./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/fib_safe-5.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765017f8-0a98-49f9-899f-33fe5f101148/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765017f8-0a98-49f9-899f-33fe5f101148/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765017f8-0a98-49f9-899f-33fe5f101148/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765017f8-0a98-49f9-899f-33fe5f101148/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/fib_safe-5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765017f8-0a98-49f9-899f-33fe5f101148/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765017f8-0a98-49f9-899f-33fe5f101148/bin/uautomizer-verify-jihMAELWvX --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 74a086edb560572752b8cbc391425d974c2cbbd7d3553767e0707a5dc02a4897 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 18:50:26,772 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 18:50:26,870 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765017f8-0a98-49f9-899f-33fe5f101148/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-08 18:50:26,878 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 18:50:26,878 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 18:50:26,908 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 18:50:26,909 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 18:50:26,909 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 18:50:26,910 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 18:50:26,910 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 18:50:26,911 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 18:50:26,911 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 18:50:26,912 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 18:50:26,912 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 18:50:26,913 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 18:50:26,913 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 18:50:26,914 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 18:50:26,914 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 18:50:26,914 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 18:50:26,915 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 18:50:26,915 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 18:50:26,920 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 18:50:26,920 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 18:50:26,920 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 18:50:26,921 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 18:50:26,921 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-08 18:50:26,921 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 18:50:26,922 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 18:50:26,922 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 18:50:26,922 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 18:50:26,922 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 18:50:26,923 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 18:50:26,923 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 18:50:26,928 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 18:50:26,928 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:50:26,929 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 18:50:26,930 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 18:50:26,931 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 18:50:26,931 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 18:50:26,931 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 18:50:26,932 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 18:50:26,932 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 18:50:26,933 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 18:50:26,933 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 18:50:26,934 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_765017f8-0a98-49f9-899f-33fe5f101148/bin/uautomizer-verify-jihMAELWvX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765017f8-0a98-49f9-899f-33fe5f101148/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 74a086edb560572752b8cbc391425d974c2cbbd7d3553767e0707a5dc02a4897 [2024-11-08 18:50:27,250 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 18:50:27,282 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 18:50:27,285 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 18:50:27,287 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 18:50:27,287 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 18:50:27,289 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765017f8-0a98-49f9-899f-33fe5f101148/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/pthread/fib_safe-5.i Unable to find full path for "g++" [2024-11-08 18:50:29,421 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 18:50:29,762 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 18:50:29,765 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765017f8-0a98-49f9-899f-33fe5f101148/sv-benchmarks/c/pthread/fib_safe-5.i [2024-11-08 18:50:29,789 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765017f8-0a98-49f9-899f-33fe5f101148/bin/uautomizer-verify-jihMAELWvX/data/c9d789e4e/f2a3d3850d4b450c89981daa699bd21d/FLAGfd8d3c8b1 [2024-11-08 18:50:29,993 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765017f8-0a98-49f9-899f-33fe5f101148/bin/uautomizer-verify-jihMAELWvX/data/c9d789e4e/f2a3d3850d4b450c89981daa699bd21d [2024-11-08 18:50:29,997 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 18:50:29,999 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 18:50:30,001 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 18:50:30,001 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 18:50:30,010 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 18:50:30,010 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:50:29" (1/1) ... [2024-11-08 18:50:30,012 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37b2f4dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:50:30, skipping insertion in model container [2024-11-08 18:50:30,012 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:50:29" (1/1) ... [2024-11-08 18:50:30,089 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 18:50:30,565 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:50:30,576 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 18:50:30,660 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:50:30,704 INFO L204 MainTranslator]: Completed translation [2024-11-08 18:50:30,705 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:50:30 WrapperNode [2024-11-08 18:50:30,705 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 18:50:30,707 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 18:50:30,707 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 18:50:30,707 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 18:50:30,715 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:50:30" (1/1) ... [2024-11-08 18:50:30,728 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:50:30" (1/1) ... [2024-11-08 18:50:30,748 INFO L138 Inliner]: procedures = 164, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 71 [2024-11-08 18:50:30,749 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 18:50:30,750 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 18:50:30,750 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 18:50:30,750 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 18:50:30,763 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:50:30" (1/1) ... [2024-11-08 18:50:30,764 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:50:30" (1/1) ... [2024-11-08 18:50:30,767 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:50:30" (1/1) ... [2024-11-08 18:50:30,802 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-08 18:50:30,802 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:50:30" (1/1) ... [2024-11-08 18:50:30,803 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:50:30" (1/1) ... [2024-11-08 18:50:30,809 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:50:30" (1/1) ... [2024-11-08 18:50:30,813 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:50:30" (1/1) ... [2024-11-08 18:50:30,815 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:50:30" (1/1) ... [2024-11-08 18:50:30,816 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:50:30" (1/1) ... [2024-11-08 18:50:30,819 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 18:50:30,824 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 18:50:30,825 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 18:50:30,825 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 18:50:30,826 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:50:30" (1/1) ... [2024-11-08 18:50:30,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:50:30,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765017f8-0a98-49f9-899f-33fe5f101148/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:50:30,907 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765017f8-0a98-49f9-899f-33fe5f101148/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 18:50:30,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765017f8-0a98-49f9-899f-33fe5f101148/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 18:50:30,951 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-08 18:50:30,951 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-08 18:50:30,952 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-08 18:50:30,952 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-08 18:50:30,952 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-08 18:50:30,952 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 18:50:30,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 18:50:30,953 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-08 18:50:30,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 18:50:30,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 18:50:30,957 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-08 18:50:31,141 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 18:50:31,144 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 18:50:31,381 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 18:50:31,381 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 18:50:31,561 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 18:50:31,562 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 18:50:31,562 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:50:31 BoogieIcfgContainer [2024-11-08 18:50:31,562 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 18:50:31,565 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 18:50:31,565 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 18:50:31,568 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 18:50:31,569 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 06:50:29" (1/3) ... [2024-11-08 18:50:31,569 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@744fcb9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:50:31, skipping insertion in model container [2024-11-08 18:50:31,570 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:50:30" (2/3) ... [2024-11-08 18:50:31,570 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@744fcb9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:50:31, skipping insertion in model container [2024-11-08 18:50:31,570 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:50:31" (3/3) ... [2024-11-08 18:50:31,573 INFO L112 eAbstractionObserver]: Analyzing ICFG fib_safe-5.i [2024-11-08 18:50:31,589 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 18:50:31,589 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-11-08 18:50:31,590 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 18:50:31,643 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-08 18:50:31,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 53 transitions, 114 flow [2024-11-08 18:50:31,716 INFO L124 PetriNetUnfolderBase]: 6/51 cut-off events. [2024-11-08 18:50:31,716 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 18:50:31,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 51 events. 6/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 145 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 48. Up to 2 conditions per place. [2024-11-08 18:50:31,720 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 53 transitions, 114 flow [2024-11-08 18:50:31,724 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 51 transitions, 108 flow [2024-11-08 18:50:31,734 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 18:50:31,741 INFO L333 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, 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;@665e7604, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 18:50:31,741 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2024-11-08 18:50:31,749 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 18:50:31,749 INFO L124 PetriNetUnfolderBase]: 3/21 cut-off events. [2024-11-08 18:50:31,749 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 18:50:31,749 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:50:31,750 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:50:31,751 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 18:50:31,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:50:31,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1278590766, now seen corresponding path program 1 times [2024-11-08 18:50:31,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:50:31,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059764129] [2024-11-08 18:50:31,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:50:31,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:50:31,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:50:32,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:50:32,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:50:32,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059764129] [2024-11-08 18:50:32,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059764129] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:50:32,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:50:32,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:50:32,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040050180] [2024-11-08 18:50:32,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:50:32,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:50:32,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:50:32,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:50:32,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:50:32,233 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 53 [2024-11-08 18:50:32,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 51 transitions, 108 flow. