions, 655 flow [2023-11-29 00:53:15,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 50.666666666666664) internal successors, (760), 15 states have internal predecessors, (760), 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) [2023-11-29 00:53:15,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:53:15,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:53:15,193 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 00:53:15,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:53:15,392 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-29 00:53:15,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:53:15,393 INFO L85 PathProgramCache]: Analyzing trace with hash 692893235, now seen corresponding path program 1 times [2023-11-29 00:53:15,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:53:15,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743267770] [2023-11-29 00:53:15,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:53:15,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:53:15,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:53:15,669 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:53:15,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:53:15,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743267770] [2023-11-29 00:53:15,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743267770] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:53:15,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279360541] [2023-11-29 00:53:15,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:53:15,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:53:15,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:53:15,671 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:53:15,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 00:53:15,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:53:15,784 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 00:53:15,786 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:53:15,795 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 00:53:15,809 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 00:53:15,846 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 00:53:15,846 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-29 00:53:15,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 00:53:15,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-29 00:53:15,906 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:53:15,906 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:53:15,997 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:53:15,998 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2023-11-29 00:53:16,007 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:53:16,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2023-11-29 00:53:16,014 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-11-29 00:53:16,058 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:53:16,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279360541] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:53:16,058 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:53:16,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-11-29 00:53:16,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606318091] [2023-11-29 00:53:16,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:53:16,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 00:53:16,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:53:16,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 00:53:16,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=142, Unknown=1, NotChecked=0, Total=182 [2023-11-29 00:53:16,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 107 [2023-11-29 00:53:16,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 141 transitions, 655 flow. Second operand has 14 states, 14 states have (on average 38.785714285714285) internal successors, (543), 14 states have internal predecessors, (543), 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) [2023-11-29 00:53:16,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:53:16,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 107 [2023-11-29 00:53:16,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:53:16,883 INFO L124 PetriNetUnfolderBase]: 1295/2312 cut-off events. [2023-11-29 00:53:16,883 INFO L125 PetriNetUnfolderBase]: For 156/156 co-relation queries the response was YES. [2023-11-29 00:53:16,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4402 conditions, 2312 events. 1295/2312 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 13565 event pairs, 991 based on Foata normal form. 1/1657 useless extension candidates. Maximal degree in co-relation 4319. Up to 1772 conditions per place. [2023-11-29 00:53:16,926 INFO L140 encePairwiseOnDemand]: 92/107 looper letters, 86 selfloop transitions, 28 changer transitions 0/144 dead transitions. [2023-11-29 00:53:16,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 144 transitions, 887 flow [2023-11-29 00:53:16,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 00:53:16,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 00:53:16,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 481 transitions. [2023-11-29 00:53:16,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4086661002548853 [2023-11-29 00:53:16,929 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 481 transitions. [2023-11-29 00:53:16,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 481 transitions. [2023-11-29 00:53:16,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:53:16,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 481 transitions. [2023-11-29 00:53:16,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 43.72727272727273) internal successors, (481), 11 states have internal predecessors, (481), 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) [2023-11-29 00:53:16,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 107.0) internal successors, (1284), 12 states have internal predecessors, (1284), 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) [2023-11-29 00:53:16,935 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 107.0) internal successors, (1284), 12 states have internal predecessors, (1284), 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) [2023-11-29 00:53:16,935 INFO L175 Difference]: Start difference. First operand has 134 places, 141 transitions, 655 flow. Second operand 11 states and 481 transitions. [2023-11-29 00:53:16,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 144 transitions, 887 flow [2023-11-29 00:53:16,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 144 transitions, 877 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:53:16,942 INFO L231 Difference]: Finished difference. Result has 141 places, 140 transitions, 697 flow [2023-11-29 00:53:16,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=641, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=697, PETRI_PLACES=141, PETRI_TRANSITIONS=140} [2023-11-29 00:53:16,942 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 39 predicate places. [2023-11-29 00:53:16,943 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 140 transitions, 697 flow [2023-11-29 00:53:16,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 38.785714285714285) internal successors, (543), 14 states have internal predecessors, (543), 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) [2023-11-29 00:53:16,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:53:16,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:53:16,948 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 00:53:17,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:53:17,144 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-29 00:53:17,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:53:17,144 INFO L85 PathProgramCache]: Analyzing trace with hash 4853757, now seen corresponding path program 1 times [2023-11-29 00:53:17,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:53:17,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836602500] [2023-11-29 00:53:17,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:53:17,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:53:17,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:53:17,519 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:53:17,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:53:17,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836602500] [2023-11-29 00:53:17,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836602500] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:53:17,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977515870] [2023-11-29 00:53:17,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:53:17,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:53:17,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:53:17,521 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:53:17,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 00:53:17,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:53:17,656 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-29 00:53:17,660 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:53:17,672 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-11-29 00:53:17,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:17,680 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:53:17,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:17,685 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 00:53:17,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:17,690 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:53:17,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:17,696 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 00:53:17,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:17,701 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:53:17,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:17,709 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:53:17,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:17,717 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 00:53:17,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:17,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:53:17,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:17,730 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 00:53:17,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:17,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 00:53:17,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:17,743 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:53:17,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:17,754 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:53:17,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:17,762 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 00:53:17,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:17,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:53:17,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:17,778 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 00:53:17,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:17,789 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 00:53:17,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:17,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-29 00:53:17,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:17,808 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:53:17,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:17,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 00:53:17,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:17,821 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 00:53:17,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:17,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:53:17,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:17,834 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:53:17,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:17,839 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 00:53:17,863 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 00:53:17,918 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-29 00:53:17,918 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-11-29 00:53:17,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 00:53:17,995 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 00:53:17,995 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-29 00:53:18,022 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 00:53:18,070 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-11-29 00:53:18,121 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:53:18,121 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:53:18,155 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_256 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int#4| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_256) c_~A~0.base) c_~A~0.offset)))) is different from false [2023-11-29 00:53:18,339 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:53:18,339 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2023-11-29 00:53:18,351 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:53:18,351 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 143 treesize of output 135 [2023-11-29 00:53:18,362 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 25 [2023-11-29 00:53:18,374 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2023-11-29 00:53:18,478 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-11-29 00:53:18,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [977515870] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:53:18,479 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:53:18,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2023-11-29 00:53:18,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611284244] [2023-11-29 00:53:18,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:53:18,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 00:53:18,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:53:18,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 00:53:18,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=386, Unknown=2, NotChecked=40, Total=506 [2023-11-29 00:53:18,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 107 [2023-11-29 00:53:18,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 140 transitions, 697 flow. Second operand has 23 states, 23 states have (on average 34.56521739130435) internal successors, (795), 23 states have internal predecessors, (795), 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) [2023-11-29 00:53:18,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:53:18,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 107 [2023-11-29 00:53:18,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:53:19,486 INFO L124 PetriNetUnfolderBase]: 1294/2308 cut-off events. [2023-11-29 00:53:19,486 INFO L125 PetriNetUnfolderBase]: For 186/186 co-relation queries the response was YES. [2023-11-29 00:53:19,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4418 conditions, 2308 events. 1294/2308 cut-off events. For 186/186 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 13547 event pairs, 991 based on Foata normal form. 1/1656 useless extension candidates. Maximal degree in co-relation 4334. Up to 1769 conditions per place. [2023-11-29 00:53:19,503 INFO L140 encePairwiseOnDemand]: 87/107 looper letters, 88 selfloop transitions, 31 changer transitions 0/145 dead transitions. [2023-11-29 00:53:19,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 145 transitions, 943 flow [2023-11-29 00:53:19,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 00:53:19,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-29 00:53:19,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 549 transitions. [2023-11-29 00:53:19,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664886515353805 [2023-11-29 00:53:19,507 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 549 transitions. [2023-11-29 00:53:19,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 549 transitions. [2023-11-29 00:53:19,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:53:19,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 549 transitions. [2023-11-29 00:53:19,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 39.214285714285715) internal successors, (549), 14 states have internal predecessors, (549), 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) [2023-11-29 00:53:19,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 107.0) internal successors, (1605), 15 states have internal predecessors, (1605), 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) [2023-11-29 00:53:19,513 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 107.0) internal successors, (1605), 15 states have internal predecessors, (1605), 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) [2023-11-29 00:53:19,513 INFO L175 Difference]: Start difference. First operand has 141 places, 140 transitions, 697 flow. Second operand 14 states and 549 transitions. [2023-11-29 00:53:19,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 145 transitions, 943 flow [2023-11-29 00:53:19,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 145 transitions, 885 flow, removed 0 selfloop flow, removed 10 redundant places. [2023-11-29 00:53:19,519 INFO L231 Difference]: Finished difference. Result has 145 places, 139 transitions, 709 flow [2023-11-29 00:53:19,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=633, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=709, PETRI_PLACES=145, PETRI_TRANSITIONS=139} [2023-11-29 00:53:19,520 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 43 predicate places. [2023-11-29 00:53:19,520 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 139 transitions, 709 flow [2023-11-29 00:53:19,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 34.56521739130435) internal successors, (795), 23 states have internal predecessors, (795), 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) [2023-11-29 00:53:19,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:53:19,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:53:19,527 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 00:53:19,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:53:19,722 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-29 00:53:19,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:53:19,722 INFO L85 PathProgramCache]: Analyzing trace with hash 150467532, now seen corresponding path program 1 times [2023-11-29 00:53:19,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:53:19,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074704995] [2023-11-29 00:53:19,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:53:19,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:53:19,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:53:20,119 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:53:20,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:53:20,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074704995] [2023-11-29 00:53:20,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074704995] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:53:20,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253360158] [2023-11-29 00:53:20,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:53:20,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:53:20,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:53:20,123 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:53:20,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 00:53:20,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:53:20,247 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-29 00:53:20,249 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:53:20,261 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-11-29 00:53:20,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:20,269 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:53:20,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:20,279 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 00:53:20,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:20,292 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-29 00:53:20,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:20,301 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 00:53:20,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:20,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:53:20,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:20,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 00:53:20,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:20,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:53:20,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:20,326 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 00:53:20,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:20,331 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:53:20,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:20,335 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 00:53:20,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:20,341 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:53:20,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:20,351 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 00:53:20,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:20,356 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:53:20,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:20,361 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 00:53:20,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:20,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:53:20,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:20,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 00:53:20,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:20,376 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:53:20,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:20,394 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 00:53:20,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:20,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:53:20,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:20,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 00:53:20,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:20,416 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:53:20,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:20,421 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 00:53:20,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:20,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:53:20,449 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 00:53:20,499 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-11-29 00:53:20,499 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-11-29 00:53:20,535 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 00:53:20,610 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-11-29 00:53:20,610 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2023-11-29 00:53:20,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 00:53:20,659 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-29 00:53:20,712 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:53:20,713 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:53:24,951 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:53:24,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 26 [2023-11-29 00:53:24,961 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:53:24,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 59 [2023-11-29 00:53:24,969 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2023-11-29 00:53:24,974 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 42 [2023-11-29 00:53:25,075 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:53:25,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253360158] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:53:25,076 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:53:25,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2023-11-29 00:53:25,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860718578] [2023-11-29 00:53:25,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:53:25,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-29 00:53:25,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:53:25,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-29 00:53:25,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=459, Unknown=6, NotChecked=0, Total=552 [2023-11-29 00:53:25,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 107 [2023-11-29 00:53:25,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 139 transitions, 709 flow. Second operand has 24 states, 24 states have (on average 34.583333333333336) internal successors, (830), 24 states have internal predecessors, (830), 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) [2023-11-29 00:53:25,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:53:25,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 107 [2023-11-29 00:53:25,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:53:26,480 INFO L124 PetriNetUnfolderBase]: 1294/2308 cut-off events. [2023-11-29 00:53:26,480 INFO L125 PetriNetUnfolderBase]: For 200/200 co-relation queries the response was YES. [2023-11-29 00:53:26,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4437 conditions, 2308 events. 1294/2308 cut-off events. For 200/200 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 13552 event pairs, 991 based on Foata normal form. 4/1661 useless extension candidates. Maximal degree in co-relation 4361. Up to 1773 conditions per place. [2023-11-29 00:53:26,497 INFO L140 encePairwiseOnDemand]: 86/107 looper letters, 82 selfloop transitions, 35 changer transitions 1/144 dead transitions. [2023-11-29 00:53:26,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 144 transitions, 967 flow [2023-11-29 00:53:26,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 00:53:26,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-29 00:53:26,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 641 transitions. [2023-11-29 00:53:26,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3523914238592633 [2023-11-29 00:53:26,501 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 641 transitions. [2023-11-29 00:53:26,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 641 transitions. [2023-11-29 00:53:26,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:53:26,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 641 transitions. [2023-11-29 00:53:26,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 37.705882352941174) internal successors, (641), 17 states have internal predecessors, (641), 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) [2023-11-29 00:53:26,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 107.0) internal successors, (1926), 18 states have internal predecessors, (1926), 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) [2023-11-29 00:53:26,508 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 107.0) internal successors, (1926), 18 states have internal predecessors, (1926), 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) [2023-11-29 00:53:26,508 INFO L175 Difference]: Start difference. First operand has 145 places, 139 transitions, 709 flow. Second operand 17 states and 641 transitions. [2023-11-29 00:53:26,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 144 transitions, 967 flow [2023-11-29 00:53:26,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 144 transitions, 919 flow, removed 2 selfloop flow, removed 8 redundant places. [2023-11-29 00:53:26,515 INFO L231 Difference]: Finished difference. Result has 155 places, 142 transitions, 760 flow [2023-11-29 00:53:26,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=659, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=760, PETRI_PLACES=155, PETRI_TRANSITIONS=142} [2023-11-29 00:53:26,516 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 53 predicate places. [2023-11-29 00:53:26,517 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 142 transitions, 760 flow [2023-11-29 00:53:26,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 34.583333333333336) internal successors, (830), 24 states have internal predecessors, (830), 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) [2023-11-29 00:53:26,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:53:26,517 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] [2023-11-29 00:53:26,524 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 00:53:26,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:53:26,722 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-29 00:53:26,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:53:26,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1979652480, now seen corresponding path program 1 times [2023-11-29 00:53:26,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:53:26,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763429488] [2023-11-29 00:53:26,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:53:26,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:53:26,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:53:26,807 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 00:53:26,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:53:26,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763429488] [2023-11-29 00:53:26,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763429488] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:53:26,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:53:26,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 00:53:26,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072413974] [2023-11-29 00:53:26,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:53:26,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:53:26,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:53:26,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:53:26,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:53:26,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 107 [2023-11-29 00:53:26,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 142 transitions, 760 flow. Second operand has 5 states, 5 states have (on average 42.0) internal successors, (210), 5 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) [2023-11-29 00:53:26,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:53:26,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 107 [2023-11-29 00:53:26,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:53:27,247 INFO L124 PetriNetUnfolderBase]: 1294/2302 cut-off events. [2023-11-29 00:53:27,248 INFO L125 PetriNetUnfolderBase]: For 257/257 co-relation queries the response was YES. [2023-11-29 00:53:27,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4433 conditions, 2302 events. 1294/2302 cut-off events. For 257/257 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 13489 event pairs, 991 based on Foata normal form. 2/1657 useless extension candidates. Maximal degree in co-relation 4397. Up to 1818 conditions per place. [2023-11-29 00:53:27,259 INFO L140 encePairwiseOnDemand]: 93/107 looper letters, 92 selfloop transitions, 20 changer transitions 0/144 dead transitions. [2023-11-29 00:53:27,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 144 transitions, 988 flow [2023-11-29 00:53:27,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:53:27,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 00:53:27,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 305 transitions. [2023-11-29 00:53:27,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4750778816199377 [2023-11-29 00:53:27,262 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 305 transitions. [2023-11-29 00:53:27,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 305 transitions. [2023-11-29 00:53:27,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:53:27,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 305 transitions. [2023-11-29 00:53:27,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 50.833333333333336) internal successors, (305), 6 states have internal predecessors, (305), 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) [2023-11-29 00:53:27,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 107.0) internal successors, (749), 7 states have internal predecessors, (749), 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) [2023-11-29 00:53:27,265 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 107.0) internal successors, (749), 7 states have internal predecessors, (749), 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) [2023-11-29 00:53:27,265 INFO L175 Difference]: Start difference. First operand has 155 places, 142 transitions, 760 flow. Second operand 6 states and 305 transitions. [2023-11-29 00:53:27,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 144 transitions, 988 flow [2023-11-29 00:53:27,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 144 transitions, 897 flow, removed 4 selfloop flow, removed 13 redundant places. [2023-11-29 00:53:27,272 INFO L231 Difference]: Finished difference. Result has 148 places, 144 transitions, 739 flow [2023-11-29 00:53:27,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=662, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=739, PETRI_PLACES=148, PETRI_TRANSITIONS=144} [2023-11-29 00:53:27,273 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 46 predicate places. [2023-11-29 00:53:27,273 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 144 transitions, 739 flow [2023-11-29 00:53:27,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.0) internal successors, (210), 5 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) [2023-11-29 00:53:27,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:53:27,274 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1] [2023-11-29 00:53:27,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 00:53:27,274 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-29 00:53:27,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:53:27,274 INFO L85 PathProgramCache]: Analyzing trace with hash -876037248, now seen corresponding path program 1 times [2023-11-29 00:53:27,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:53:27,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328893961] [2023-11-29 00:53:27,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:53:27,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:53:27,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:53:27,443 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-29 00:53:27,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:53:27,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328893961] [2023-11-29 00:53:27,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328893961] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:53:27,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317962486] [2023-11-29 00:53:27,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:53:27,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:53:27,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:53:27,445 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:53:27,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 00:53:27,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:53:27,578 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 00:53:27,579 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:53:27,682 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-29 00:53:27,682 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:53:27,786 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-29 00:53:27,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317962486] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:53:27,787 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:53:27,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2023-11-29 00:53:27,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746064083] [2023-11-29 00:53:27,787 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:53:27,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 00:53:27,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:53:27,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 00:53:27,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2023-11-29 00:53:27,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 107 [2023-11-29 00:53:27,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 144 transitions, 739 flow. Second operand has 19 states, 19 states have (on average 50.21052631578947) internal successors, (954), 19 states have internal predecessors, (954), 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) [2023-11-29 00:53:27,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:53:27,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 107 [2023-11-29 00:53:27,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:53:28,935 INFO L124 PetriNetUnfolderBase]: 2574/4540 cut-off events. [2023-11-29 00:53:28,935 INFO L125 PetriNetUnfolderBase]: For 360/360 co-relation queries the response was YES. [2023-11-29 00:53:28,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8564 conditions, 4540 events. 2574/4540 cut-off events. For 360/360 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 28604 event pairs, 1982 based on Foata normal form. 2/3276 useless extension candidates. Maximal degree in co-relation 8510. Up to 1794 conditions per place. [2023-11-29 00:53:28,955 INFO L140 encePairwiseOnDemand]: 97/107 looper letters, 103 selfloop transitions, 51 changer transitions 0/197 dead transitions. [2023-11-29 00:53:28,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 197 transitions, 1276 flow [2023-11-29 00:53:28,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 00:53:28,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 00:53:28,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 603 transitions. [2023-11-29 00:53:28,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5635514018691589 [2023-11-29 00:53:28,958 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 603 transitions. [2023-11-29 00:53:28,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 603 transitions. [2023-11-29 00:53:28,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:53:28,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 603 transitions. [2023-11-29 00:53:28,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 60.3) internal successors, (603), 10 states have internal predecessors, (603), 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) [2023-11-29 00:53:28,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 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) [2023-11-29 00:53:28,962 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 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) [2023-11-29 00:53:28,962 INFO L175 Difference]: Start difference. First operand has 148 places, 144 transitions, 739 flow. Second operand 10 states and 603 transitions. [2023-11-29 00:53:28,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 197 transitions, 1276 flow [2023-11-29 00:53:28,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 197 transitions, 1237 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-11-29 00:53:28,971 INFO L231 Difference]: Finished difference. Result has 154 places, 150 transitions, 874 flow [2023-11-29 00:53:28,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=713, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=874, PETRI_PLACES=154, PETRI_TRANSITIONS=150} [2023-11-29 00:53:28,972 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 52 predicate places. [2023-11-29 00:53:28,972 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 150 transitions, 874 flow [2023-11-29 00:53:28,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 50.21052631578947) internal successors, (954), 19 states have internal predecessors, (954), 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) [2023-11-29 00:53:28,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:53:28,973 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] [2023-11-29 00:53:28,977 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 00:53:29,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:53:29,174 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-29 00:53:29,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:53:29,174 INFO L85 PathProgramCache]: Analyzing trace with hash 589766568, now seen corresponding path program 1 times [2023-11-29 00:53:29,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:53:29,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098921798] [2023-11-29 00:53:29,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:53:29,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:53:29,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:53:29,239 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 00:53:29,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:53:29,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098921798] [2023-11-29 00:53:29,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098921798] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:53:29,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:53:29,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:53:29,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601272590] [2023-11-29 00:53:29,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:53:29,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:53:29,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:53:29,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:53:29,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:53:29,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 107 [2023-11-29 00:53:29,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 150 transitions, 874 flow. Second operand has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 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) [2023-11-29 00:53:29,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:53:29,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 107 [2023-11-29 00:53:29,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:53:30,398 INFO L124 PetriNetUnfolderBase]: 5168/8318 cut-off events. [2023-11-29 00:53:30,398 INFO L125 PetriNetUnfolderBase]: For 378/378 co-relation queries the response was YES. [2023-11-29 00:53:30,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15915 conditions, 8318 events. 5168/8318 cut-off events. For 378/378 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 54771 event pairs, 1880 based on Foata normal form. 244/6200 useless extension candidates. Maximal degree in co-relation 15863. Up to 5507 conditions per place. [2023-11-29 00:53:30,436 INFO L140 encePairwiseOnDemand]: 101/107 looper letters, 144 selfloop transitions, 4 changer transitions 0/191 dead transitions. [2023-11-29 00:53:30,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 191 transitions, 1256 flow [2023-11-29 00:53:30,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:53:30,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:53:30,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 306 transitions. [2023-11-29 00:53:30,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7149532710280374 [2023-11-29 00:53:30,438 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 306 transitions. [2023-11-29 00:53:30,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 306 transitions. [2023-11-29 00:53:30,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:53:30,438 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 306 transitions. [2023-11-29 00:53:30,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 76.5) internal successors, (306), 4 states have internal predecessors, (306), 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) [2023-11-29 00:53:30,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 107.0) internal successors, (535), 5 states have internal predecessors, (535), 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) [2023-11-29 00:53:30,440 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 107.0) internal successors, (535), 5 states have internal predecessors, (535), 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) [2023-11-29 00:53:30,440 INFO L175 Difference]: Start difference. First operand has 154 places, 150 transitions, 874 flow. Second operand 4 states and 306 transitions. [2023-11-29 00:53:30,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 191 transitions, 1256 flow [2023-11-29 00:53:30,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 191 transitions, 1226 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:53:30,446 INFO L231 Difference]: Finished difference. Result has 158 places, 153 transitions, 873 flow [2023-11-29 00:53:30,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=844, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=873, PETRI_PLACES=158, PETRI_TRANSITIONS=153} [2023-11-29 00:53:30,447 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 56 predicate places. [2023-11-29 00:53:30,447 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 153 transitions, 873 flow [2023-11-29 00:53:30,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 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) [2023-11-29 00:53:30,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:53:30,448 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] [2023-11-29 00:53:30,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 00:53:30,448 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-29 00:53:30,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:53:30,448 INFO L85 PathProgramCache]: Analyzing trace with hash -264885914, now seen corresponding path program 1 times [2023-11-29 00:53:30,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:53:30,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835779129] [2023-11-29 00:53:30,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:53:30,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:53:30,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:53:30,497 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 00:53:30,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:53:30,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835779129] [2023-11-29 00:53:30,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835779129] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:53:30,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:53:30,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:53:30,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134548883] [2023-11-29 00:53:30,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:53:30,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:53:30,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:53:30,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:53:30,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:53:30,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 107 [2023-11-29 00:53:30,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 153 transitions, 873 flow. Second operand has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 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) [2023-11-29 00:53:30,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:53:30,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 107 [2023-11-29 00:53:30,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:53:31,939 INFO L124 PetriNetUnfolderBase]: 6548/11404 cut-off events. [2023-11-29 00:53:31,939 INFO L125 PetriNetUnfolderBase]: For 4061/4397 co-relation queries the response was YES. [2023-11-29 00:53:31,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24785 conditions, 11404 events. 6548/11404 cut-off events. For 4061/4397 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 84867 event pairs, 2932 based on Foata normal form. 0/8702 useless extension candidates. Maximal degree in co-relation 24730. Up to 5521 conditions per place. [2023-11-29 00:53:32,003 INFO L140 encePairwiseOnDemand]: 102/107 looper letters, 128 selfloop transitions, 3 changer transitions 0/176 dead transitions. [2023-11-29 00:53:32,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 176 transitions, 1202 flow [2023-11-29 00:53:32,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:53:32,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:53:32,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 236 transitions. [2023-11-29 00:53:32,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.735202492211838 [2023-11-29 00:53:32,005 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 236 transitions. [2023-11-29 00:53:32,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 236 transitions. [2023-11-29 00:53:32,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:53:32,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 236 transitions. [2023-11-29 00:53:32,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:53:32,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 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) [2023-11-29 00:53:32,006 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 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) [2023-11-29 00:53:32,006 INFO L175 Difference]: Start difference. First operand has 158 places, 153 transitions, 873 flow. Second operand 3 states and 236 transitions. [2023-11-29 00:53:32,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 176 transitions, 1202 flow [2023-11-29 00:53:32,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 176 transitions, 1196 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:53:32,050 INFO L231 Difference]: Finished difference. Result has 160 places, 155 transitions, 891 flow [2023-11-29 00:53:32,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=870, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=891, PETRI_PLACES=160, PETRI_TRANSITIONS=155} [2023-11-29 00:53:32,051 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 58 predicate places. [2023-11-29 00:53:32,051 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 155 transitions, 891 flow [2023-11-29 00:53:32,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 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) [2023-11-29 00:53:32,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:53:32,052 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] [2023-11-29 00:53:32,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 00:53:32,052 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-29 00:53:32,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:53:32,052 INFO L85 PathProgramCache]: Analyzing trace with hash -264885919, now seen corresponding path program 1 times [2023-11-29 00:53:32,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:53:32,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409989603] [2023-11-29 00:53:32,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:53:32,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:53:32,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:53:32,199 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 00:53:32,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:53:32,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409989603] [2023-11-29 00:53:32,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409989603] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:53:32,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334754210] [2023-11-29 00:53:32,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:53:32,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:53:32,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:53:32,201 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:53:32,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 00:53:32,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:53:32,326 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 00:53:32,328 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:53:32,409 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 00:53:32,409 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:53:32,495 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 00:53:32,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334754210] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:53:32,495 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:53:32,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-11-29 00:53:32,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364080436] [2023-11-29 00:53:32,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:53:32,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 00:53:32,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:53:32,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 00:53:32,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-11-29 00:53:32,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 107 [2023-11-29 00:53:32,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 155 transitions, 891 flow. Second operand has 15 states, 15 states have (on average 50.06666666666667) internal successors, (751), 15 states have internal predecessors, (751), 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) [2023-11-29 00:53:32,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:53:32,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 107 [2023-11-29 00:53:32,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:53:33,873 INFO L124 PetriNetUnfolderBase]: 4099/7044 cut-off events. [2023-11-29 00:53:33,873 INFO L125 PetriNetUnfolderBase]: For 3047/3416 co-relation queries the response was YES. [2023-11-29 00:53:33,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16020 conditions, 7044 events. 