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:50:32,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:50:32,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 53 [2024-11-08 18:50:32,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:50:32,585 INFO L124 PetriNetUnfolderBase]: 702/1468 cut-off events. [2024-11-08 18:50:32,586 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-11-08 18:50:32,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2487 conditions, 1468 events. 702/1468 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 9704 event pairs, 156 based on Foata normal form. 0/1080 useless extension candidates. Maximal degree in co-relation 2471. Up to 514 conditions per place. [2024-11-08 18:50:32,631 INFO L140 encePairwiseOnDemand]: 45/53 looper letters, 46 selfloop transitions, 5 changer transitions 0/78 dead transitions. [2024-11-08 18:50:32,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 78 transitions, 267 flow [2024-11-08 18:50:32,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:50:32,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 18:50:32,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 171 transitions. [2024-11-08 18:50:32,649 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8066037735849056 [2024-11-08 18:50:32,651 INFO L175 Difference]: Start difference. First operand has 52 places, 51 transitions, 108 flow. Second operand 4 states and 171 transitions. [2024-11-08 18:50:32,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 78 transitions, 267 flow [2024-11-08 18:50:32,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 78 transitions, 264 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 18:50:32,660 INFO L231 Difference]: Finished difference. Result has 54 places, 54 transitions, 137 flow [2024-11-08 18:50:32,663 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=137, PETRI_PLACES=54, PETRI_TRANSITIONS=54} [2024-11-08 18:50:32,669 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 2 predicate places. [2024-11-08 18:50:32,670 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 54 transitions, 137 flow [2024-11-08 18:50:32,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:50:32,671 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:50:32,672 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:50:32,672 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 18:50:32,673 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 18:50:32,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:50:32,675 INFO L85 PathProgramCache]: Analyzing trace with hash -365068075, now seen corresponding path program 1 times [2024-11-08 18:50:32,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:50:32,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933208277] [2024-11-08 18:50:32,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:50:32,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:50:32,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:50:32,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:50:32,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:50:32,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933208277] [2024-11-08 18:50:32,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933208277] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:50:32,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:50:32,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:50:32,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952746819] [2024-11-08 18:50:32,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:50:32,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:50:32,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:50:32,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:50:32,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:50:32,866 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 53 [2024-11-08 18:50:32,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 54 transitions, 137 flow. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:50:32,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:50:32,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 53 [2024-11-08 18:50:32,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:50:33,351 INFO L124 PetriNetUnfolderBase]: 1006/1878 cut-off events. [2024-11-08 18:50:33,351 INFO L125 PetriNetUnfolderBase]: For 192/192 co-relation queries the response was YES. [2024-11-08 18:50:33,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3829 conditions, 1878 events. 1006/1878 cut-off events. For 192/192 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 12595 event pairs, 213 based on Foata normal form. 115/1622 useless extension candidates. Maximal degree in co-relation 3813. Up to 911 conditions per place. [2024-11-08 18:50:33,372 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 57 selfloop transitions, 3 changer transitions 0/84 dead transitions. [2024-11-08 18:50:33,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 84 transitions, 337 flow [2024-11-08 18:50:33,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:50:33,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 18:50:33,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 166 transitions. [2024-11-08 18:50:33,377 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7830188679245284 [2024-11-08 18:50:33,377 INFO L175 Difference]: Start difference. First operand has 54 places, 54 transitions, 137 flow. Second operand 4 states and 166 transitions. [2024-11-08 18:50:33,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 84 transitions, 337 flow [2024-11-08 18:50:33,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 84 transitions, 337 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 18:50:33,386 INFO L231 Difference]: Finished difference. Result has 59 places, 56 transitions, 163 flow [2024-11-08 18:50:33,387 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=163, PETRI_PLACES=59, PETRI_TRANSITIONS=56} [2024-11-08 18:50:33,387 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 7 predicate places. [2024-11-08 18:50:33,388 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 56 transitions, 163 flow [2024-11-08 18:50:33,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:50:33,389 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:50:33,389 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:50:33,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 18:50:33,390 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 18:50:33,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:50:33,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1313995110, now seen corresponding path program 1 times [2024-11-08 18:50:33,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:50:33,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640309716] [2024-11-08 18:50:33,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:50:33,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:50:33,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:50:33,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:50:33,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:50:33,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640309716] [2024-11-08 18:50:33,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640309716] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:50:33,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:50:33,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-08 18:50:33,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335493048] [2024-11-08 18:50:33,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:50:33,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:50:33,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:50:33,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:50:33,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:50:33,558 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 53 [2024-11-08 18:50:33,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 56 transitions, 163 flow. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:50:33,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:50:33,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 53 [2024-11-08 18:50:33,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:50:34,017 INFO L124 PetriNetUnfolderBase]: 1258/2779 cut-off events. [2024-11-08 18:50:34,018 INFO L125 PetriNetUnfolderBase]: For 437/594 co-relation queries the response was YES. [2024-11-08 18:50:34,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5358 conditions, 2779 events. 1258/2779 cut-off events. For 437/594 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 22184 event pairs, 365 based on Foata normal form. 115/2246 useless extension candidates. Maximal degree in co-relation 5338. Up to 993 conditions per place. [2024-11-08 18:50:34,045 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 44 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2024-11-08 18:50:34,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 75 transitions, 318 flow [2024-11-08 18:50:34,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:50:34,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 18:50:34,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 129 transitions. [2024-11-08 18:50:34,048 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8113207547169812 [2024-11-08 18:50:34,049 INFO L175 Difference]: Start difference. First operand has 59 places, 56 transitions, 163 flow. Second operand 3 states and 129 transitions. [2024-11-08 18:50:34,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 75 transitions, 318 flow [2024-11-08 18:50:34,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 75 transitions, 315 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 18:50:34,054 INFO L231 Difference]: Finished difference. Result has 61 places, 57 transitions, 173 flow [2024-11-08 18:50:34,054 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=173, PETRI_PLACES=61, PETRI_TRANSITIONS=57} [2024-11-08 18:50:34,055 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 9 predicate places. [2024-11-08 18:50:34,057 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 57 transitions, 173 flow [2024-11-08 18:50:34,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:50:34,057 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:50:34,058 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:50:34,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 18:50:34,058 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 18:50:34,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:50:34,059 INFO L85 PathProgramCache]: Analyzing trace with hash -2079142475, now seen corresponding path program 1 times [2024-11-08 18:50:34,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:50:34,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613135063] [2024-11-08 18:50:34,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:50:34,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:50:34,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:50:34,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:50:34,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:50:34,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613135063] [2024-11-08 18:50:34,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613135063] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:50:34,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:50:34,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-08 18:50:34,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699304332] [2024-11-08 18:50:34,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:50:34,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:50:34,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:50:34,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:50:34,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:50:34,165 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 53 [2024-11-08 18:50:34,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 57 transitions, 173 flow. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:50:34,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:50:34,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 53 [2024-11-08 18:50:34,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:50:34,521 INFO L124 PetriNetUnfolderBase]: 1258/2727 cut-off events. [2024-11-08 18:50:34,522 INFO L125 PetriNetUnfolderBase]: For 561/718 co-relation queries the response was YES. [2024-11-08 18:50:34,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5500 conditions, 2727 events. 