4099/7044 cut-off events. For 3047/3416 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 44294 event pairs, 2906 based on Foata normal form. 82/5610 useless extension candidates. Maximal degree in co-relation 15964. Up to 4776 conditions per place. [2023-11-29 00:53:33,920 INFO L140 encePairwiseOnDemand]: 94/107 looper letters, 118 selfloop transitions, 53 changer transitions 0/213 dead transitions. [2023-11-29 00:53:33,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 213 transitions, 1460 flow [2023-11-29 00:53:33,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 00:53:33,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 00:53:33,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 646 transitions. [2023-11-29 00:53:33,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5488530161427357 [2023-11-29 00:53:33,922 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 646 transitions. [2023-11-29 00:53:33,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 646 transitions. [2023-11-29 00:53:33,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:53:33,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 646 transitions. [2023-11-29 00:53:33,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 58.72727272727273) internal successors, (646), 11 states have internal predecessors, (646), 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) [2023-11-29 00:53:33,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 107.0) internal successors, (1284), 12 states have internal predecessors, (1284), 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) [2023-11-29 00:53:33,927 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 107.0) internal successors, (1284), 12 states have internal predecessors, (1284), 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) [2023-11-29 00:53:33,927 INFO L175 Difference]: Start difference. First operand has 160 places, 155 transitions, 891 flow. Second operand 11 states and 646 transitions. [2023-11-29 00:53:33,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 213 transitions, 1460 flow [2023-11-29 00:53:33,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 213 transitions, 1455 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:53:33,938 INFO L231 Difference]: Finished difference. Result has 171 places, 157 transitions, 1014 flow [2023-11-29 00:53:33,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=888, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1014, PETRI_PLACES=171, PETRI_TRANSITIONS=157} [2023-11-29 00:53:33,939 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 69 predicate places. [2023-11-29 00:53:33,940 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 157 transitions, 1014 flow [2023-11-29 00:53:33,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 50.06666666666667) internal successors, (751), 15 states have internal predecessors, (751), 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) [2023-11-29 00:53:33,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:53:33,940 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 2, 2, 2, 1, 1, 1] [2023-11-29 00:53:33,947 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 00:53:34,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 00:53:34,141 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-29 00:53:34,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:53:34,141 INFO L85 PathProgramCache]: Analyzing trace with hash 512237857, now seen corresponding path program 2 times [2023-11-29 00:53:34,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:53:34,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712723099] [2023-11-29 00:53:34,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:53:34,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:53:34,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:53:34,567 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 32 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:53:34,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:53:34,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712723099] [2023-11-29 00:53:34,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712723099] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:53:34,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463288543] [2023-11-29 00:53:34,568 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:53:34,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:53:34,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:53:34,569 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:53:34,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 00:53:34,662 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 00:53:34,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:53:34,663 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 00:53:34,664 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:53:34,731 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-29 00:53:34,732 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:53:34,776 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-29 00:53:34,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463288543] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:53:34,776 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:53:34,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 3, 3] total 20 [2023-11-29 00:53:34,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533647345] [2023-11-29 00:53:34,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:53:34,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-29 00:53:34,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:53:34,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-29 00:53:34,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2023-11-29 00:53:34,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 107 [2023-11-29 00:53:34,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 157 transitions, 1014 flow. Second operand has 21 states, 21 states have (on average 50.23809523809524) internal successors, (1055), 21 states have internal predecessors, (1055), 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) [2023-11-29 00:53:34,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:53:34,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 107 [2023-11-29 00:53:34,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:53:36,414 INFO L124 PetriNetUnfolderBase]: 3726/6573 cut-off events. [2023-11-29 00:53:36,414 INFO L125 PetriNetUnfolderBase]: For 3672/4036 co-relation queries the response was YES. [2023-11-29 00:53:36,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15746 conditions, 6573 events. 3726/6573 cut-off events. For 3672/4036 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 43134 event pairs, 3011 based on Foata normal form. 4/5299 useless extension candidates. Maximal degree in co-relation 15688. Up to 5283 conditions per place. [2023-11-29 00:53:36,467 INFO L140 encePairwiseOnDemand]: 95/107 looper letters, 54 selfloop transitions, 70 changer transitions 0/167 dead transitions. [2023-11-29 00:53:36,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 167 transitions, 1373 flow [2023-11-29 00:53:36,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 00:53:36,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-29 00:53:36,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1026 transitions. [2023-11-29 00:53:36,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5046728971962616 [2023-11-29 00:53:36,469 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1026 transitions. [2023-11-29 00:53:36,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1026 transitions. [2023-11-29 00:53:36,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:53:36,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1026 transitions. [2023-11-29 00:53:36,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 54.0) internal successors, (1026), 19 states have internal predecessors, (1026), 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) [2023-11-29 00:53:36,473 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 107.0) internal successors, (2140), 20 states have internal predecessors, (2140), 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) [2023-11-29 00:53:36,474 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 107.0) internal successors, (2140), 20 states have internal predecessors, (2140), 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) [2023-11-29 00:53:36,474 INFO L175 Difference]: Start difference. First operand has 171 places, 157 transitions, 1014 flow. Second operand 19 states and 1026 transitions. [2023-11-29 00:53:36,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 167 transitions, 1373 flow [2023-11-29 00:53:36,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 167 transitions, 1216 flow, removed 2 selfloop flow, removed 12 redundant places. [2023-11-29 00:53:36,482 INFO L231 Difference]: Finished difference. Result has 175 places, 167 transitions, 1108 flow [2023-11-29 00:53:36,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=858, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1108, PETRI_PLACES=175, PETRI_TRANSITIONS=167} [2023-11-29 00:53:36,483 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 73 predicate places. [2023-11-29 00:53:36,483 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 167 transitions, 1108 flow [2023-11-29 00:53:36,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.23809523809524) internal successors, (1055), 21 states have internal predecessors, (1055), 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) [2023-11-29 00:53:36,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:53:36,483 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:53:36,489 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 00:53:36,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 00:53:36,684 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-29 00:53:36,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:53:36,684 INFO L85 PathProgramCache]: Analyzing trace with hash -974248754, now seen corresponding path program 1 times [2023-11-29 00:53:36,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:53:36,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956074080] [2023-11-29 00:53:36,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:53:36,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:53:36,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:53:36,825 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 00:53:36,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:53:36,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956074080] [2023-11-29 00:53:36,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956074080] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:53:36,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736679158] [2023-11-29 00:53:36,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:53:36,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:53:36,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:53:36,826 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:53:36,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 00:53:36,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:53:36,949 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 00:53:36,951 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:53:37,045 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 00:53:37,045 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:53:37,136 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 00:53:37,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736679158] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:53:37,136 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:53:37,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-11-29 00:53:37,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178701626] [2023-11-29 00:53:37,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:53:37,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 00:53:37,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:53:37,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 00:53:37,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-11-29 00:53:37,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 107 [2023-11-29 00:53:37,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 167 transitions, 1108 flow. Second operand has 15 states, 15 states have (on average 51.0) internal successors, (765), 15 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:53:37,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:53:37,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 107 [2023-11-29 00:53:37,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:53:38,385 INFO L124 PetriNetUnfolderBase]: 3440/6197 cut-off events. [2023-11-29 00:53:38,385 INFO L125 PetriNetUnfolderBase]: For 3170/3269 co-relation queries the response was YES. [2023-11-29 00:53:38,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14244 conditions, 6197 events. 3440/6197 cut-off events. For 3170/3269 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 43315 event pairs, 2517 based on Foata normal form. 38/4891 useless extension candidates. Maximal degree in co-relation 14190. Up to 4292 conditions per place. [2023-11-29 00:53:38,423 INFO L140 encePairwiseOnDemand]: 94/107 looper letters, 108 selfloop transitions, 62 changer transitions 0/213 dead transitions. [2023-11-29 00:53:38,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 213 transitions, 1629 flow [2023-11-29 00:53:38,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 00:53:38,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 00:53:38,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 650 transitions. [2023-11-29 00:53:38,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5522514868309261 [2023-11-29 00:53:38,426 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 650 transitions. [2023-11-29 00:53:38,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 650 transitions. [2023-11-29 00:53:38,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:53:38,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 650 transitions. [2023-11-29 00:53:38,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 59.09090909090909) internal successors, (650), 11 states have internal predecessors, (650), 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) [2023-11-29 00:53:38,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 107.0) internal successors, (1284), 12 states have internal predecessors, (1284), 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) [2023-11-29 00:53:38,429 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 107.0) internal successors, (1284), 12 states have internal predecessors, (1284), 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) [2023-11-29 00:53:38,429 INFO L175 Difference]: Start difference. First operand has 175 places, 167 transitions, 1108 flow. Second operand 11 states and 650 transitions. [2023-11-29 00:53:38,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 213 transitions, 1629 flow [2023-11-29 00:53:38,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 213 transitions, 1431 flow, removed 4 selfloop flow, removed 12 redundant places. [2023-11-29 00:53:38,443 INFO L231 Difference]: Finished difference. Result has 175 places, 169 transitions, 1055 flow [2023-11-29 00:53:38,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=910, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1055, PETRI_PLACES=175, PETRI_TRANSITIONS=169} [2023-11-29 00:53:38,444 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 73 predicate places. [2023-11-29 00:53:38,444 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 169 transitions, 1055 flow [2023-11-29 00:53:38,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 51.0) internal successors, (765), 15 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:53:38,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:53:38,445 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] [2023-11-29 00:53:38,449 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 00:53:38,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 00:53:38,645 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-29 00:53:38,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:53:38,645 INFO L85 PathProgramCache]: Analyzing trace with hash 752959078, now seen corresponding path program 1 times [2023-11-29 00:53:38,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:53:38,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591936253] [2023-11-29 00:53:38,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:53:38,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:53:38,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:53:38,715 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 00:53:38,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:53:38,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591936253] [2023-11-29 00:53:38,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591936253] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:53:38,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:53:38,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:53:38,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314994597] [2023-11-29 00:53:38,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:53:38,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:53:38,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:53:38,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:53:38,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:53:38,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 107 [2023-11-29 00:53:38,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 169 transitions, 1055 flow. Second operand has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 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) [2023-11-29 00:53:38,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:53:38,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 107 [2023-11-29 00:53:38,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:53:40,714 INFO L124 PetriNetUnfolderBase]: 7765/13609 cut-off events. [2023-11-29 00:53:40,715 INFO L125 PetriNetUnfolderBase]: For 9678/10094 co-relation queries the response was YES. [2023-11-29 00:53:40,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31986 conditions, 13609 events. 7765/13609 cut-off events. For 9678/10094 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 102241 event pairs, 3943 based on Foata normal form. 252/11205 useless extension candidates. Maximal degree in co-relation 31901. Up to 7032 conditions per place. [2023-11-29 00:53:40,786 INFO L140 encePairwiseOnDemand]: 102/107 looper letters, 195 selfloop transitions, 3 changer transitions 0/238 dead transitions. [2023-11-29 00:53:40,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 238 transitions, 1744 flow [2023-11-29 00:53:40,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:53:40,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:53:40,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 310 transitions. [2023-11-29 00:53:40,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7242990654205608 [2023-11-29 00:53:40,787 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 310 transitions. [2023-11-29 00:53:40,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 310 transitions. [2023-11-29 00:53:40,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:53:40,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 310 transitions. [2023-11-29 00:53:40,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 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) [2023-11-29 00:53:40,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 107.0) internal successors, (535), 5 states have internal predecessors, (535), 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) [2023-11-29 00:53:40,789 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 107.0) internal successors, (535), 5 states have internal predecessors, (535), 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) [2023-11-29 00:53:40,789 INFO L175 Difference]: Start difference. First operand has 175 places, 169 transitions, 1055 flow. Second operand 4 states and 310 transitions. [2023-11-29 00:53:40,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 238 transitions, 1744 flow [2023-11-29 00:53:40,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 238 transitions, 1627 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-11-29 00:53:40,802 INFO L231 Difference]: Finished difference. Result has 172 places, 171 transitions, 960 flow [2023-11-29 00:53:40,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=938, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=960, PETRI_PLACES=172, PETRI_TRANSITIONS=171} [2023-11-29 00:53:40,802 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 70 predicate places. [2023-11-29 00:53:40,802 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 171 transitions, 960 flow [2023-11-29 00:53:40,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 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) [2023-11-29 00:53:40,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:53:40,803 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:53:40,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 00:53:40,803 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-29 00:53:40,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:53:40,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1825733474, now seen corresponding path program 1 times [2023-11-29 00:53:40,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:53:40,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188132493] [2023-11-29 00:53:40,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:53:40,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:53:40,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:53:41,625 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 00:53:41,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:53:41,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188132493] [2023-11-29 00:53:41,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188132493] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:53:41,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972524536] [2023-11-29 00:53:41,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:53:41,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:53:41,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:53:41,627 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:53:41,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 00:53:41,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:53:41,790 INFO L262 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-29 00:53:41,794 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:53:41,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-11-29 00:53:41,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:41,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-29 00:53:41,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:41,826 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:53:41,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:41,833 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 00:53:41,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:41,843 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 00:53:41,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:41,849 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:53:41,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:41,859 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 00:53:41,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:41,865 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:53:41,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:41,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 00:53:41,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:41,875 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:53:41,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:41,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:53:41,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:41,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 00:53:41,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:41,899 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:53:41,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:41,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 00:53:41,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:41,917 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:53:41,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:41,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 00:53:41,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:41,928 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:53:41,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:41,933 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 00:53:41,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:41,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:53:41,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:41,944 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 00:53:41,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:41,949 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 00:53:41,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:41,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:53:41,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:41,963 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 00:53:41,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:41,969 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:53:42,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 00:53:42,108 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-29 00:53:42,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-11-29 00:53:42,142 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 00:53:42,175 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 00:53:42,229 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 00:53:42,230 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-29 00:53:42,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 00:53:42,264 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 00:53:42,327 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 00:53:42,327 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:53:42,405 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_636 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int#4| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_636) c_~A~0.base) (+ c_~A~0.offset 4))))) is different from false [2023-11-29 00:53:42,613 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:53:42,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-11-29 00:53:42,624 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:53:42,625 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 159 treesize of output 147 [2023-11-29 00:53:42,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2023-11-29 00:53:42,641 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 24 [2023-11-29 00:53:42,888 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 4 not checked. [2023-11-29 00:53:42,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972524536] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:53:42,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:53:42,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-11-29 00:53:42,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074913235] [2023-11-29 00:53:42,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:53:42,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 00:53:42,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:53:42,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 00:53:42,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=514, Unknown=1, NotChecked=46, Total=650 [2023-11-29 00:53:42,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 107 [2023-11-29 00:53:42,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 171 transitions, 960 flow. Second operand has 26 states, 26 states have (on average 46.96153846153846) internal successors, (1221), 26 states have internal predecessors, (1221), 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) [2023-11-29 00:53:42,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:53:42,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 107 [2023-11-29 00:53:42,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:53:45,207 INFO L124 PetriNetUnfolderBase]: 6200/10291 cut-off events. [2023-11-29 00:53:45,207 INFO L125 PetriNetUnfolderBase]: For 9367/10580 co-relation queries the response was YES. [2023-11-29 00:53:45,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27236 conditions, 10291 events. 6200/10291 cut-off events. For 9367/10580 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 69161 event pairs, 2980 based on Foata normal form. 263/8972 useless extension candidates. Maximal degree in co-relation 27154. Up to 4856 conditions per place. [2023-11-29 00:53:45,277 INFO L140 encePairwiseOnDemand]: 92/107 looper letters, 168 selfloop transitions, 55 changer transitions 0/262 dead transitions. [2023-11-29 00:53:45,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 262 transitions, 1797 flow [2023-11-29 00:53:45,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 00:53:45,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-29 00:53:45,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 807 transitions. [2023-11-29 00:53:45,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.502803738317757 [2023-11-29 00:53:45,279 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 807 transitions. [2023-11-29 00:53:45,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 807 transitions. [2023-11-29 00:53:45,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:53:45,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 807 transitions. [2023-11-29 00:53:45,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 53.8) internal successors, (807), 15 states have internal predecessors, (807), 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) [2023-11-29 00:53:45,283 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 107.0) internal successors, (1712), 16 states have internal predecessors, (1712), 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) [2023-11-29 00:53:45,284 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 107.0) internal successors, (1712), 16 states have internal predecessors, (1712), 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) [2023-11-29 00:53:45,284 INFO L175 Difference]: Start difference. First operand has 172 places, 171 transitions, 960 flow. Second operand 15 states and 807 transitions. [2023-11-29 00:53:45,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 262 transitions, 1797 flow [2023-11-29 00:53:45,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 262 transitions, 1789 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:53:45,307 INFO L231 Difference]: Finished difference. Result has 187 places, 177 transitions, 1147 flow [2023-11-29 00:53:45,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=958, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1147, PETRI_PLACES=187, PETRI_TRANSITIONS=177} [2023-11-29 00:53:45,308 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 85 predicate places. [2023-11-29 00:53:45,308 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 177 transitions, 1147 flow [2023-11-29 00:53:45,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 46.96153846153846) internal successors, (1221), 26 states have internal predecessors, (1221), 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) [2023-11-29 00:53:45,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:53:45,309 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:53:45,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-29 00:53:45,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:53:45,515 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-29 00:53:45,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:53:45,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1825733473, now seen corresponding path program 1 times [2023-11-29 00:53:45,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:53:45,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762336851] [2023-11-29 00:53:45,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:53:45,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:53:45,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:53:46,209 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 00:53:46,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:53:46,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762336851] [2023-11-29 00:53:46,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762336851] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:53:46,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280320332] [2023-11-29 00:53:46,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:53:46,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:53:46,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:53:46,210 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:53:46,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 00:53:46,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:53:46,336 INFO L262 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-29 00:53:46,340 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:53:46,351 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-29 00:53:46,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:46,361 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 00:53:46,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:46,367 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:53:46,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:46,370 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 00:53:46,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:46,375 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 00:53:46,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:46,381 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:53:46,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:46,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 00:53:46,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:46,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:53:46,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:46,398 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:53:46,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:46,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 00:53:46,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:46,408 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:53:46,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:46,415 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 00:53:46,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:46,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:53:46,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:46,425 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 00:53:46,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:46,431 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:53:46,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:46,438 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 00:53:46,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:46,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:53:46,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:46,447 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 00:53:46,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:46,455 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:53:46,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:46,463 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 00:53:46,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:46,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-29 00:53:46,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:46,480 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 00:53:46,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:46,487 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 00:53:46,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:53:46,491 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:53:46,517 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 00:53:46,550 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-29 00:53:46,551 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-11-29 00:53:46,565 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 00:53:46,588 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 00:53:46,616 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 00:53:46,616 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-29 00:53:46,624 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 00:53:46,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 00:53:46,692 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 00:53:46,692 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:53:46,952 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:53:46,952 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2023-11-29 00:53:46,959 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:53:46,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 65 [2023-11-29 00:53:46,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2023-11-29 00:53:46,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 42 [2023-11-29 00:53:47,217 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 00:53:47,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280320332] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:53:47,217 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:53:47,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 18 [2023-11-29 00:53:47,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235711696] [2023-11-29 00:53:47,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:53:47,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 00:53:47,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:53:47,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 00:53:47,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=319, Unknown=3, NotChecked=0, Total=380 [2023-11-29 00:53:51,349 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 00:53:51,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 107 [2023-11-29 00:53:51,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 177 transitions, 1147 flow. Second operand has 20 states, 20 states have (on average 47.15) internal successors, (943), 20 states have internal predecessors, (943), 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) [2023-11-29 00:53:51,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:53:51,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 107 [2023-11-29 00:53:51,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:53:53,613 INFO L124 PetriNetUnfolderBase]: 5938/9989 cut-off events. [2023-11-29 00:53:53,614 INFO L125 PetriNetUnfolderBase]: For 11716/12719 co-relation queries the response was YES. [2023-11-29 00:53:53,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27422 conditions, 9989 events. 5938/9989 cut-off events. For 11716/12719 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 66941 event pairs, 2814 based on Foata normal form. 328/8824 useless extension candidates. Maximal degree in co-relation 27336. Up to 4856 conditions per place. [2023-11-29 00:53:53,677 INFO L140 encePairwiseOnDemand]: 92/107 looper letters, 167 selfloop transitions, 55 changer transitions 0/261 dead transitions. [2023-11-29 00:53:53,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 261 transitions, 1920 flow [2023-11-29 00:53:53,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 00:53:53,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-29 00:53:53,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 806 transitions. [2023-11-29 00:53:53,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5021806853582554 [2023-11-29 00:53:53,679 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 806 transitions. [2023-11-29 00:53:53,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 806 transitions. [2023-11-29 00:53:53,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:53:53,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 806 transitions. [2023-11-29 00:53:53,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 53.733333333333334) internal successors, (806), 15 states have internal predecessors, (806), 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) [2023-11-29 00:53:53,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 107.0) internal successors, (1712), 16 states have internal predecessors, (1712), 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) [2023-11-29 00:53:53,682 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 107.0) internal successors, (1712), 16 states have internal predecessors, (1712), 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) [2023-11-29 00:53:53,682 INFO L175 Difference]: Start difference. First operand has 187 places, 177 transitions, 1147 flow. Second operand 15 states and 806 transitions. [2023-11-29 00:53:53,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 261 transitions, 1920 flow [2023-11-29 00:53:53,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 261 transitions, 1820 flow, removed 0 selfloop flow, removed 9 redundant places. [2023-11-29 00:53:53,697 INFO L231 Difference]: Finished difference. Result has 192 places, 176 transitions, 1153 flow [2023-11-29 00:53:53,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=1043, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1153, PETRI_PLACES=192, PETRI_TRANSITIONS=176} [2023-11-29 00:53:53,698 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 90 predicate places. [2023-11-29 00:53:53,698 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 176 transitions, 1153 flow [2023-11-29 00:53:53,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 47.15) internal successors, (943), 20 states have internal predecessors, (943), 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) [2023-11-29 00:53:53,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:53:53,698 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:53:53,703 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 00:53:53,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-29 00:53:53,899 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-29 00:53:53,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:53:53,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1825733477, now seen corresponding path program 2 times [2023-11-29 00:53:53,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:53:53,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108108259] [2023-11-29 00:53:53,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:53:53,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:53:53,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:53:54,486 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:53:54,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:53:54,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108108259] [2023-11-29 00:53:54,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108108259] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:53:54,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804051657] [2023-11-29 00:53:54,486 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:53:54,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:53:54,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:53:54,487 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:53:54,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 00:53:54,684 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:53:54,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:53:54,686 INFO L262 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-29 00:53:54,689 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:53:54,729 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 00:53:54,818 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 00:53:54,847 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 00:53:54,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-29 00:53:54,857 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 00:53:54,880 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-29 00:53:54,943 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 00:53:54,943 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:53:55,131 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:53:55,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2023-11-29 00:53:55,140 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:53:55,141 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 37 [2023-11-29 00:53:55,157 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 00:53:55,276 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 00:53:55,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804051657] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:53:55,276 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:53:55,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 8] total 25 [2023-11-29 00:53:55,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359014853] [2023-11-29 00:53:55,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:53:55,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 00:53:55,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:53:55,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 00:53:55,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=572, Unknown=2, NotChecked=0, Total=650 [2023-11-29 00:53:55,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 107 [2023-11-29 00:53:55,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 176 transitions, 1153 flow. Second operand has 26 states, 26 states have (on average 50.11538461538461) internal successors, (1303), 26 states have internal predecessors, (1303), 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) [2023-11-29 00:53:55,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:53:55,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 107 [2023-11-29 00:53:55,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:53:58,052 INFO L124 PetriNetUnfolderBase]: 5417/9424 cut-off events. [2023-11-29 00:53:58,052 INFO L125 PetriNetUnfolderBase]: For 13361/14274 co-relation queries the response was YES. [2023-11-29 00:53:58,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27024 conditions, 9424 events. 5417/9424 cut-off events. For 13361/14274 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 65860 event pairs, 1906 based on Foata normal form. 219/8414 useless extension candidates. Maximal degree in co-relation 26941. Up to 2527 conditions per place. [2023-11-29 00:53:58,129 INFO L140 encePairwiseOnDemand]: 87/107 looper letters, 146 selfloop transitions, 64 changer transitions 0/253 dead transitions. [2023-11-29 00:53:58,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 253 transitions, 1912 flow [2023-11-29 00:53:58,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 00:53:58,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-29 00:53:58,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1150 transitions. [2023-11-29 00:53:58,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.511793502447708 [2023-11-29 00:53:58,131 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1150 transitions. [2023-11-29 00:53:58,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1150 transitions. [2023-11-29 00:53:58,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:53:58,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1150 transitions. [2023-11-29 00:53:58,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 54.76190476190476) internal successors, (1150), 21 states have internal predecessors, (1150), 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) [2023-11-29 00:53:58,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 107.0) internal successors, (2354), 22 states have internal predecessors, (2354), 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) [2023-11-29 00:53:58,135 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 107.0) internal successors, (2354), 22 states have internal predecessors, (2354), 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) [2023-11-29 00:53:58,135 INFO L175 Difference]: Start difference. First operand has 192 places, 176 transitions, 1153 flow. Second operand 21 states and 1150 transitions. [2023-11-29 00:53:58,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 253 transitions, 1912 flow [2023-11-29 00:53:58,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 253 transitions, 1813 flow, removed 1 selfloop flow, removed 12 redundant places. [2023-11-29 00:53:58,153 INFO L231 Difference]: Finished difference. Result has 202 places, 180 transitions, 1246 flow [2023-11-29 00:53:58,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=1056, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1246, PETRI_PLACES=202, PETRI_TRANSITIONS=180} [2023-11-29 00:53:58,153 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 100 predicate places. [2023-11-29 00:53:58,154 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 180 transitions, 1246 flow [2023-11-29 00:53:58,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 50.11538461538461) internal successors, (1303), 26 states have internal predecessors, (1303), 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) [2023-11-29 00:53:58,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:53:58,154 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:53:58,160 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 00:53:58,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-29 00:53:58,354 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-29 00:53:58,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:53:58,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1825733476, now seen corresponding path program 1 times [2023-11-29 00:53:58,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:53:58,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380080726] [2023-11-29 00:53:58,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:53:58,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:53:58,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:53:58,845 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 00:53:58,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:53:58,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380080726] [2023-11-29 00:53:58,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380080726] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:53:58,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078363196] [2023-11-29 00:53:58,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:53:58,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:53:58,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:53:58,847 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:53:58,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 00:53:59,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:53:59,034 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-29 00:53:59,036 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:53:59,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 00:53:59,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 00:53:59,121 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 00:53:59,121 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-29 00:53:59,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 00:53:59,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 00:53:59,200 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 00:53:59,200 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:53:59,246 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_825 (Array Int Int))) (< (select (select (store |c_#memory_int#4| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_825) c_~B~0.base) (+ 4 c_~B~0.offset)) 4294967296)) is different from false [2023-11-29 00:53:59,302 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:53:59,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2023-11-29 00:53:59,310 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:53:59,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 31 [2023-11-29 00:53:59,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 00:53:59,419 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 4 not checked. [2023-11-29 00:53:59,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078363196] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:53:59,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:53:59,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 8] total 17 [2023-11-29 00:53:59,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727835618] [2023-11-29 00:53:59,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:53:59,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 00:53:59,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:53:59,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 00:53:59,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=230, Unknown=1, NotChecked=30, Total=306 [2023-11-29 00:53:59,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 107 [2023-11-29 00:53:59,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 180 transitions, 1246 flow. Second operand has 18 states, 18 states have (on average 47.111111111111114) internal successors, (848), 18 states have internal predecessors, (848), 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) [2023-11-29 00:53:59,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:53:59,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 107 [2023-11-29 00:53:59,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:54:01,514 INFO L124 PetriNetUnfolderBase]: 5689/9555 cut-off events. [2023-11-29 00:54:01,514 INFO L125 PetriNetUnfolderBase]: For 17558/18586 co-relation queries the response was YES. [2023-11-29 00:54:01,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30128 conditions, 9555 events. 