1258/2727 cut-off events. For 561/718 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 21469 event pairs, 365 based on Foata normal form. 105/2184 useless extension candidates. Maximal degree in co-relation 5478. Up to 993 conditions per place. [2024-11-08 18:50:34,547 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 44 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2024-11-08 18:50:34,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 75 transitions, 325 flow [2024-11-08 18:50:34,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:50:34,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 18:50:34,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 129 transitions. [2024-11-08 18:50:34,551 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8113207547169812 [2024-11-08 18:50:34,551 INFO L175 Difference]: Start difference. First operand has 61 places, 57 transitions, 173 flow. Second operand 3 states and 129 transitions. [2024-11-08 18:50:34,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 75 transitions, 325 flow [2024-11-08 18:50:34,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 75 transitions, 323 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 18:50:34,557 INFO L231 Difference]: Finished difference. Result has 63 places, 57 transitions, 179 flow [2024-11-08 18:50:34,557 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=179, PETRI_PLACES=63, PETRI_TRANSITIONS=57} [2024-11-08 18:50:34,558 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 11 predicate places. [2024-11-08 18:50:34,558 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 57 transitions, 179 flow [2024-11-08 18:50:34,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:50:34,559 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:50:34,559 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:50:34,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 18:50:34,562 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 18:50:34,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:50:34,562 INFO L85 PathProgramCache]: Analyzing trace with hash 689054452, now seen corresponding path program 1 times [2024-11-08 18:50:34,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:50:34,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826948791] [2024-11-08 18:50:34,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:50:34,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:50:34,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:50:34,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:50:34,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:50:34,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826948791] [2024-11-08 18:50:34,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826948791] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:50:34,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:50:34,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:50:34,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525510148] [2024-11-08 18:50:34,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:50:34,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:50:34,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:50:34,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:50:34,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:50:34,680 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 53 [2024-11-08 18:50:34,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 57 transitions, 179 flow. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:50:34,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:50:34,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 53 [2024-11-08 18:50:34,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:50:35,351 INFO L124 PetriNetUnfolderBase]: 2378/4389 cut-off events. [2024-11-08 18:50:35,351 INFO L125 PetriNetUnfolderBase]: For 1326/1773 co-relation queries the response was YES. [2024-11-08 18:50:35,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9805 conditions, 4389 events. 2378/4389 cut-off events. For 1326/1773 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 33182 event pairs, 457 based on Foata normal form. 319/3959 useless extension candidates. Maximal degree in co-relation 9781. Up to 2321 conditions per place. [2024-11-08 18:50:35,399 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 62 selfloop transitions, 3 changer transitions 0/90 dead transitions. [2024-11-08 18:50:35,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 90 transitions, 419 flow [2024-11-08 18:50:35,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:50:35,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 18:50:35,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 162 transitions. [2024-11-08 18:50:35,401 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7641509433962265 [2024-11-08 18:50:35,401 INFO L175 Difference]: Start difference. First operand has 63 places, 57 transitions, 179 flow. Second operand 4 states and 162 transitions. [2024-11-08 18:50:35,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 90 transitions, 419 flow [2024-11-08 18:50:35,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 90 transitions, 411 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 18:50:35,408 INFO L231 Difference]: Finished difference. Result has 66 places, 59 transitions, 201 flow [2024-11-08 18:50:35,408 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=201, PETRI_PLACES=66, PETRI_TRANSITIONS=59} [2024-11-08 18:50:35,409 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 14 predicate places. [2024-11-08 18:50:35,409 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 59 transitions, 201 flow [2024-11-08 18:50:35,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:50:35,409 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:50:35,411 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:50:35,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 18:50:35,411 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 18:50:35,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:50:35,412 INFO L85 PathProgramCache]: Analyzing trace with hash -28907008, now seen corresponding path program 1 times [2024-11-08 18:50:35,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:50:35,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155053312] [2024-11-08 18:50:35,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:50:35,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:50:35,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:50:35,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:50:35,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:50:35,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155053312] [2024-11-08 18:50:35,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155053312] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:50:35,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:50:35,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:50:35,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740422487] [2024-11-08 18:50:35,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:50:35,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:50:35,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:50:35,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:50:35,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:50:35,510 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 53 [2024-11-08 18:50:35,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 59 transitions, 201 flow. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:50:35,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:50:35,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 53 [2024-11-08 18:50:35,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:50:36,056 INFO L124 PetriNetUnfolderBase]: 1874/3805 cut-off events. [2024-11-08 18:50:36,057 INFO L125 PetriNetUnfolderBase]: For 1100/1645 co-relation queries the response was YES. [2024-11-08 18:50:36,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8659 conditions, 3805 events. 1874/3805 cut-off events. For 1100/1645 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 30148 event pairs, 227 based on Foata normal form. 447/3619 useless extension candidates. Maximal degree in co-relation 8633. Up to 2025 conditions per place. [2024-11-08 18:50:36,090 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 64 selfloop transitions, 3 changer transitions 0/94 dead transitions. [2024-11-08 18:50:36,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 94 transitions, 463 flow [2024-11-08 18:50:36,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:50:36,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 18:50:36,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 164 transitions. [2024-11-08 18:50:36,092 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7735849056603774 [2024-11-08 18:50:36,092 INFO L175 Difference]: Start difference. First operand has 66 places, 59 transitions, 201 flow. Second operand 4 states and 164 transitions. [2024-11-08 18:50:36,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 94 transitions, 463 flow [2024-11-08 18:50:36,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 94 transitions, 459 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 18:50:36,097 INFO L231 Difference]: Finished difference. Result has 70 places, 60 transitions, 221 flow [2024-11-08 18:50:36,097 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=221, PETRI_PLACES=70, PETRI_TRANSITIONS=60} [2024-11-08 18:50:36,098 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 18 predicate places. [2024-11-08 18:50:36,098 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 60 transitions, 221 flow [2024-11-08 18:50:36,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:50:36,098 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:50:36,099 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:50:36,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 18:50:36,099 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 18:50:36,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:50:36,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1399838103, now seen corresponding path program 1 times [2024-11-08 18:50:36,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:50:36,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381402524] [2024-11-08 18:50:36,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:50:36,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:50:36,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:50:36,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:50:36,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:50:36,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381402524] [2024-11-08 18:50:36,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381402524] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:50:36,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:50:36,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 18:50:36,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202552543] [2024-11-08 18:50:36,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:50:36,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 18:50:36,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:50:36,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 18:50:36,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:50:36,218 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 53 [2024-11-08 18:50:36,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 60 transitions, 221 flow. Second operand has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:50:36,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:50:36,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 53 [2024-11-08 18:50:36,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:50:36,625 INFO L124 PetriNetUnfolderBase]: 1452/2999 cut-off events. [2024-11-08 18:50:36,625 INFO L125 PetriNetUnfolderBase]: For 1510/1894 co-relation queries the response was YES. [2024-11-08 18:50:36,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7594 conditions, 2999 events. 1452/2999 cut-off events. For 1510/1894 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 21996 event pairs, 216 based on Foata normal form. 77/2720 useless extension candidates. Maximal degree in co-relation 7563. Up to 1291 conditions per place. [2024-11-08 18:50:36,651 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 66 selfloop transitions, 7 changer transitions 0/102 dead transitions. [2024-11-08 18:50:36,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 102 transitions, 521 flow [2024-11-08 18:50:36,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 18:50:36,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 18:50:36,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 209 transitions. [2024-11-08 18:50:36,653 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7886792452830189 [2024-11-08 18:50:36,653 INFO L175 Difference]: Start difference. First operand has 70 places, 60 transitions, 221 flow. Second operand 5 states and 209 transitions. [2024-11-08 18:50:36,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 102 transitions, 521 flow [2024-11-08 18:50:36,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 102 transitions, 511 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 18:50:36,662 INFO L231 Difference]: Finished difference. Result has 73 places, 62 transitions, 250 flow [2024-11-08 18:50:36,662 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=250, PETRI_PLACES=73, PETRI_TRANSITIONS=62} [2024-11-08 18:50:36,664 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 21 predicate places. [2024-11-08 18:50:36,664 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 62 transitions, 250 flow [2024-11-08 18:50:36,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:50:36,665 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:50:36,665 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:50:36,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 18:50:36,665 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 18:50:36,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:50:36,666 INFO L85 PathProgramCache]: Analyzing trace with hash 274026820, now seen corresponding path program 1 times [2024-11-08 18:50:36,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:50:36,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825603193] [2024-11-08 18:50:36,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:50:36,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:50:36,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:50:36,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:50:36,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:50:36,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825603193] [2024-11-08 18:50:36,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825603193] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:50:36,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:50:36,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 18:50:36,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812261685] [2024-11-08 18:50:36,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:50:36,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 18:50:36,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:50:36,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 18:50:36,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:50:36,782 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 53 [2024-11-08 18:50:36,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 62 transitions, 250 flow. Second operand has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:50:36,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:50:36,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 53 [2024-11-08 18:50:36,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:50:37,208 INFO L124 PetriNetUnfolderBase]: 1238/2571 cut-off events. [2024-11-08 18:50:37,209 INFO L125 PetriNetUnfolderBase]: For 1744/2093 co-relation queries the response was YES. [2024-11-08 18:50:37,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6926 conditions, 2571 events. 