5689/9555 cut-off events. For 17558/18586 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 63975 event pairs, 1906 based on Foata normal form. 241/8813 useless extension candidates. Maximal degree in co-relation 30038. Up to 2716 conditions per place. [2023-11-29 00:54:01,572 INFO L140 encePairwiseOnDemand]: 87/107 looper letters, 160 selfloop transitions, 61 changer transitions 0/260 dead transitions. [2023-11-29 00:54:01,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 260 transitions, 2009 flow [2023-11-29 00:54:01,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 00:54:01,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-29 00:54:01,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 800 transitions. [2023-11-29 00:54:01,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4984423676012461 [2023-11-29 00:54:01,574 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 800 transitions. [2023-11-29 00:54:01,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 800 transitions. [2023-11-29 00:54:01,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:54:01,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 800 transitions. [2023-11-29 00:54:01,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 53.333333333333336) internal successors, (800), 15 states have internal predecessors, (800), 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) [2023-11-29 00:54:01,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 107.0) internal successors, (1712), 16 states have internal predecessors, (1712), 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) [2023-11-29 00:54:01,576 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 107.0) internal successors, (1712), 16 states have internal predecessors, (1712), 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) [2023-11-29 00:54:01,577 INFO L175 Difference]: Start difference. First operand has 202 places, 180 transitions, 1246 flow. Second operand 15 states and 800 transitions. [2023-11-29 00:54:01,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 260 transitions, 2009 flow [2023-11-29 00:54:01,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 260 transitions, 1988 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-29 00:54:01,595 INFO L231 Difference]: Finished difference. Result has 213 places, 179 transitions, 1343 flow [2023-11-29 00:54:01,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=1221, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1343, PETRI_PLACES=213, PETRI_TRANSITIONS=179} [2023-11-29 00:54:01,595 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 111 predicate places. [2023-11-29 00:54:01,595 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 179 transitions, 1343 flow [2023-11-29 00:54:01,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 47.111111111111114) internal successors, (848), 18 states have internal predecessors, (848), 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) [2023-11-29 00:54:01,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:54:01,596 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:54:01,600 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 00:54:01,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-29 00:54:01,796 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-29 00:54:01,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:54:01,796 INFO L85 PathProgramCache]: Analyzing trace with hash -2115882796, now seen corresponding path program 2 times [2023-11-29 00:54:01,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:54:01,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179498182] [2023-11-29 00:54:01,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:54:01,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:54:01,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:54:01,884 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-29 00:54:01,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:54:01,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179498182] [2023-11-29 00:54:01,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179498182] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:54:01,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489297552] [2023-11-29 00:54:01,884 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:54:01,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:54:01,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:54:01,885 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:54:01,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 00:54:02,069 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:54:02,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:54:02,071 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 00:54:02,072 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:54:02,102 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-29 00:54:02,102 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:54:02,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489297552] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:54:02,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:54:02,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2023-11-29 00:54:02,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703987899] [2023-11-29 00:54:02,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:54:02,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:54:02,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:54:02,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:54:02,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:54:02,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 107 [2023-11-29 00:54:02,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 179 transitions, 1343 flow. Second operand has 5 states, 5 states have (on average 56.0) internal successors, (280), 5 states have internal predecessors, (280), 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) [2023-11-29 00:54:02,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:54:02,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 107 [2023-11-29 00:54:02,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:54:03,562 INFO L124 PetriNetUnfolderBase]: 6017/9805 cut-off events. [2023-11-29 00:54:03,562 INFO L125 PetriNetUnfolderBase]: For 26179/27036 co-relation queries the response was YES. [2023-11-29 00:54:03,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33704 conditions, 9805 events. 6017/9805 cut-off events. For 26179/27036 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 65507 event pairs, 1816 based on Foata normal form. 456/9296 useless extension candidates. Maximal degree in co-relation 33617. Up to 3400 conditions per place. [2023-11-29 00:54:03,638 INFO L140 encePairwiseOnDemand]: 102/107 looper letters, 180 selfloop transitions, 9 changer transitions 0/230 dead transitions. [2023-11-29 00:54:03,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 230 transitions, 2087 flow [2023-11-29 00:54:03,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:54:03,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:54:03,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 298 transitions. [2023-11-29 00:54:03,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6962616822429907 [2023-11-29 00:54:03,640 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 298 transitions. [2023-11-29 00:54:03,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 298 transitions. [2023-11-29 00:54:03,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:54:03,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 298 transitions. [2023-11-29 00:54:03,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 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) [2023-11-29 00:54:03,641 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 107.0) internal successors, (535), 5 states have internal predecessors, (535), 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) [2023-11-29 00:54:03,641 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 107.0) internal successors, (535), 5 states have internal predecessors, (535), 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) [2023-11-29 00:54:03,641 INFO L175 Difference]: Start difference. First operand has 213 places, 179 transitions, 1343 flow. Second operand 4 states and 298 transitions. [2023-11-29 00:54:03,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 230 transitions, 2087 flow [2023-11-29 00:54:03,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 230 transitions, 1977 flow, removed 3 selfloop flow, removed 12 redundant places. [2023-11-29 00:54:03,674 INFO L231 Difference]: Finished difference. Result has 203 places, 178 transitions, 1259 flow [2023-11-29 00:54:03,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=1241, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1259, PETRI_PLACES=203, PETRI_TRANSITIONS=178} [2023-11-29 00:54:03,675 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 101 predicate places. [2023-11-29 00:54:03,675 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 178 transitions, 1259 flow [2023-11-29 00:54:03,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 56.0) internal successors, (280), 5 states have internal predecessors, (280), 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) [2023-11-29 00:54:03,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:54:03,675 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:54:03,680 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 00:54:03,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-29 00:54:03,876 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-29 00:54:03,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:54:03,876 INFO L85 PathProgramCache]: Analyzing trace with hash 2111795331, now seen corresponding path program 1 times [2023-11-29 00:54:03,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:54:03,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894487135] [2023-11-29 00:54:03,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:54:03,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:54:03,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:54:03,951 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-29 00:54:03,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:54:03,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894487135] [2023-11-29 00:54:03,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894487135] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:54:03,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:54:03,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:54:03,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405029069] [2023-11-29 00:54:03,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:54:03,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:54:03,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:54:03,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:54:03,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:54:03,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 107 [2023-11-29 00:54:03,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 178 transitions, 1259 flow. Second operand has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 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) [2023-11-29 00:54:03,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:54:03,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 107 [2023-11-29 00:54:03,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:54:05,340 INFO L124 PetriNetUnfolderBase]: 5845/10443 cut-off events. [2023-11-29 00:54:05,340 INFO L125 PetriNetUnfolderBase]: For 27561/28205 co-relation queries the response was YES. [2023-11-29 00:54:05,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34099 conditions, 10443 events. 5845/10443 cut-off events. For 27561/28205 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 74060 event pairs, 3058 based on Foata normal form. 404/10062 useless extension candidates. Maximal degree in co-relation 34013. Up to 6472 conditions per place. [2023-11-29 00:54:05,492 INFO L140 encePairwiseOnDemand]: 101/107 looper letters, 165 selfloop transitions, 10 changer transitions 0/215 dead transitions. [2023-11-29 00:54:05,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 215 transitions, 1787 flow [2023-11-29 00:54:05,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:54:05,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:54:05,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 292 transitions. [2023-11-29 00:54:05,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6822429906542056 [2023-11-29 00:54:05,493 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 292 transitions. [2023-11-29 00:54:05,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 292 transitions. [2023-11-29 00:54:05,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:54:05,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 292 transitions. [2023-11-29 00:54:05,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 73.0) internal successors, (292), 4 states have internal predecessors, (292), 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) [2023-11-29 00:54:05,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 107.0) internal successors, (535), 5 states have internal predecessors, (535), 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) [2023-11-29 00:54:05,495 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 107.0) internal successors, (535), 5 states have internal predecessors, (535), 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) [2023-11-29 00:54:05,495 INFO L175 Difference]: Start difference. First operand has 203 places, 178 transitions, 1259 flow. Second operand 4 states and 292 transitions. [2023-11-29 00:54:05,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 215 transitions, 1787 flow [2023-11-29 00:54:05,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 215 transitions, 1737 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 00:54:05,513 INFO L231 Difference]: Finished difference. Result has 205 places, 179 transitions, 1280 flow [2023-11-29 00:54:05,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=1241, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1280, PETRI_PLACES=205, PETRI_TRANSITIONS=179} [2023-11-29 00:54:05,514 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 103 predicate places. [2023-11-29 00:54:05,514 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 179 transitions, 1280 flow [2023-11-29 00:54:05,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 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) [2023-11-29 00:54:05,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:54:05,515 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-11-29 00:54:05,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-29 00:54:05,515 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-29 00:54:05,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:54:05,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1167856096, now seen corresponding path program 1 times [2023-11-29 00:54:05,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:54:05,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345811127] [2023-11-29 00:54:05,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:54:05,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:54:05,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:54:05,597 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-29 00:54:05,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:54:05,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345811127] [2023-11-29 00:54:05,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345811127] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:54:05,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351746607] [2023-11-29 00:54:05,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:54:05,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:54:05,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:54:05,599 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:54:05,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 00:54:05,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:54:05,770 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 00:54:05,771 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:54:05,792 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-29 00:54:05,792 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:54:05,824 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-29 00:54:05,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351746607] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:54:05,825 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:54:05,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-29 00:54:05,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920067465] [2023-11-29 00:54:05,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:54:05,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:54:05,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:54:05,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:54:05,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:54:05,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 107 [2023-11-29 00:54:05,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 179 transitions, 1280 flow. Second operand has 12 states, 12 states have (on average 55.25) internal successors, (663), 12 states have internal predecessors, (663), 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) [2023-11-29 00:54:05,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:54:05,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 107 [2023-11-29 00:54:05,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:54:08,041 INFO L124 PetriNetUnfolderBase]: 8543/13841 cut-off events. [2023-11-29 00:54:08,041 INFO L125 PetriNetUnfolderBase]: For 41059/42253 co-relation queries the response was YES. [2023-11-29 00:54:08,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47648 conditions, 13841 events. 8543/13841 cut-off events. For 41059/42253 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 96361 event pairs, 2930 based on Foata normal form. 358/12714 useless extension candidates. Maximal degree in co-relation 47560. Up to 6100 conditions per place. [2023-11-29 00:54:08,145 INFO L140 encePairwiseOnDemand]: 102/107 looper letters, 320 selfloop transitions, 15 changer transitions 0/378 dead transitions. [2023-11-29 00:54:08,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 378 transitions, 3268 flow [2023-11-29 00:54:08,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 00:54:08,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 00:54:08,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 747 transitions. [2023-11-29 00:54:08,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6981308411214954 [2023-11-29 00:54:08,146 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 747 transitions. [2023-11-29 00:54:08,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 747 transitions. [2023-11-29 00:54:08,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:54:08,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 747 transitions. [2023-11-29 00:54:08,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 74.7) internal successors, (747), 10 states have internal predecessors, (747), 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) [2023-11-29 00:54:08,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 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) [2023-11-29 00:54:08,149 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 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) [2023-11-29 00:54:08,149 INFO L175 Difference]: Start difference. First operand has 205 places, 179 transitions, 1280 flow. Second operand 10 states and 747 transitions. [2023-11-29 00:54:08,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 378 transitions, 3268 flow [2023-11-29 00:54:08,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 378 transitions, 3229 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:54:08,183 INFO L231 Difference]: Finished difference. Result has 216 places, 188 transitions, 1355 flow [2023-11-29 00:54:08,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=1271, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1355, PETRI_PLACES=216, PETRI_TRANSITIONS=188} [2023-11-29 00:54:08,184 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 114 predicate places. [2023-11-29 00:54:08,184 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 188 transitions, 1355 flow [2023-11-29 00:54:08,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 55.25) internal successors, (663), 12 states have internal predecessors, (663), 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) [2023-11-29 00:54:08,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:54:08,184 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:54:08,189 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 00:54:08,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-29 00:54:08,385 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-29 00:54:08,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:54:08,385 INFO L85 PathProgramCache]: Analyzing trace with hash -185097558, now seen corresponding path program 1 times [2023-11-29 00:54:08,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:54:08,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222616291] [2023-11-29 00:54:08,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:54:08,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:54:08,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:54:08,574 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 00:54:08,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:54:08,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222616291] [2023-11-29 00:54:08,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222616291] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:54:08,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896803414] [2023-11-29 00:54:08,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:54:08,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:54:08,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:54:08,576 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:54:08,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 00:54:08,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:54:08,737 INFO L262 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 00:54:08,738 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:54:08,888 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 00:54:08,888 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:54:09,043 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 00:54:09,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896803414] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:54:09,043 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:54:09,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 25 [2023-11-29 00:54:09,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884097327] [2023-11-29 00:54:09,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:54:09,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 00:54:09,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:54:09,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 00:54:09,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=514, Unknown=0, NotChecked=0, Total=650 [2023-11-29 00:54:09,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 107 [2023-11-29 00:54:09,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 188 transitions, 1355 flow. Second operand has 26 states, 26 states have (on average 46.84615384615385) internal successors, (1218), 26 states have internal predecessors, (1218), 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) [2023-11-29 00:54:09,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:54:09,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 107 [2023-11-29 00:54:09,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:54:13,186 INFO L124 PetriNetUnfolderBase]: 15536/24710 cut-off events. [2023-11-29 00:54:13,186 INFO L125 PetriNetUnfolderBase]: For 76996/78514 co-relation queries the response was YES. [2023-11-29 00:54:13,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88150 conditions, 24710 events. 