1238/2571 cut-off events. For 1744/2093 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 18246 event pairs, 223 based on Foata normal form. 165/2634 useless extension candidates. Maximal degree in co-relation 6893. Up to 849 conditions per place. [2024-11-08 18:50:37,235 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 66 selfloop transitions, 7 changer transitions 0/102 dead transitions. [2024-11-08 18:50:37,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 102 transitions, 554 flow [2024-11-08 18:50:37,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 18:50:37,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 18:50:37,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 206 transitions. [2024-11-08 18:50:37,237 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7773584905660378 [2024-11-08 18:50:37,238 INFO L175 Difference]: Start difference. First operand has 73 places, 62 transitions, 250 flow. Second operand 5 states and 206 transitions. [2024-11-08 18:50:37,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 102 transitions, 554 flow [2024-11-08 18:50:37,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 102 transitions, 539 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-08 18:50:37,248 INFO L231 Difference]: Finished difference. Result has 75 places, 63 transitions, 264 flow [2024-11-08 18:50:37,249 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=264, PETRI_PLACES=75, PETRI_TRANSITIONS=63} [2024-11-08 18:50:37,249 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 23 predicate places. [2024-11-08 18:50:37,250 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 63 transitions, 264 flow [2024-11-08 18:50:37,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:50:37,250 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:50:37,250 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:50:37,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 18:50:37,250 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 18:50:37,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:50:37,251 INFO L85 PathProgramCache]: Analyzing trace with hash 274268111, now seen corresponding path program 1 times [2024-11-08 18:50:37,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:50:37,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008485467] [2024-11-08 18:50:37,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:50:37,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:50:37,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:50:37,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:50:37,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:50:37,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008485467] [2024-11-08 18:50:37,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008485467] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:50:37,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:50:37,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 18:50:37,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351631743] [2024-11-08 18:50:37,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:50:37,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 18:50:37,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:50:37,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 18:50:37,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:50:37,358 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 53 [2024-11-08 18:50:37,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 63 transitions, 264 flow. Second operand has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:50:37,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:50:37,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 53 [2024-11-08 18:50:37,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:50:37,769 INFO L124 PetriNetUnfolderBase]: 1350/2823 cut-off events. [2024-11-08 18:50:37,770 INFO L125 PetriNetUnfolderBase]: For 2689/3052 co-relation queries the response was YES. [2024-11-08 18:50:37,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7828 conditions, 2823 events. 1350/2823 cut-off events. For 2689/3052 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 20505 event pairs, 279 based on Foata normal form. 119/2938 useless extension candidates. Maximal degree in co-relation 7794. Up to 1236 conditions per place. [2024-11-08 18:50:37,796 INFO L140 encePairwiseOnDemand]: 45/53 looper letters, 65 selfloop transitions, 9 changer transitions 0/103 dead transitions. [2024-11-08 18:50:37,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 103 transitions, 576 flow [2024-11-08 18:50:37,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 18:50:37,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 18:50:37,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 207 transitions. [2024-11-08 18:50:37,798 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7811320754716982 [2024-11-08 18:50:37,799 INFO L175 Difference]: Start difference. First operand has 75 places, 63 transitions, 264 flow. Second operand 5 states and 207 transitions. [2024-11-08 18:50:37,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 103 transitions, 576 flow [2024-11-08 18:50:37,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 103 transitions, 563 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-08 18:50:37,805 INFO L231 Difference]: Finished difference. Result has 78 places, 67 transitions, 316 flow [2024-11-08 18:50:37,806 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=316, PETRI_PLACES=78, PETRI_TRANSITIONS=67} [2024-11-08 18:50:37,806 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 26 predicate places. [2024-11-08 18:50:37,807 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 67 transitions, 316 flow [2024-11-08 18:50:37,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:50:37,807 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:50:37,807 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:50:37,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-08 18:50:37,808 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 18:50:37,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:50:37,808 INFO L85 PathProgramCache]: Analyzing trace with hash 274268110, now seen corresponding path program 1 times [2024-11-08 18:50:37,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:50:37,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48913683] [2024-11-08 18:50:37,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:50:37,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:50:37,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:50:37,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:50:37,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:50:37,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48913683] [2024-11-08 18:50:37,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48913683] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:50:37,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:50:37,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 18:50:37,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649567562] [2024-11-08 18:50:37,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:50:37,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 18:50:37,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:50:37,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 18:50:37,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 18:50:37,901 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 53 [2024-11-08 18:50:37,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 67 transitions, 316 flow. Second operand has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:50:37,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:50:37,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 53 [2024-11-08 18:50:37,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:50:38,269 INFO L124 PetriNetUnfolderBase]: 1168/2501 cut-off events. [2024-11-08 18:50:38,269 INFO L125 PetriNetUnfolderBase]: For 3550/3860 co-relation queries the response was YES. [2024-11-08 18:50:38,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7191 conditions, 2501 events. 1168/2501 cut-off events. For 3550/3860 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 17836 event pairs, 258 based on Foata normal form. 147/2644 useless extension candidates. Maximal degree in co-relation 7154. Up to 1229 conditions per place. [2024-11-08 18:50:38,291 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 54 selfloop transitions, 6 changer transitions 0/89 dead transitions. [2024-11-08 18:50:38,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 89 transitions, 514 flow [2024-11-08 18:50:38,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 18:50:38,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 18:50:38,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 193 transitions. [2024-11-08 18:50:38,293 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7283018867924528 [2024-11-08 18:50:38,293 INFO L175 Difference]: Start difference. First operand has 78 places, 67 transitions, 316 flow. Second operand 5 states and 193 transitions. [2024-11-08 18:50:38,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 89 transitions, 514 flow [2024-11-08 18:50:38,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 89 transitions, 496 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-11-08 18:50:38,302 INFO L231 Difference]: Finished difference. Result has 80 places, 65 transitions, 297 flow [2024-11-08 18:50:38,303 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=297, PETRI_PLACES=80, PETRI_TRANSITIONS=65} [2024-11-08 18:50:38,303 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 28 predicate places. [2024-11-08 18:50:38,304 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 65 transitions, 297 flow [2024-11-08 18:50:38,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:50:38,304 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:50:38,304 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:50:38,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-08 18:50:38,305 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 18:50:38,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:50:38,305 INFO L85 PathProgramCache]: Analyzing trace with hash -286089201, now seen corresponding path program 1 times [2024-11-08 18:50:38,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:50:38,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015324004] [2024-11-08 18:50:38,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:50:38,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:50:38,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:50:38,385 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:50:38,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:50:38,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015324004] [2024-11-08 18:50:38,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015324004] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:50:38,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159530607] [2024-11-08 18:50:38,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:50:38,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:50:38,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765017f8-0a98-49f9-899f-33fe5f101148/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:50:38,389 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765017f8-0a98-49f9-899f-33fe5f101148/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:50:38,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765017f8-0a98-49f9-899f-33fe5f101148/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 18:50:38,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:50:38,468 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 18:50:38,473 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:50:38,561 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:50:38,561 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 18:50:38,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159530607] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:50:38,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 18:50:38,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-08 18:50:38,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710164550] [2024-11-08 18:50:38,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:50:38,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 18:50:38,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:50:38,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 18:50:38,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-08 18:50:38,588 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 53 [2024-11-08 18:50:38,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 65 transitions, 297 flow. Second operand has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 6 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:50:38,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:50:38,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 53 [2024-11-08 18:50:38,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:50:39,157 INFO L124 PetriNetUnfolderBase]: 1723/3208 cut-off events. [2024-11-08 18:50:39,157 INFO L125 PetriNetUnfolderBase]: For 5090/5563 co-relation queries the response was YES. [2024-11-08 18:50:39,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9675 conditions, 3208 events. 1723/3208 cut-off events. For 5090/5563 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 22423 event pairs, 325 based on Foata normal form. 141/3245 useless extension candidates. Maximal degree in co-relation 9639. Up to 1368 conditions per place. [2024-11-08 18:50:39,191 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 86 selfloop transitions, 5 changer transitions 0/116 dead transitions. [2024-11-08 18:50:39,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 116 transitions, 719 flow [2024-11-08 18:50:39,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 18:50:39,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 18:50:39,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 226 transitions. [2024-11-08 18:50:39,193 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.710691823899371 [2024-11-08 18:50:39,194 INFO L175 Difference]: Start difference. First operand has 80 places, 65 transitions, 297 flow. Second operand 6 states and 226 transitions. [2024-11-08 18:50:39,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 116 transitions, 719 flow [2024-11-08 18:50:39,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 116 transitions, 710 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-08 18:50:39,205 INFO L231 Difference]: Finished difference. Result has 81 places, 64 transitions, 294 flow [2024-11-08 18:50:39,205 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=294, PETRI_PLACES=81, PETRI_TRANSITIONS=64} [2024-11-08 18:50:39,206 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 29 predicate places. [2024-11-08 18:50:39,206 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 64 transitions, 294 flow [2024-11-08 18:50:39,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 6 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:50:39,207 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:50:39,207 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:50:39,232 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765017f8-0a98-49f9-899f-33fe5f101148/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 18:50:39,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765017f8-0a98-49f9-899f-33fe5f101148/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-08 18:50:39,412 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 18:50:39,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:50:39,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1297340425, now seen corresponding path program 1 times [2024-11-08 18:50:39,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:50:39,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611441994] [2024-11-08 18:50:39,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:50:39,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:50:39,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:50:39,504 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:50:39,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:50:39,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611441994] [2024-11-08 18:50:39,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611441994] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:50:39,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089070246] [2024-11-08 18:50:39,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:50:39,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:50:39,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765017f8-0a98-49f9-899f-33fe5f101148/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:50:39,507 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765017f8-0a98-49f9-899f-33fe5f101148/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:50:39,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765017f8-0a98-49f9-899f-33fe5f101148/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 18:50:39,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:50:39,578 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 18:50:39,579 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:50:39,750 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:50:39,750 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 18:50:39,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089070246] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:50:39,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 18:50:39,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2024-11-08 18:50:39,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745593972] [2024-11-08 18:50:39,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:50:39,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:50:39,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:50:39,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:50:39,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-08 18:50:39,768 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 53 [2024-11-08 18:50:39,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 64 transitions, 294 flow. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:50:39,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:50:39,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 53 [2024-11-08 18:50:39,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:50:40,174 INFO L124 PetriNetUnfolderBase]: 1168/2762 cut-off events. [2024-11-08 18:50:40,174 INFO L125 PetriNetUnfolderBase]: For 4282/4478 co-relation queries the response was YES. [2024-11-08 18:50:40,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7497 conditions, 2762 events. 1168/2762 cut-off events. For 4282/4478 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 21829 event pairs, 187 based on Foata normal form. 122/2803 useless extension candidates. Maximal degree in co-relation 7462. Up to 1216 conditions per place. [2024-11-08 18:50:40,202 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 54 selfloop transitions, 2 changer transitions 0/85 dead transitions. [2024-11-08 18:50:40,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 85 transitions, 537 flow [2024-11-08 18:50:40,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:50:40,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 18:50:40,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 156 transitions. [2024-11-08 18:50:40,204 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7358490566037735 [2024-11-08 18:50:40,205 INFO L175 Difference]: Start difference. First operand has 81 places, 64 transitions, 294 flow. Second operand 4 states and 156 transitions. [2024-11-08 18:50:40,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 85 transitions, 537 flow [2024-11-08 18:50:40,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 85 transitions, 531 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-08 18:50:40,212 INFO L231 Difference]: Finished difference. Result has 80 places, 63 transitions, 289 flow [2024-11-08 18:50:40,213 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=289, PETRI_PLACES=80, PETRI_TRANSITIONS=63} [2024-11-08 18:50:40,213 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 28 predicate places. [2024-11-08 18:50:40,214 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 63 transitions, 289 flow [2024-11-08 18:50:40,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:50:40,214 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:50:40,214 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:50:40,237 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765017f8-0a98-49f9-899f-33fe5f101148/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 18:50:40,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765017f8-0a98-49f9-899f-33fe5f101148/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-08 18:50:40,416 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 18:50:40,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:50:40,417 INFO L85 PathProgramCache]: Analyzing trace with hash -278830309, now seen corresponding path program 1 times [2024-11-08 18:50:40,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:50:40,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376756206] [2024-11-08 18:50:40,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:50:40,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:50:40,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:50:40,473 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 18:50:40,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:50:40,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376756206] [2024-11-08 18:50:40,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376756206] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:50:40,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:50:40,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:50:40,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906455030] [2024-11-08 18:50:40,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:50:40,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:50:40,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:50:40,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:50:40,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:50:40,487 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 53 [2024-11-08 18:50:40,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 63 transitions, 289 flow. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:50:40,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:50:40,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 53 [2024-11-08 18:50:40,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:50:41,137 INFO L124 PetriNetUnfolderBase]: 2118/3986 cut-off events. [2024-11-08 18:50:41,137 INFO L125 PetriNetUnfolderBase]: For 6443/7287 co-relation queries the response was YES. [2024-11-08 18:50:41,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11915 conditions, 3986 events. 2118/3986 cut-off events. For 6443/7287 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 29101 event pairs, 1026 based on Foata normal form. 208/4045 useless extension candidates. Maximal degree in co-relation 11880. Up to 1979 conditions per place. [2024-11-08 18:50:41,190 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 70 selfloop transitions, 6 changer transitions 0/98 dead transitions. [2024-11-08 18:50:41,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 98 transitions, 611 flow [2024-11-08 18:50:41,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:50:41,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 18:50:41,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 151 transitions. [2024-11-08 18:50:41,193 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7122641509433962 [2024-11-08 18:50:41,193 INFO L175 Difference]: Start difference. First operand has 80 places, 63 transitions, 289 flow. Second operand 4 states and 151 transitions. [2024-11-08 18:50:41,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 98 transitions, 611 flow [2024-11-08 18:50:41,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 98 transitions, 602 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-08 18:50:41,210 INFO L231 Difference]: Finished difference. Result has 80 places, 62 transitions, 294 flow [2024-11-08 18:50:41,210 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=294, PETRI_PLACES=80, PETRI_TRANSITIONS=62} [2024-11-08 18:50:41,211 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 28 predicate places. [2024-11-08 18:50:41,211 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 62 transitions, 294 flow [2024-11-08 18:50:41,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:50:41,212 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:50:41,212 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:50:41,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-08 18:50:41,213 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 18:50:41,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:50:41,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1562847782, now seen corresponding path program 1 times [2024-11-08 18:50:41,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:50:41,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585647571] [2024-11-08 18:50:41,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:50:41,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:50:41,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:50:41,315 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:50:41,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:50:41,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585647571] [2024-11-08 18:50:41,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585647571] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:50:41,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795636651] [2024-11-08 18:50:41,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:50:41,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:50:41,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765017f8-0a98-49f9-899f-33fe5f101148/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:50:41,320 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765017f8-0a98-49f9-899f-33fe5f101148/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:50:41,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765017f8-0a98-49f9-899f-33fe5f101148/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 18:50:41,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:50:41,416 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 18:50:41,417 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:50:41,544 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:50:41,545 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:50:41,615 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:50:41,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795636651] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:50:41,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:50:41,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2024-11-08 18:50:41,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559105724] [2024-11-08 18:50:41,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:50:41,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 18:50:41,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:50:41,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 18:50:41,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2024-11-08 18:50:41,637 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 53 [2024-11-08 18:50:41,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 62 transitions, 294 flow. Second operand has 8 states, 8 states have (on average 32.375) internal successors, (259), 8 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:50:41,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:50:41,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 53 [2024-11-08 18:50:41,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:50:42,927 INFO L124 PetriNetUnfolderBase]: 3218/7231 cut-off events. [2024-11-08 18:50:42,930 INFO L125 PetriNetUnfolderBase]: For 12411/12871 co-relation queries the response was YES. [2024-11-08 18:50:42,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19401 conditions, 7231 events. 