15536/24710 cut-off events. For 76996/78514 co-relation queries the response was YES. Maximal size of possible extension queue 619. Compared 170113 event pairs, 9269 based on Foata normal form. 720/24134 useless extension candidates. Maximal degree in co-relation 88059. Up to 14123 conditions per place. [2023-11-29 00:54:13,401 INFO L140 encePairwiseOnDemand]: 92/107 looper letters, 208 selfloop transitions, 78 changer transitions 0/325 dead transitions. [2023-11-29 00:54:13,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 325 transitions, 2683 flow [2023-11-29 00:54:13,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 00:54:13,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-29 00:54:13,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 930 transitions. [2023-11-29 00:54:13,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5112699285321606 [2023-11-29 00:54:13,403 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 930 transitions. [2023-11-29 00:54:13,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 930 transitions. [2023-11-29 00:54:13,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:54:13,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 930 transitions. [2023-11-29 00:54:13,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 54.705882352941174) internal successors, (930), 17 states have internal predecessors, (930), 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) [2023-11-29 00:54:13,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 107.0) internal successors, (1926), 18 states have internal predecessors, (1926), 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) [2023-11-29 00:54:13,406 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 107.0) internal successors, (1926), 18 states have internal predecessors, (1926), 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) [2023-11-29 00:54:13,406 INFO L175 Difference]: Start difference. First operand has 216 places, 188 transitions, 1355 flow. Second operand 17 states and 930 transitions. [2023-11-29 00:54:13,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 325 transitions, 2683 flow [2023-11-29 00:54:13,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 325 transitions, 2525 flow, removed 55 selfloop flow, removed 3 redundant places. [2023-11-29 00:54:13,495 INFO L231 Difference]: Finished difference. Result has 233 places, 193 transitions, 1576 flow [2023-11-29 00:54:13,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=1321, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1576, PETRI_PLACES=233, PETRI_TRANSITIONS=193} [2023-11-29 00:54:13,495 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 131 predicate places. [2023-11-29 00:54:13,496 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 193 transitions, 1576 flow [2023-11-29 00:54:13,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 46.84615384615385) internal successors, (1218), 26 states have internal predecessors, (1218), 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) [2023-11-29 00:54:13,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:54:13,496 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 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] [2023-11-29 00:54:13,501 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 00:54:13,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-29 00:54:13,697 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-29 00:54:13,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:54:13,697 INFO L85 PathProgramCache]: Analyzing trace with hash -592618297, now seen corresponding path program 1 times [2023-11-29 00:54:13,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:54:13,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25715250] [2023-11-29 00:54:13,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:54:13,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:54:13,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:54:13,811 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 00:54:13,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:54:13,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25715250] [2023-11-29 00:54:13,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25715250] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:54:13,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214183589] [2023-11-29 00:54:13,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:54:13,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:54:13,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:54:13,812 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:54:13,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 00:54:13,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:54:13,980 INFO L262 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 00:54:13,982 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:54:14,060 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 00:54:14,060 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:54:14,143 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 00:54:14,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1214183589] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:54:14,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:54:14,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-11-29 00:54:14,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009328495] [2023-11-29 00:54:14,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:54:14,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 00:54:14,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:54:14,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 00:54:14,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-11-29 00:54:14,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 107 [2023-11-29 00:54:14,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 193 transitions, 1576 flow. Second operand has 15 states, 15 states have (on average 50.333333333333336) internal successors, (755), 15 states have internal predecessors, (755), 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) [2023-11-29 00:54:14,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:54:14,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 107 [2023-11-29 00:54:14,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:54:17,605 INFO L124 PetriNetUnfolderBase]: 12940/21407 cut-off events. [2023-11-29 00:54:17,605 INFO L125 PetriNetUnfolderBase]: For 90467/92030 co-relation queries the response was YES. [2023-11-29 00:54:17,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77725 conditions, 21407 events. 12940/21407 cut-off events. For 90467/92030 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 151663 event pairs, 7520 based on Foata normal form. 562/20080 useless extension candidates. Maximal degree in co-relation 77621. Up to 13441 conditions per place. [2023-11-29 00:54:17,795 INFO L140 encePairwiseOnDemand]: 94/107 looper letters, 166 selfloop transitions, 65 changer transitions 0/275 dead transitions. [2023-11-29 00:54:17,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 275 transitions, 2603 flow [2023-11-29 00:54:17,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 00:54:17,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 00:54:17,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 703 transitions. [2023-11-29 00:54:17,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5475077881619937 [2023-11-29 00:54:17,796 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 703 transitions. [2023-11-29 00:54:17,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 703 transitions. [2023-11-29 00:54:17,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:54:17,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 703 transitions. [2023-11-29 00:54:17,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 58.583333333333336) internal successors, (703), 12 states have internal predecessors, (703), 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) [2023-11-29 00:54:17,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 107.0) internal successors, (1391), 13 states have internal predecessors, (1391), 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) [2023-11-29 00:54:17,799 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 107.0) internal successors, (1391), 13 states have internal predecessors, (1391), 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) [2023-11-29 00:54:17,799 INFO L175 Difference]: Start difference. First operand has 233 places, 193 transitions, 1576 flow. Second operand 12 states and 703 transitions. [2023-11-29 00:54:17,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 275 transitions, 2603 flow [2023-11-29 00:54:17,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 275 transitions, 2467 flow, removed 4 selfloop flow, removed 12 redundant places. [2023-11-29 00:54:17,875 INFO L231 Difference]: Finished difference. Result has 235 places, 195 transitions, 1632 flow [2023-11-29 00:54:17,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=1444, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1632, PETRI_PLACES=235, PETRI_TRANSITIONS=195} [2023-11-29 00:54:17,876 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 133 predicate places. [2023-11-29 00:54:17,876 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 195 transitions, 1632 flow [2023-11-29 00:54:17,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 50.333333333333336) internal successors, (755), 15 states have internal predecessors, (755), 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) [2023-11-29 00:54:17,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:54:17,876 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:54:17,881 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-29 00:54:18,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-29 00:54:18,077 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-29 00:54:18,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:54:18,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1476751704, now seen corresponding path program 1 times [2023-11-29 00:54:18,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:54:18,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986361108] [2023-11-29 00:54:18,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:54:18,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:54:18,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:54:18,194 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 00:54:18,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:54:18,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986361108] [2023-11-29 00:54:18,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986361108] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:54:18,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:54:18,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 00:54:18,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539340251] [2023-11-29 00:54:18,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:54:18,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:54:18,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:54:18,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:54:18,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:54:18,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 107 [2023-11-29 00:54:18,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 195 transitions, 1632 flow. Second operand has 6 states, 6 states have (on average 50.5) internal successors, (303), 6 states have internal predecessors, (303), 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) [2023-11-29 00:54:18,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:54:18,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 107 [2023-11-29 00:54:18,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:54:22,269 INFO L124 PetriNetUnfolderBase]: 13449/23283 cut-off events. [2023-11-29 00:54:22,269 INFO L125 PetriNetUnfolderBase]: For 98567/100573 co-relation queries the response was YES. [2023-11-29 00:54:22,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86893 conditions, 23283 events. 13449/23283 cut-off events. For 98567/100573 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 180727 event pairs, 4762 based on Foata normal form. 673/22993 useless extension candidates. Maximal degree in co-relation 86782. Up to 14443 conditions per place. [2023-11-29 00:54:22,534 INFO L140 encePairwiseOnDemand]: 96/107 looper letters, 186 selfloop transitions, 19 changer transitions 0/245 dead transitions. [2023-11-29 00:54:22,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 245 transitions, 2462 flow [2023-11-29 00:54:22,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:54:22,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 00:54:22,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 316 transitions. [2023-11-29 00:54:22,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5906542056074766 [2023-11-29 00:54:22,536 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 316 transitions. [2023-11-29 00:54:22,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 316 transitions. [2023-11-29 00:54:22,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:54:22,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 316 transitions. [2023-11-29 00:54:22,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 63.2) internal successors, (316), 5 states have internal predecessors, (316), 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) [2023-11-29 00:54:22,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 107.0) internal successors, (642), 6 states have internal predecessors, (642), 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) [2023-11-29 00:54:22,537 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 107.0) internal successors, (642), 6 states have internal predecessors, (642), 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) [2023-11-29 00:54:22,537 INFO L175 Difference]: Start difference. First operand has 235 places, 195 transitions, 1632 flow. Second operand 5 states and 316 transitions. [2023-11-29 00:54:22,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 245 transitions, 2462 flow [2023-11-29 00:54:22,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 245 transitions, 2379 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-11-29 00:54:22,686 INFO L231 Difference]: Finished difference. Result has 234 places, 198 transitions, 1640 flow [2023-11-29 00:54:22,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=1544, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1640, PETRI_PLACES=234, PETRI_TRANSITIONS=198} [2023-11-29 00:54:22,687 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 132 predicate places. [2023-11-29 00:54:22,687 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 198 transitions, 1640 flow [2023-11-29 00:54:22,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 50.5) internal successors, (303), 6 states have internal predecessors, (303), 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) [2023-11-29 00:54:22,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:54:22,687 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:54:22,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-11-29 00:54:22,687 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-29 00:54:22,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:54:22,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1234451583, now seen corresponding path program 1 times [2023-11-29 00:54:22,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:54:22,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109413031] [2023-11-29 00:54:22,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:54:22,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:54:22,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:54:22,841 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 00:54:22,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:54:22,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109413031] [2023-11-29 00:54:22,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109413031] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:54:22,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:54:22,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 00:54:22,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126607874] [2023-11-29 00:54:22,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:54:22,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:54:22,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:54:22,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:54:22,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:54:23,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 107 [2023-11-29 00:54:23,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 198 transitions, 1640 flow. Second operand has 7 states, 7 states have (on average 48.0) internal successors, (336), 7 states have internal predecessors, (336), 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) [2023-11-29 00:54:23,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:54:23,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 107 [2023-11-29 00:54:23,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:54:30,263 INFO L124 PetriNetUnfolderBase]: 24825/43506 cut-off events. [2023-11-29 00:54:30,264 INFO L125 PetriNetUnfolderBase]: For 178733/181964 co-relation queries the response was YES. [2023-11-29 00:54:30,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163424 conditions, 43506 events. 24825/43506 cut-off events. For 178733/181964 co-relation queries the response was YES. Maximal size of possible extension queue 1239. Compared 373511 event pairs, 19000 based on Foata normal form. 1212/42531 useless extension candidates. Maximal degree in co-relation 163312. Up to 18589 conditions per place. [2023-11-29 00:54:30,796 INFO L140 encePairwiseOnDemand]: 95/107 looper letters, 204 selfloop transitions, 28 changer transitions 0/269 dead transitions. [2023-11-29 00:54:30,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 269 transitions, 2638 flow [2023-11-29 00:54:30,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:54:30,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 00:54:30,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 353 transitions. [2023-11-29 00:54:30,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5498442367601246 [2023-11-29 00:54:30,798 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 353 transitions. [2023-11-29 00:54:30,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 353 transitions. [2023-11-29 00:54:30,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:54:30,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 353 transitions. [2023-11-29 00:54:30,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 58.833333333333336) internal successors, (353), 6 states have internal predecessors, (353), 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) [2023-11-29 00:54:30,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 107.0) internal successors, (749), 7 states have internal predecessors, (749), 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) [2023-11-29 00:54:30,800 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 107.0) internal successors, (749), 7 states have internal predecessors, (749), 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) [2023-11-29 00:54:30,800 INFO L175 Difference]: Start difference. First operand has 234 places, 198 transitions, 1640 flow. Second operand 6 states and 353 transitions. [2023-11-29 00:54:30,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 269 transitions, 2638 flow [2023-11-29 00:54:31,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 269 transitions, 2632 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:54:31,159 INFO L231 Difference]: Finished difference. Result has 241 places, 206 transitions, 1787 flow [2023-11-29 00:54:31,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=1635, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1787, PETRI_PLACES=241, PETRI_TRANSITIONS=206} [2023-11-29 00:54:31,159 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 139 predicate places. [2023-11-29 00:54:31,159 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 206 transitions, 1787 flow [2023-11-29 00:54:31,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 48.0) internal successors, (336), 7 states have internal predecessors, (336), 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) [2023-11-29 00:54:31,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:54:31,160 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:54:31,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-11-29 00:54:31,160 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-29 00:54:31,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:54:31,160 INFO L85 PathProgramCache]: Analyzing trace with hash 386705555, now seen corresponding path program 1 times [2023-11-29 00:54:31,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:54:31,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910236324] [2023-11-29 00:54:31,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:54:31,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:54:31,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:54:31,373 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 00:54:31,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:54:31,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910236324] [2023-11-29 00:54:31,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910236324] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:54:31,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:54:31,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 00:54:31,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973929432] [2023-11-29 00:54:31,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:54:31,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 00:54:31,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:54:31,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 00:54:31,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:54:31,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 107 [2023-11-29 00:54:31,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 206 transitions, 1787 flow. Second operand has 9 states, 9 states have (on average 37.333333333333336) internal successors, (336), 9 states have internal predecessors, (336), 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) [2023-11-29 00:54:31,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:54:31,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 107 [2023-11-29 00:54:31,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:54:40,044 INFO L124 PetriNetUnfolderBase]: 25803/45124 cut-off events. [2023-11-29 00:54:40,045 INFO L125 PetriNetUnfolderBase]: For 189890/193663 co-relation queries the response was YES. [2023-11-29 00:54:40,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169044 conditions, 45124 events. 25803/45124 cut-off events. For 189890/193663 co-relation queries the response was YES. Maximal size of possible extension queue 1352. Compared 393823 event pairs, 13591 based on Foata normal form. 1323/44348 useless extension candidates. Maximal degree in co-relation 168927. Up to 27360 conditions per place. [2023-11-29 00:54:40,848 INFO L140 encePairwiseOnDemand]: 89/107 looper letters, 192 selfloop transitions, 49 changer transitions 5/272 dead transitions. [2023-11-29 00:54:40,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 272 transitions, 2801 flow [2023-11-29 00:54:40,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 00:54:40,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-29 00:54:40,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 614 transitions. [2023-11-29 00:54:40,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3825545171339564 [2023-11-29 00:54:40,850 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 614 transitions. [2023-11-29 00:54:40,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 614 transitions. [2023-11-29 00:54:40,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:54:40,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 614 transitions. [2023-11-29 00:54:40,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 40.93333333333333) internal successors, (614), 15 states have internal predecessors, (614), 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) [2023-11-29 00:54:40,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 107.0) internal successors, (1712), 16 states have internal predecessors, (1712), 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) [2023-11-29 00:54:40,854 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 107.0) internal successors, (1712), 16 states have internal predecessors, (1712), 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) [2023-11-29 00:54:40,854 INFO L175 Difference]: Start difference. First operand has 241 places, 206 transitions, 1787 flow. Second operand 15 states and 614 transitions. [2023-11-29 00:54:40,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 272 transitions, 2801 flow [2023-11-29 00:54:41,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 272 transitions, 2791 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:54:41,266 INFO L231 Difference]: Finished difference. Result has 260 places, 219 transitions, 2036 flow [2023-11-29 00:54:41,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=1778, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2036, PETRI_PLACES=260, PETRI_TRANSITIONS=219} [2023-11-29 00:54:41,267 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 158 predicate places. [2023-11-29 00:54:41,267 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 219 transitions, 2036 flow [2023-11-29 00:54:41,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 37.333333333333336) internal successors, (336), 9 states have internal predecessors, (336), 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) [2023-11-29 00:54:41,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:54:41,267 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:54:41,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-11-29 00:54:41,268 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-29 00:54:41,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:54:41,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1528817836, now seen corresponding path program 1 times [2023-11-29 00:54:41,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:54:41,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040192492] [2023-11-29 00:54:41,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:54:41,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:54:41,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:54:41,388 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 00:54:41,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:54:41,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040192492] [2023-11-29 00:54:41,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040192492] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:54:41,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:54:41,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 00:54:41,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702297051] [2023-11-29 00:54:41,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:54:41,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:54:41,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:54:41,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:54:41,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:54:41,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 107 [2023-11-29 00:54:41,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 219 transitions, 2036 flow. Second operand has 6 states, 6 states have (on average 54.5) internal successors, (327), 6 states have internal predecessors, (327), 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) [2023-11-29 00:54:41,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:54:41,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 107 [2023-11-29 00:54:41,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:54:50,149 INFO L124 PetriNetUnfolderBase]: 25752/45324 cut-off events. [2023-11-29 00:54:50,149 INFO L125 PetriNetUnfolderBase]: For 193050/196481 co-relation queries the response was YES. [2023-11-29 00:54:50,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172437 conditions, 45324 events. 