3218/7231 cut-off events. For 12411/12871 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 62368 event pairs, 187 based on Foata normal form. 370/7520 useless extension candidates. Maximal degree in co-relation 19366. Up to 1217 conditions per place. [2024-11-08 18:50:42,996 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 129 selfloop transitions, 5 changer transitions 0/161 dead transitions. [2024-11-08 18:50:42,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 161 transitions, 1142 flow [2024-11-08 18:50:42,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 18:50:42,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 18:50:42,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 261 transitions. [2024-11-08 18:50:42,998 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8207547169811321 [2024-11-08 18:50:42,998 INFO L175 Difference]: Start difference. First operand has 80 places, 62 transitions, 294 flow. Second operand 6 states and 261 transitions. [2024-11-08 18:50:42,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 161 transitions, 1142 flow [2024-11-08 18:50:43,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 161 transitions, 1126 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 18:50:43,010 INFO L231 Difference]: Finished difference. Result has 86 places, 65 transitions, 322 flow [2024-11-08 18:50:43,010 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=322, PETRI_PLACES=86, PETRI_TRANSITIONS=65} [2024-11-08 18:50:43,012 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 34 predicate places. [2024-11-08 18:50:43,012 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 65 transitions, 322 flow [2024-11-08 18:50:43,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.375) internal successors, (259), 8 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:50:43,013 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:50:43,014 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:50:43,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765017f8-0a98-49f9-899f-33fe5f101148/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-08 18:50:43,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765017f8-0a98-49f9-899f-33fe5f101148/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:50:43,214 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 18:50:43,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:50:43,215 INFO L85 PathProgramCache]: Analyzing trace with hash -254368722, now seen corresponding path program 1 times [2024-11-08 18:50:43,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:50:43,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683105865] [2024-11-08 18:50:43,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:50:43,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:50:43,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:50:43,302 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:50:43,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:50:43,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683105865] [2024-11-08 18:50:43,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683105865] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:50:43,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210084772] [2024-11-08 18:50:43,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:50:43,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:50:43,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765017f8-0a98-49f9-899f-33fe5f101148/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:50:43,307 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765017f8-0a98-49f9-899f-33fe5f101148/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:50:43,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765017f8-0a98-49f9-899f-33fe5f101148/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 18:50:43,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:50:43,376 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 18:50:43,377 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:50:43,420 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:50:43,420 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 18:50:43,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [210084772] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:50:43,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 18:50:43,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-08 18:50:43,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506168742] [2024-11-08 18:50:43,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:50:43,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 18:50:43,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:50:43,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 18:50:43,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-08 18:50:43,439 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 53 [2024-11-08 18:50:43,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 65 transitions, 322 flow. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:50:43,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:50:43,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 53 [2024-11-08 18:50:43,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:50:44,598 INFO L124 PetriNetUnfolderBase]: 4393/8099 cut-off events. [2024-11-08 18:50:44,599 INFO L125 PetriNetUnfolderBase]: For 15530/16016 co-relation queries the response was YES. [2024-11-08 18:50:44,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25015 conditions, 8099 events. 4393/8099 cut-off events. For 15530/16016 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 62345 event pairs, 833 based on Foata normal form. 162/8057 useless extension candidates. Maximal degree in co-relation 24976. Up to 3420 conditions per place. [2024-11-08 18:50:44,699 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 92 selfloop transitions, 5 changer transitions 0/119 dead transitions. [2024-11-08 18:50:44,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 119 transitions, 826 flow [2024-11-08 18:50:44,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 18:50:44,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 18:50:44,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 220 transitions. [2024-11-08 18:50:44,701 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6918238993710691 [2024-11-08 18:50:44,701 INFO L175 Difference]: Start difference. First operand has 86 places, 65 transitions, 322 flow. Second operand 6 states and 220 transitions. [2024-11-08 18:50:44,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 119 transitions, 826 flow [2024-11-08 18:50:44,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 119 transitions, 784 flow, removed 16 selfloop flow, removed 2 redundant places. [2024-11-08 18:50:44,717 INFO L231 Difference]: Finished difference. Result has 88 places, 64 transitions, 316 flow [2024-11-08 18:50:44,718 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=316, PETRI_PLACES=88, PETRI_TRANSITIONS=64} [2024-11-08 18:50:44,718 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 36 predicate places. [2024-11-08 18:50:44,718 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 64 transitions, 316 flow [2024-11-08 18:50:44,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:50:44,719 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:50:44,719 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:50:44,740 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765017f8-0a98-49f9-899f-33fe5f101148/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 18:50:44,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765017f8-0a98-49f9-899f-33fe5f101148/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:50:44,920 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 18:50:44,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:50:44,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1203641263, now seen corresponding path program 1 times [2024-11-08 18:50:44,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:50:44,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116328647] [2024-11-08 18:50:44,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:50:44,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:50:44,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:50:45,005 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:50:45,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:50:45,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116328647] [2024-11-08 18:50:45,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116328647] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:50:45,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160878248] [2024-11-08 18:50:45,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:50:45,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:50:45,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765017f8-0a98-49f9-899f-33fe5f101148/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:50:45,008 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765017f8-0a98-49f9-899f-33fe5f101148/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:50:45,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765017f8-0a98-49f9-899f-33fe5f101148/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 18:50:45,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:50:45,078 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 18:50:45,079 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:50:45,126 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:50:45,126 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 18:50:45,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [160878248] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:50:45,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 18:50:45,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-08 18:50:45,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452561133] [2024-11-08 18:50:45,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:50:45,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 18:50:45,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:50:45,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 18:50:45,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-08 18:50:45,151 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 53 [2024-11-08 18:50:45,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 64 transitions, 316 flow. Second operand has 6 states, 6 states have (on average 28.666666666666668) internal successors, (172), 6 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:50:45,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:50:45,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 53 [2024-11-08 18:50:45,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:50:46,421 INFO L124 PetriNetUnfolderBase]: 4130/7910 cut-off events. [2024-11-08 18:50:46,421 INFO L125 PetriNetUnfolderBase]: For 16960/17171 co-relation queries the response was YES. [2024-11-08 18:50:46,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24138 conditions, 7910 events. 4130/7910 cut-off events. For 16960/17171 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 62279 event pairs, 187 based on Foata normal form. 228/7829 useless extension candidates. Maximal degree in co-relation 24099. Up to 3952 conditions per place. [2024-11-08 18:50:46,482 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 98 selfloop transitions, 8 changer transitions 0/129 dead transitions. [2024-11-08 18:50:46,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 129 transitions, 941 flow [2024-11-08 18:50:46,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 18:50:46,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 18:50:46,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 226 transitions. [2024-11-08 18:50:46,486 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.710691823899371 [2024-11-08 18:50:46,486 INFO L175 Difference]: Start difference. First operand has 88 places, 64 transitions, 316 flow. Second operand 6 states and 226 transitions. [2024-11-08 18:50:46,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 129 transitions, 941 flow [2024-11-08 18:50:46,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 129 transitions, 933 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-08 18:50:46,511 INFO L231 Difference]: Finished difference. Result has 89 places, 63 transitions, 323 flow [2024-11-08 18:50:46,511 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=323, PETRI_PLACES=89, PETRI_TRANSITIONS=63} [2024-11-08 18:50:46,512 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 37 predicate places. [2024-11-08 18:50:46,512 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 63 transitions, 323 flow [2024-11-08 18:50:46,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.666666666666668) internal successors, (172), 6 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:50:46,513 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:50:46,513 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:50:46,539 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765017f8-0a98-49f9-899f-33fe5f101148/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 18:50:46,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765017f8-0a98-49f9-899f-33fe5f101148/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-08 18:50:46,714 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 18:50:46,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:50:46,715 INFO L85 PathProgramCache]: Analyzing trace with hash 704504554, now seen corresponding path program 1 times [2024-11-08 18:50:46,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:50:46,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837684366] [2024-11-08 18:50:46,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:50:46,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:50:46,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:50:46,763 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 18:50:46,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:50:46,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837684366] [2024-11-08 18:50:46,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837684366] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:50:46,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:50:46,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:50:46,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431909007] [2024-11-08 18:50:46,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:50:46,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:50:46,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:50:46,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:50:46,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:50:46,781 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 53 [2024-11-08 18:50:46,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 63 transitions, 323 flow. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:50:46,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:50:46,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 53 [2024-11-08 18:50:46,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:50:47,894 INFO L124 PetriNetUnfolderBase]: 5275/8873 cut-off events. [2024-11-08 18:50:47,894 INFO L125 PetriNetUnfolderBase]: For 16786/17110 co-relation queries the response was YES. [2024-11-08 18:50:47,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29410 conditions, 8873 events. 5275/8873 cut-off events. For 16786/17110 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 65183 event pairs, 2749 based on Foata normal form. 360/8922 useless extension candidates. Maximal degree in co-relation 29371. Up to 5007 conditions per place. [2024-11-08 18:50:47,940 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 75 selfloop transitions, 6 changer transitions 0/100 dead transitions. [2024-11-08 18:50:47,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 100 transitions, 705 flow [2024-11-08 18:50:47,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:50:47,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 18:50:47,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 147 transitions. [2024-11-08 18:50:47,942 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6933962264150944 [2024-11-08 18:50:47,942 INFO L175 Difference]: Start difference. First operand has 89 places, 63 transitions, 323 flow. Second operand 4 states and 147 transitions. [2024-11-08 18:50:47,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 100 transitions, 705 flow [2024-11-08 18:50:47,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 100 transitions, 690 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-08 18:50:47,967 INFO L231 Difference]: Finished difference. Result has 88 places, 62 transitions, 326 flow [2024-11-08 18:50:47,967 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=326, PETRI_PLACES=88, PETRI_TRANSITIONS=62} [2024-11-08 18:50:47,967 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 36 predicate places. [2024-11-08 18:50:47,968 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 62 transitions, 326 flow [2024-11-08 18:50:47,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:50:47,968 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:50:47,968 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:50:47,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-08 18:50:47,968 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 18:50:47,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:50:47,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1341826200, now seen corresponding path program 1 times [2024-11-08 18:50:47,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:50:47,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928308989] [2024-11-08 18:50:47,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:50:47,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:50:47,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:50:48,014 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 18:50:48,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:50:48,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928308989] [2024-11-08 18:50:48,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928308989] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:50:48,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:50:48,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:50:48,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589881543] [2024-11-08 18:50:48,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:50:48,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:50:48,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:50:48,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:50:48,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:50:48,027 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2024-11-08 18:50:48,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 62 transitions, 326 flow. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:50:48,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:50:48,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2024-11-08 18:50:48,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:50:49,379 INFO L124 PetriNetUnfolderBase]: 4883/8484 cut-off events. [2024-11-08 18:50:49,380 INFO L125 PetriNetUnfolderBase]: For 22783/22783 co-relation queries the response was YES. [2024-11-08 18:50:49,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28277 conditions, 8484 events. 4883/8484 cut-off events. For 22783/22783 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 62987 event pairs, 1417 based on Foata normal form. 532/8919 useless extension candidates. Maximal degree in co-relation 28238. Up to 3649 conditions per place. [2024-11-08 18:50:49,422 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 76 selfloop transitions, 9 changer transitions 0/105 dead transitions. [2024-11-08 18:50:49,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 105 transitions, 772 flow [2024-11-08 18:50:49,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:50:49,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 18:50:49,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 152 transitions. [2024-11-08 18:50:49,423 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7169811320754716 [2024-11-08 18:50:49,424 INFO L175 Difference]: Start difference. First operand has 88 places, 62 transitions, 326 flow. Second operand 4 states and 152 transitions. [2024-11-08 18:50:49,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 105 transitions, 772 flow [2024-11-08 18:50:49,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 105 transitions, 756 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-08 18:50:49,440 INFO L231 Difference]: Finished difference. Result has 88 places, 61 transitions, 332 flow [2024-11-08 18:50:49,440 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=332, PETRI_PLACES=88, PETRI_TRANSITIONS=61} [2024-11-08 18:50:49,440 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 36 predicate places. [2024-11-08 18:50:49,440 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 61 transitions, 332 flow [2024-11-08 18:50:49,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:50:49,441 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:50:49,441 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:50:49,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-08 18:50:49,441 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 18:50:49,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:50:49,441 INFO L85 PathProgramCache]: Analyzing trace with hash 593073353, now seen corresponding path program 1 times [2024-11-08 18:50:49,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:50:49,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085924930] [2024-11-08 18:50:49,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:50:49,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:50:49,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:50:49,520 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:50:49,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:50:49,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085924930] [2024-11-08 18:50:49,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085924930] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:50:49,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681750823] [2024-11-08 18:50:49,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:50:49,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:50:49,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765017f8-0a98-49f9-899f-33fe5f101148/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:50:49,523 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765017f8-0a98-49f9-899f-33fe5f101148/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:50:49,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765017f8-0a98-49f9-899f-33fe5f101148/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 18:50:49,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:50:49,598 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 18:50:49,599 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:50:49,724 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:50:49,725 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:50:49,826 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:50:49,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681750823] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:50:49,827 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:50:49,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2024-11-08 18:50:49,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296483338] [2024-11-08 18:50:49,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:50:49,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-08 18:50:49,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:50:49,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-08 18:50:49,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2024-11-08 18:50:49,861 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 53 [2024-11-08 18:50:49,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 61 transitions, 332 flow. Second operand has 14 states, 14 states have (on average 31.642857142857142) internal successors, (443), 14 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:50:49,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:50:49,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 53 [2024-11-08 18:50:49,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:50:54,187 INFO L124 PetriNetUnfolderBase]: 11247/23465 cut-off events. [2024-11-08 18:50:54,187 INFO L125 PetriNetUnfolderBase]: For 69193/69193 co-relation queries the response was YES. [2024-11-08 18:50:54,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78922 conditions, 23465 events. 11247/23465 cut-off events. For 69193/69193 co-relation queries the response was YES. Maximal size of possible extension queue 754. Compared 228854 event pairs, 341 based on Foata normal form. 1442/24903 useless extension candidates. Maximal degree in co-relation 78880. Up to 4201 conditions per place. [2024-11-08 18:50:54,408 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 393 selfloop transitions, 71 changer transitions 0/486 dead transitions. [2024-11-08 18:50:54,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 486 transitions, 4012 flow [2024-11-08 18:50:54,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-08 18:50:54,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-08 18:50:54,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 1157 transitions. [2024-11-08 18:50:54,414 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7796495956873315 [2024-11-08 18:50:54,415 INFO L175 Difference]: Start difference. First operand has 88 places, 61 transitions, 332 flow. Second operand 28 states and 1157 transitions. [2024-11-08 18:50:54,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 486 transitions, 4012 flow [2024-11-08 18:50:54,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 486 transitions, 3710 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 18:50:54,512 INFO L231 Difference]: Finished difference. Result has 129 places, 133 transitions, 1286 flow [2024-11-08 18:50:54,512 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1286, PETRI_PLACES=129, PETRI_TRANSITIONS=133} [2024-11-08 18:50:54,513 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 77 predicate places. [2024-11-08 18:50:54,513 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 133 transitions, 1286 flow [2024-11-08 18:50:54,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 31.642857142857142) internal successors, (443), 14 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:50:54,514 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:50:54,514 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:50:54,544 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765017f8-0a98-49f9-899f-33fe5f101148/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-08 18:50:54,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765017f8-0a98-49f9-899f-33fe5f101148/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:50:54,715 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 18:50:54,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:50:54,716 INFO L85 PathProgramCache]: Analyzing trace with hash 399273466, now seen corresponding path program 1 times [2024-11-08 18:50:54,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:50:54,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306598019] [2024-11-08 18:50:54,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:50:54,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:50:54,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:50:54,854 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:50:54,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:50:54,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306598019] [2024-11-08 18:50:54,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306598019] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:50:54,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835438479] [2024-11-08 18:50:54,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:50:54,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:50:54,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765017f8-0a98-49f9-899f-33fe5f101148/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:50:54,858 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765017f8-0a98-49f9-899f-33fe5f101148/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:50:54,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765017f8-0a98-49f9-899f-33fe5f101148/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 18:50:54,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:50:54,942 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 18:50:54,944 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:50:55,108 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:50:55,108 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 18:50:55,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835438479] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:50:55,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 18:50:55,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2024-11-08 18:50:55,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666817923] [2024-11-08 18:50:55,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:50:55,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 18:50:55,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:50:55,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 18:50:55,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-08 18:50:55,126 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 53 [2024-11-08 18:50:55,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 133 transitions, 1286 flow. Second operand has 6 states, 6 states have (on average 31.166666666666668) internal successors, (187), 6 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:50:55,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:50:55,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 53 [2024-11-08 18:50:55,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:50:58,423 INFO L124 PetriNetUnfolderBase]: 9393/20737 cut-off events. [2024-11-08 18:50:58,423 INFO L125 PetriNetUnfolderBase]: For 207024/207024 co-relation queries the response was YES. [2024-11-08 18:50:58,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81772 conditions, 20737 events. 9393/20737 cut-off events. For 207024/207024 co-relation queries the response was YES. Maximal size of possible extension queue 640. Compared 205252 event pairs, 1649 based on Foata normal form. 1656/22331 useless extension candidates. Maximal degree in co-relation 81711. Up to 6826 conditions per place. [2024-11-08 18:50:58,826 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 88 selfloop transitions, 27 changer transitions 0/137 dead transitions. [2024-11-08 18:50:58,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 137 transitions, 1421 flow [2024-11-08 18:50:58,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 18:50:58,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 18:50:58,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 227 transitions. [2024-11-08 18:50:58,828 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7138364779874213 [2024-11-08 18:50:58,828 INFO L175 Difference]: Start difference. First operand has 129 places, 133 transitions, 1286 flow. Second operand 6 states and 227 transitions. [2024-11-08 18:50:58,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 137 transitions, 1421 flow [2024-11-08 18:51:00,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 137 transitions, 1144 flow, removed 113 selfloop flow, removed 13 redundant places. [2024-11-08 18:51:00,730 INFO L231 Difference]: Finished difference. Result has 117 places, 101 transitions, 725 flow [2024-11-08 18:51:00,730 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=590, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=725, PETRI_PLACES=117, PETRI_TRANSITIONS=101} [2024-11-08 18:51:00,731 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 65 predicate places. [2024-11-08 18:51:00,731 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 101 transitions, 725 flow [2024-11-08 18:51:00,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.166666666666668) internal successors, (187), 6 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:51:00,732 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:51:00,732 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:51:00,755 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765017f8-0a98-49f9-899f-33fe5f101148/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-08 18:51:00,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765017f8-0a98-49f9-899f-33fe5f101148/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:51:00,936 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 18:51:00,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:51:00,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1263102071, now seen corresponding path program 1 times [2024-11-08 18:51:00,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:51:00,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445189638] [2024-11-08 18:51:00,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:51:00,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:51:00,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:51:01,107 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:51:01,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:51:01,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445189638] [2024-11-08 18:51:01,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445189638] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:51:01,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541925081] [2024-11-08 18:51:01,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:51:01,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:51:01,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765017f8-0a98-49f9-899f-33fe5f101148/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:51:01,111 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765017f8-0a98-49f9-899f-33fe5f101148/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:51:01,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765017f8-0a98-49f9-899f-33fe5f101148/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 18:51:01,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:51:01,192 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 18:51:01,194 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:51:01,423 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:51:01,424 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:51:01,576 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:51:01,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541925081] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:51:01,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:51:01,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2024-11-08 18:51:01,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327110118] [2024-11-08 18:51:01,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:51:01,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-08 18:51:01,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:51:01,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-08 18:51:01,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2024-11-08 18:51:01,621 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 53 [2024-11-08 18:51:01,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 101 transitions, 725 flow. Second operand has 17 states, 17 states have (on average 31.529411764705884) internal successors, (536), 17 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:51:01,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:51:01,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 53 [2024-11-08 18:51:01,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:51:06,559 INFO L124 PetriNetUnfolderBase]: 13285/29345 cut-off events. [2024-11-08 18:51:06,560 INFO L125 PetriNetUnfolderBase]: For 254401/254401 co-relation queries the response was YES. [2024-11-08 18:51:06,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106768 conditions, 29345 events. 13285/29345 cut-off events. For 254401/254401 co-relation queries the response was YES. Maximal size of possible extension queue 857. Compared 305533 event pairs, 539 based on Foata normal form. 908/30195 useless extension candidates. Maximal degree in co-relation 106713. Up to 7399 conditions per place. [2024-11-08 18:51:06,824 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 304 selfloop transitions, 54 changer transitions 0/380 dead transitions. [2024-11-08 18:51:06,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 380 transitions, 3057 flow [2024-11-08 18:51:06,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-08 18:51:06,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-08 18:51:06,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 841 transitions. [2024-11-08 18:51:06,828 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7556154537286612 [2024-11-08 18:51:06,828 INFO L175 Difference]: Start difference. First operand has 117 places, 101 transitions, 725 flow. Second operand 21 states and 841 transitions. [2024-11-08 18:51:06,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 380 transitions, 3057 flow [2024-11-08 18:51:07,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 380 transitions, 3040 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-11-08 18:51:07,449 INFO L231 Difference]: Finished difference. Result has 139 places, 122 transitions, 1120 flow [2024-11-08 18:51:07,450 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=685, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1120, PETRI_PLACES=139, PETRI_TRANSITIONS=122} [2024-11-08 18:51:07,450 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 87 predicate places. [2024-11-08 18:51:07,450 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 122 transitions, 1120 flow [2024-11-08 18:51:07,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 31.529411764705884) internal successors, (536), 17 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:51:07,451 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:51:07,451 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:51:07,469 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765017f8-0a98-49f9-899f-33fe5f101148/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-08 18:51:07,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765017f8-0a98-49f9-899f-33fe5f101148/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:51:07,652 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 18:51:07,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:51:07,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1521931797, now seen corresponding path program 1 times [2024-11-08 18:51:07,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:51:07,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840749810] [2024-11-08 18:51:07,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:51:07,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:51:07,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:51:07,850 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:51:07,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:51:07,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840749810] [2024-11-08 18:51:07,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840749810] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:51:07,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544258778] [2024-11-08 18:51:07,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:51:07,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:51:07,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765017f8-0a98-49f9-899f-33fe5f101148/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:51:07,853 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765017f8-0a98-49f9-899f-33fe5f101148/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:51:07,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765017f8-0a98-49f9-899f-33fe5f101148/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 18:51:07,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:51:07,927 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-08 18:51:07,929 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:51:08,118 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:51:08,118 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:51:08,277 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:51:08,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544258778] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:51:08,277 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:51:08,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2024-11-08 18:51:08,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295954003] [2024-11-08 18:51:08,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:51:08,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-08 18:51:08,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:51:08,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-08 18:51:08,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2024-11-08 18:51:08,324 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 53 [2024-11-08 18:51:08,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 122 transitions, 1120 flow. Second operand has 20 states, 20 states have (on average 31.45) internal successors, (629), 20 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:51:08,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:51:08,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 53 [2024-11-08 18:51:08,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:51:18,313 INFO L124 PetriNetUnfolderBase]: 25129/56597 cut-off events. [2024-11-08 18:51:18,313 INFO L125 PetriNetUnfolderBase]: For 909044/909044 co-relation queries the response was YES. [2024-11-08 18:51:18,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208544 conditions, 56597 events. 25129/56597 cut-off events. For 909044/909044 co-relation queries the response was YES. Maximal size of possible extension queue 1504. Compared 644215 event pairs, 1241 based on Foata normal form. 2988/59581 useless extension candidates. Maximal degree in co-relation 208483. Up to 6607 conditions per place. [2024-11-08 18:51:18,819 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 521 selfloop transitions, 118 changer transitions 0/661 dead transitions. [2024-11-08 18:51:18,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 661 transitions, 5775 flow [2024-11-08 18:51:18,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-08 18:51:18,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2024-11-08 