25752/45324 cut-off events. For 193050/196481 co-relation queries the response was YES. Maximal size of possible extension queue 1317. Compared 395817 event pairs, 19765 based on Foata normal form. 1287/44266 useless extension candidates. Maximal degree in co-relation 172311. Up to 27360 conditions per place. [2023-11-29 00:54:50,722 INFO L140 encePairwiseOnDemand]: 96/107 looper letters, 190 selfloop transitions, 27 changer transitions 0/270 dead transitions. [2023-11-29 00:54:50,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 270 transitions, 2907 flow [2023-11-29 00:54:50,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:54:50,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 00:54:50,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 334 transitions. [2023-11-29 00:54:50,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6242990654205608 [2023-11-29 00:54:50,724 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 334 transitions. [2023-11-29 00:54:50,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 334 transitions. [2023-11-29 00:54:50,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:54:50,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 334 transitions. [2023-11-29 00:54:50,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 66.8) internal successors, (334), 5 states have internal predecessors, (334), 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) [2023-11-29 00:54:50,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 107.0) internal successors, (642), 6 states have internal predecessors, (642), 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) [2023-11-29 00:54:50,726 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 107.0) internal successors, (642), 6 states have internal predecessors, (642), 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) [2023-11-29 00:54:50,726 INFO L175 Difference]: Start difference. First operand has 260 places, 219 transitions, 2036 flow. Second operand 5 states and 334 transitions. [2023-11-29 00:54:50,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 270 transitions, 2907 flow [2023-11-29 00:54:51,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 270 transitions, 2881 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-11-29 00:54:51,136 INFO L231 Difference]: Finished difference. Result has 262 places, 222 transitions, 2110 flow [2023-11-29 00:54:51,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=2004, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2110, PETRI_PLACES=262, PETRI_TRANSITIONS=222} [2023-11-29 00:54:51,137 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 160 predicate places. [2023-11-29 00:54:51,137 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 222 transitions, 2110 flow [2023-11-29 00:54:51,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 54.5) internal successors, (327), 6 states have internal predecessors, (327), 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) [2023-11-29 00:54:51,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:54:51,137 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:54:51,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-11-29 00:54:51,137 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-29 00:54:51,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:54:51,138 INFO L85 PathProgramCache]: Analyzing trace with hash -666012018, now seen corresponding path program 1 times [2023-11-29 00:54:51,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:54:51,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912804363] [2023-11-29 00:54:51,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:54:51,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:54:51,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:54:51,256 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 00:54:51,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:54:51,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912804363] [2023-11-29 00:54:51,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912804363] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:54:51,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:54:51,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 00:54:51,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727487952] [2023-11-29 00:54:51,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:54:51,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:54:51,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:54:51,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:54:51,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:54:51,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 107 [2023-11-29 00:54:51,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 222 transitions, 2110 flow. Second operand has 6 states, 6 states have (on average 50.833333333333336) internal successors, (305), 6 states have internal predecessors, (305), 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) [2023-11-29 00:54:51,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:54:51,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 107 [2023-11-29 00:54:51,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:55:00,611 INFO L124 PetriNetUnfolderBase]: 25726/45379 cut-off events. [2023-11-29 00:55:00,611 INFO L125 PetriNetUnfolderBase]: For 196822/200253 co-relation queries the response was YES. [2023-11-29 00:55:01,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173153 conditions, 45379 events. 25726/45379 cut-off events. For 196822/200253 co-relation queries the response was YES. Maximal size of possible extension queue 1318. Compared 396994 event pairs, 20039 based on Foata normal form. 1291/44331 useless extension candidates. Maximal degree in co-relation 173025. Up to 19997 conditions per place. [2023-11-29 00:55:01,229 INFO L140 encePairwiseOnDemand]: 99/107 looper letters, 210 selfloop transitions, 21 changer transitions 0/282 dead transitions. [2023-11-29 00:55:01,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 282 transitions, 3036 flow [2023-11-29 00:55:01,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:55:01,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 00:55:01,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 315 transitions. [2023-11-29 00:55:01,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5887850467289719 [2023-11-29 00:55:01,231 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 315 transitions. [2023-11-29 00:55:01,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 315 transitions. [2023-11-29 00:55:01,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:55:01,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 315 transitions. [2023-11-29 00:55:01,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 63.0) internal successors, (315), 5 states have internal predecessors, (315), 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) [2023-11-29 00:55:01,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 107.0) internal successors, (642), 6 states have internal predecessors, (642), 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) [2023-11-29 00:55:01,232 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 107.0) internal successors, (642), 6 states have internal predecessors, (642), 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) [2023-11-29 00:55:01,232 INFO L175 Difference]: Start difference. First operand has 262 places, 222 transitions, 2110 flow. Second operand 5 states and 315 transitions. [2023-11-29 00:55:01,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 282 transitions, 3036 flow [2023-11-29 00:55:01,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 282 transitions, 3024 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:55:01,803 INFO L231 Difference]: Finished difference. Result has 264 places, 221 transitions, 2148 flow [2023-11-29 00:55:01,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=2085, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2148, PETRI_PLACES=264, PETRI_TRANSITIONS=221} [2023-11-29 00:55:01,803 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 162 predicate places. [2023-11-29 00:55:01,803 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 221 transitions, 2148 flow [2023-11-29 00:55:01,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 50.833333333333336) internal successors, (305), 6 states have internal predecessors, (305), 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) [2023-11-29 00:55:01,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:55:01,803 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:55:01,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-11-29 00:55:01,803 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-29 00:55:01,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:55:01,804 INFO L85 PathProgramCache]: Analyzing trace with hash -897028595, now seen corresponding path program 1 times [2023-11-29 00:55:01,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:55:01,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438245942] [2023-11-29 00:55:01,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:55:01,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:55:01,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:55:01,936 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 00:55:01,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:55:01,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438245942] [2023-11-29 00:55:01,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438245942] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:55:01,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:55:01,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:55:01,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985903979] [2023-11-29 00:55:01,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:55:01,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 00:55:01,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:55:01,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 00:55:01,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:55:02,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 107 [2023-11-29 00:55:02,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 221 transitions, 2148 flow. Second operand has 8 states, 8 states have (on average 39.75) internal successors, (318), 8 states have internal predecessors, (318), 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) [2023-11-29 00:55:02,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:55:02,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 107 [2023-11-29 00:55:02,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:55:12,842 INFO L124 PetriNetUnfolderBase]: 33958/59145 cut-off events. [2023-11-29 00:55:12,842 INFO L125 PetriNetUnfolderBase]: For 249869/254587 co-relation queries the response was YES. [2023-11-29 00:55:13,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 224544 conditions, 59145 events. 33958/59145 cut-off events. For 249869/254587 co-relation queries the response was YES. Maximal size of possible extension queue 1748. Compared 532454 event pairs, 26487 based on Foata normal form. 1804/57815 useless extension candidates. Maximal degree in co-relation 224415. Up to 31266 conditions per place. [2023-11-29 00:55:13,555 INFO L140 encePairwiseOnDemand]: 90/107 looper letters, 215 selfloop transitions, 37 changer transitions 15/300 dead transitions. [2023-11-29 00:55:13,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 300 transitions, 3316 flow [2023-11-29 00:55:13,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 00:55:13,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-29 00:55:13,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 607 transitions. [2023-11-29 00:55:13,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40520694259012013 [2023-11-29 00:55:13,557 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 607 transitions. [2023-11-29 00:55:13,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 607 transitions. [2023-11-29 00:55:13,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:55:13,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 607 transitions. [2023-11-29 00:55:13,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 43.357142857142854) internal successors, (607), 14 states have internal predecessors, (607), 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) [2023-11-29 00:55:13,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 107.0) internal successors, (1605), 15 states have internal predecessors, (1605), 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) [2023-11-29 00:55:13,560 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 107.0) internal successors, (1605), 15 states have internal predecessors, (1605), 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) [2023-11-29 00:55:13,560 INFO L175 Difference]: Start difference. First operand has 264 places, 221 transitions, 2148 flow. Second operand 14 states and 607 transitions. [2023-11-29 00:55:13,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 300 transitions, 3316 flow [2023-11-29 00:55:14,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 300 transitions, 3309 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:55:14,066 INFO L231 Difference]: Finished difference. Result has 284 places, 223 transitions, 2285 flow [2023-11-29 00:55:14,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=2142, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2285, PETRI_PLACES=284, PETRI_TRANSITIONS=223} [2023-11-29 00:55:14,067 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 182 predicate places. [2023-11-29 00:55:14,067 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 223 transitions, 2285 flow [2023-11-29 00:55:14,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 39.75) internal successors, (318), 8 states have internal predecessors, (318), 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) [2023-11-29 00:55:14,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:55:14,067 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:55:14,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-11-29 00:55:14,067 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-29 00:55:14,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:55:14,068 INFO L85 PathProgramCache]: Analyzing trace with hash 828462886, now seen corresponding path program 1 times [2023-11-29 00:55:14,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:55:14,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872195628] [2023-11-29 00:55:14,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:55:14,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:55:14,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:55:14,340 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 00:55:14,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:55:14,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872195628] [2023-11-29 00:55:14,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872195628] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:55:14,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:55:14,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 00:55:14,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255528114] [2023-11-29 00:55:14,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:55:14,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 00:55:14,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:55:14,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 00:55:14,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:55:14,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 107 [2023-11-29 00:55:14,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 223 transitions, 2285 flow. Second operand has 8 states, 8 states have (on average 47.5) internal successors, (380), 8 states have internal predecessors, (380), 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) [2023-11-29 00:55:14,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:55:14,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 107 [2023-11-29 00:55:14,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:55:25,317 INFO L124 PetriNetUnfolderBase]: 33954/58923 cut-off events. [2023-11-29 00:55:25,317 INFO L125 PetriNetUnfolderBase]: For 250226/254932 co-relation queries the response was YES. [2023-11-29 00:55:25,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223797 conditions, 58923 events. 33954/58923 cut-off events. For 250226/254932 co-relation queries the response was YES. Maximal size of possible extension queue 1735. Compared 528679 event pairs, 26213 based on Foata normal form. 1763/57534 useless extension candidates. Maximal degree in co-relation 223681. Up to 42749 conditions per place. [2023-11-29 00:55:26,240 INFO L140 encePairwiseOnDemand]: 94/107 looper letters, 187 selfloop transitions, 38 changer transitions 0/270 dead transitions. [2023-11-29 00:55:26,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 270 transitions, 3155 flow [2023-11-29 00:55:26,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:55:26,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 00:55:26,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 390 transitions. [2023-11-29 00:55:26,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.520694259012016 [2023-11-29 00:55:26,241 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 390 transitions. [2023-11-29 00:55:26,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 390 transitions. [2023-11-29 00:55:26,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:55:26,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 390 transitions. [2023-11-29 00:55:26,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 55.714285714285715) internal successors, (390), 7 states have internal predecessors, (390), 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) [2023-11-29 00:55:26,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 107.0) internal successors, (856), 8 states have internal predecessors, (856), 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) [2023-11-29 00:55:26,243 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 107.0) internal successors, (856), 8 states have internal predecessors, (856), 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) [2023-11-29 00:55:26,243 INFO L175 Difference]: Start difference. First operand has 284 places, 223 transitions, 2285 flow. Second operand 7 states and 390 transitions. [2023-11-29 00:55:26,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 270 transitions, 3155 flow [2023-11-29 00:55:26,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 270 transitions, 3126 flow, removed 11 selfloop flow, removed 4 redundant places. [2023-11-29 00:55:26,859 INFO L231 Difference]: Finished difference. Result has 285 places, 225 transitions, 2384 flow [2023-11-29 00:55:26,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=2256, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2384, PETRI_PLACES=285, PETRI_TRANSITIONS=225} [2023-11-29 00:55:26,860 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 183 predicate places. [2023-11-29 00:55:26,860 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 225 transitions, 2384 flow [2023-11-29 00:55:26,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 47.5) internal successors, (380), 8 states have internal predecessors, (380), 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) [2023-11-29 00:55:26,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:55:26,860 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:55:26,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-11-29 00:55:26,861 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-29 00:55:26,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:55:26,861 INFO L85 PathProgramCache]: Analyzing trace with hash 813238738, now seen corresponding path program 2 times [2023-11-29 00:55:26,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:55:26,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706995928] [2023-11-29 00:55:26,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:55:26,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:55:26,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:55:27,004 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-29 00:55:27,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:55:27,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706995928] [2023-11-29 00:55:27,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706995928] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:55:27,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064788631] [2023-11-29 00:55:27,005 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:55:27,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:55:27,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:55:27,006 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:55:27,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 00:55:27,152 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 00:55:27,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:55:27,153 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 00:55:27,154 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:55:27,326 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-11-29 00:55:27,326 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:55:27,372 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-11-29 00:55:27,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064788631] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:55:27,372 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:55:27,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 2, 2] total 9 [2023-11-29 00:55:27,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929554700] [2023-11-29 00:55:27,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:55:27,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 00:55:27,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:55:27,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 00:55:27,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:55:27,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 107 [2023-11-29 00:55:27,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 225 transitions, 2384 flow. Second operand has 11 states, 11 states have (on average 50.63636363636363) internal successors, (557), 11 states have internal predecessors, (557), 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) [2023-11-29 00:55:27,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:55:27,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 107 [2023-11-29 00:55:27,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:55:38,998 INFO L124 PetriNetUnfolderBase]: 34686/61205 cut-off events. [2023-11-29 00:55:38,998 INFO L125 PetriNetUnfolderBase]: For 273050/277113 co-relation queries the response was YES. [2023-11-29 00:55:39,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219209 conditions, 61205 events. 34686/61205 cut-off events. For 273050/277113 co-relation queries the response was YES. Maximal size of possible extension queue 1723. Compared 562696 event pairs, 17472 based on Foata normal form. 1980/59395 useless extension candidates. Maximal degree in co-relation 219069. Up to 21443 conditions per place. [2023-11-29 00:55:39,959 INFO L140 encePairwiseOnDemand]: 94/107 looper letters, 196 selfloop transitions, 73 changer transitions 0/328 dead transitions. [2023-11-29 00:55:39,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 328 transitions, 3809 flow [2023-11-29 00:55:39,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 00:55:39,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-29 00:55:39,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 904 transitions. [2023-11-29 00:55:39,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5280373831775701 [2023-11-29 00:55:39,961 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 904 transitions. [2023-11-29 00:55:39,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 904 transitions. [2023-11-29 00:55:39,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:55:39,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 904 transitions. [2023-11-29 00:55:39,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 56.5) internal successors, (904), 16 states have internal predecessors, (904), 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) [2023-11-29 00:55:39,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 107.0) internal successors, (1819), 17 states have internal predecessors, (1819), 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) [2023-11-29 00:55:39,965 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 107.0) internal successors, (1819), 17 states have internal predecessors, (1819), 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) [2023-11-29 00:55:39,965 INFO L175 Difference]: Start difference. First operand has 285 places, 225 transitions, 2384 flow. Second operand 16 states and 904 transitions. [2023-11-29 00:55:39,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 328 transitions, 3809 flow [2023-11-29 00:55:40,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 328 transitions, 3723 flow, removed 5 selfloop flow, removed 7 redundant places. [2023-11-29 00:55:40,510 INFO L231 Difference]: Finished difference. Result has 292 places, 236 transitions, 2536 flow [2023-11-29 00:55:40,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=2319, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2536, PETRI_PLACES=292, PETRI_TRANSITIONS=236} [2023-11-29 00:55:40,511 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 190 predicate places. [2023-11-29 00:55:40,511 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 236 transitions, 2536 flow [2023-11-29 00:55:40,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 50.63636363636363) internal successors, (557), 11 states have internal predecessors, (557), 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) [2023-11-29 00:55:40,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:55:40,512 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:55:40,516 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-29 00:55:40,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-11-29 00:55:40,712 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-29 00:55:40,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:55:40,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1201893487, now seen corresponding path program 1 times [2023-11-29 00:55:40,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:55:40,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988269732] [2023-11-29 00:55:40,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:55:40,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:55:40,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:55:40,824 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 00:55:40,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:55:40,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988269732] [2023-11-29 00:55:40,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988269732] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:55:40,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:55:40,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 00:55:40,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326311138] [2023-11-29 00:55:40,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:55:40,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:55:40,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:55:40,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:55:40,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:55:40,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 107 [2023-11-29 00:55:40,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 236 transitions, 2536 flow. Second operand has 6 states, 6 states have (on average 49.0) internal successors, (294), 6 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:55:40,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:55:40,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 107 [2023-11-29 00:55:40,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:55:51,113 INFO L124 PetriNetUnfolderBase]: 33922/56799 cut-off events. [2023-11-29 00:55:51,113 INFO L125 PetriNetUnfolderBase]: For 256927/262516 co-relation queries the response was YES. [2023-11-29 00:55:51,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217850 conditions, 56799 events. 33922/56799 cut-off events. For 256927/262516 co-relation queries the response was YES. Maximal size of possible extension queue 1785. Compared 493272 event pairs, 26487 based on Foata normal form. 1820/56543 useless extension candidates. Maximal degree in co-relation 217715. Up to 31336 conditions per place. [2023-11-29 00:55:51,843 INFO L140 encePairwiseOnDemand]: 97/107 looper letters, 227 selfloop transitions, 24 changer transitions 1/294 dead transitions. [2023-11-29 00:55:51,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 294 transitions, 3462 flow [2023-11-29 00:55:51,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:55:51,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 00:55:51,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 349 transitions. [2023-11-29 00:55:51,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.543613707165109 [2023-11-29 00:55:51,844 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 349 transitions. [2023-11-29 00:55:51,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 349 transitions. [2023-11-29 00:55:51,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:55:51,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 349 transitions. [2023-11-29 00:55:51,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 58.166666666666664) internal successors, (349), 6 states have internal predecessors, (349), 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) [2023-11-29 00:55:51,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 107.0) internal successors, (749), 7 states have internal predecessors, (749), 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) [2023-11-29 00:55:51,846 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 107.0) internal successors, (749), 7 states have internal predecessors, (749), 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) [2023-11-29 00:55:51,846 INFO L175 Difference]: Start difference. First operand has 292 places, 236 transitions, 2536 flow. Second operand 6 states and 349 transitions. [2023-11-29 00:55:51,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 294 transitions, 3462 flow [2023-11-29 00:55:52,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 294 transitions, 3278 flow, removed 4 selfloop flow, removed 20 redundant places. [2023-11-29 00:55:52,137 INFO L231 Difference]: Finished difference. Result has 277 places, 226 transitions, 2316 flow [2023-11-29 00:55:52,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=2248, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2316, PETRI_PLACES=277, PETRI_TRANSITIONS=226} [2023-11-29 00:55:52,137 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 175 predicate places. [2023-11-29 00:55:52,137 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 226 transitions, 2316 flow [2023-11-29 00:55:52,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.0) internal successors, (294), 6 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:55:52,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:55:52,138 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:55:52,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-11-29 00:55:52,138 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-29 00:55:52,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:55:52,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1585917800, now seen corresponding path program 1 times [2023-11-29 00:55:52,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:55:52,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88715439] [2023-11-29 00:55:52,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:55:52,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:55:52,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:55:52,298 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 00:55:52,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:55:52,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88715439] [2023-11-29 00:55:52,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88715439] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:55:52,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:55:52,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 00:55:52,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451767509] [2023-11-29 00:55:52,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:55:52,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:55:52,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:55:52,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:55:52,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:55:52,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 107 [2023-11-29 00:55:52,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 226 transitions, 2316 flow. Second operand has 6 states, 6 states have (on average 55.166666666666664) internal successors, (331), 6 states have internal predecessors, (331), 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) [2023-11-29 00:55:52,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:55:52,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 107 [2023-11-29 00:55:52,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:56:02,328 INFO L124 PetriNetUnfolderBase]: 33798/55414 cut-off events. [2023-11-29 00:56:02,328 INFO L125 PetriNetUnfolderBase]: For 258584/264793 co-relation queries the response was YES. [2023-11-29 00:56:02,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214572 conditions, 55414 events. 33798/55414 cut-off events. For 258584/264793 co-relation queries the response was YES. Maximal size of possible extension queue 1749. Compared 470258 event pairs, 7143 based on Foata normal form. 1951/55926 useless extension candidates. Maximal degree in co-relation 214444. Up to 34447 conditions per place. [2023-11-29 00:56:02,989 INFO L140 encePairwiseOnDemand]: 99/107 looper letters, 185 selfloop transitions, 27 changer transitions 6/261 dead transitions. [2023-11-29 00:56:02,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 261 transitions, 3002 flow [2023-11-29 00:56:02,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:56:02,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 00:56:02,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 331 transitions. [2023-11-29 00:56:02,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6186915887850467 [2023-11-29 00:56:02,990 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 331 transitions. [2023-11-29 00:56:02,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 331 transitions. [2023-11-29 00:56:02,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:56:02,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 331 transitions. [2023-11-29 00:56:02,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 66.2) internal successors, (331), 5 states have internal predecessors, (331), 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) [2023-11-29 00:56:02,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 107.0) internal successors, (642), 6 states have internal predecessors, (642), 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) [2023-11-29 00:56:02,992 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 107.0) internal successors, (642), 6 states have internal predecessors, (642), 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) [2023-11-29 00:56:02,992 INFO L175 Difference]: Start difference. First operand has 277 places, 226 transitions, 2316 flow. Second operand 5 states and 331 transitions. [2023-11-29 00:56:02,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 261 transitions, 3002 flow [2023-11-29 00:56:03,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 261 transitions, 2946 flow, removed 1 selfloop flow, removed 7 redundant places. [2023-11-29 00:56:03,232 INFO L231 Difference]: Finished difference. Result has 276 places, 222 transitions, 2285 flow [2023-11-29 00:56:03,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=2261, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2285, PETRI_PLACES=276, PETRI_TRANSITIONS=222} [2023-11-29 00:56:03,232 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 174 predicate places. [2023-11-29 00:56:03,232 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 222 transitions, 2285 flow [2023-11-29 00:56:03,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 55.166666666666664) internal successors, (331), 6 states have internal predecessors, (331), 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) [2023-11-29 00:56:03,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:56:03,233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:56:03,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-11-29 00:56:03,233 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-29 00:56:03,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:56:03,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1912002908, now seen corresponding path program 1 times [2023-11-29 00:56:03,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:56:03,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059477178] [2023-11-29 00:56:03,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:56:03,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:56:03,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:56:03,345 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 00:56:03,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:56:03,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059477178] [2023-11-29 00:56:03,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059477178] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:56:03,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:56:03,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:56:03,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733020170] [2023-11-29 00:56:03,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:56:03,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:56:03,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:56:03,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:56:03,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:56:03,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 107 [2023-11-29 00:56:03,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 222 transitions, 2285 flow. Second operand has 5 states, 5 states have (on average 58.2) internal successors, (291), 5 states have internal predecessors, (291), 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) [2023-11-29 00:56:03,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:56:03,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 107 [2023-11-29 00:56:03,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:56:13,800 INFO L124 PetriNetUnfolderBase]: 33918/56402 cut-off events. [2023-11-29 00:56:13,800 INFO L125 PetriNetUnfolderBase]: For 263088/268816 co-relation queries the response was YES. [2023-11-29 00:56:14,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217157 conditions, 56402 events. 33918/56402 cut-off events. For 263088/268816 co-relation queries the response was YES. Maximal size of possible extension queue 1772. Compared 486687 event pairs, 26487 based on Foata normal form. 1823/56148 useless extension candidates. Maximal degree in co-relation 217028. Up to 46867 conditions per place. [2023-11-29 00:56:14,545 INFO L140 encePairwiseOnDemand]: 102/107 looper letters, 131 selfloop transitions, 12 changer transitions 35/221 dead transitions. [2023-11-29 00:56:14,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 221 transitions, 2629 flow [2023-11-29 00:56:14,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:56:14,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 00:56:14,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 306 transitions. [2023-11-29 00:56:14,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5719626168224299 [2023-11-29 00:56:14,546 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 306 transitions. [2023-11-29 00:56:14,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 306 transitions. [2023-11-29 00:56:14,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:56:14,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 306 transitions. [2023-11-29 00:56:14,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 61.2) internal successors, (306), 5 states have internal predecessors, (306), 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) [2023-11-29 00:56:14,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 107.0) internal successors, (642), 6 states have internal predecessors, (642), 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) [2023-11-29 00:56:14,548 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 107.0) internal successors, (642), 6 states have internal predecessors, (642), 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) [2023-11-29 00:56:14,548 INFO L175 Difference]: Start difference. First operand has 276 places, 222 transitions, 2285 flow. Second operand 5 states and 306 transitions. [2023-11-29 00:56:14,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 221 transitions, 2629 flow [2023-11-29 00:56:14,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 221 transitions, 2465 flow, removed 4 selfloop flow, removed 13 redundant places. [2023-11-29 00:56:14,835 INFO L231 Difference]: Finished difference. Result has 266 places, 186 transitions, 1645 flow [2023-11-29 00:56:14,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=2119, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1645, PETRI_PLACES=266, PETRI_TRANSITIONS=186} [2023-11-29 00:56:14,835 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, 164 predicate places. [2023-11-29 00:56:14,835 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 186 transitions, 1645 flow [2023-11-29 00:56:14,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 58.2) internal successors, (291), 5 states have internal predecessors, (291), 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) [2023-11-29 00:56:14,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:56:14,836 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:56:14,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-11-29 00:56:14,836 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-11-29 00:56:14,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:56:14,836 INFO L85 PathProgramCache]: Analyzing trace with hash 826488292, now seen corresponding path program 2 times [2023-11-29 00:56:14,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:56:14,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384386444] [2023-11-29 00:56:14,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:56:14,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:56:14,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:56:16,091 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-29 00:56:16,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:56:16,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384386444] [2023-11-29 00:56:16,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384386444] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:56:16,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518069037] [2023-11-29 00:56:16,092 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:56:16,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:56:16,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:56:16,093 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:56:16,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914556d2-df17-4a7c-b883-59f2b198382a/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 00:56:16,274 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:56:16,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:56:16,277 INFO L262 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 51 conjunts are in the unsatisfiable core [2023-11-29 00:56:16,280 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:56:16,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 00:56:16,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:56:16,293 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:56:16,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:56:16,298 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:56:16,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:56:16,301 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 00:56:16,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:56:16,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:56:16,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:56:16,415 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 00:56:16,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:56:16,421 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:56:16,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:56:16,424 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 00:56:16,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:56:16,431 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:56:16,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:56:16,438 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 00:56:16,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:56:16,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:56:16,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:56:16,448 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 00:56:16,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:56:16,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 00:56:16,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:56:16,463 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:56:16,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:56:16,475 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-29 00:56:16,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:56:16,483 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 00:56:16,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:56:16,489 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:56:16,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:56:16,496 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 00:56:16,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:56:16,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 00:56:16,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:56:16,510 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:56:16,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:56:16,517 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:56:16,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:56:16,520 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 00:56:16,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:56:16,524 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 00:56:16,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:56:16,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:56:16,675 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 00:56:16,733 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-29 00:56:16,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-11-29 00:56:16,776 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 00:56:16,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 00:56:16,826 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 00:56:16,880 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 00:56:16,880 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-29 00:56:16,918 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 00:56:16,935 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 00:56:16,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 00:56:17,106 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 00:56:17,243 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-29 00:56:17,243 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:56:17,368 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1444 (Array Int Int))) (< (select (select (store |c_#memory_int#4| c_~C~0.base v_ArrVal_1444) c_~A~0.base) (+ c_~A~0.offset 4 (* |c_thread2Thread1of1ForFork1_~i~1#1| 4))) 2147483648)) is different from false [2023-11-29 00:56:17,376 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1444 (Array Int Int))) (< (select (select (store |c_#memory_int#4| c_~C~0.base v_ArrVal_1444) c_~A~0.base) (+ c_~A~0.offset 8)) 2147483648)) is different from false [2023-11-29 00:56:17,402 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1444 (Array Int Int))) (< (select (select (store |c_#memory_int#4| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_1444) c_~A~0.base) (+ c_~A~0.offset 8)) 2147483648)) is different from false [2023-11-29 00:56:17,728 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:56:17,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2023-11-29 00:56:17,738 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:56:17,738 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 141 treesize of output 129 [2023-11-29 00:56:17,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2023-11-29 00:56:17,750 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2023-11-29 00:56:18,379 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 17 trivial. 2 not checked. [2023-11-29 00:56:18,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518069037] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:56:18,380 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:56:18,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 14] total 44 [2023-11-29 00:56:18,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415701824] [2023-11-29 00:56:18,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:56:18,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-11-29 00:56:18,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:56:18,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-11-29 00:56:18,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=1690, Unknown=4, NotChecked=252, Total=2070 [2023-11-29 00:56:18,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 107 [2023-11-29 00:56:18,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 186 transitions, 1645 flow. Second operand has 46 states, 46 states have (on average 42.34782608695652) internal successors, (1948), 46 states have internal predecessors, (1948), 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) [2023-11-29 00:56:18,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:56:18,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 107 [2023-11-29 00:56:18,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand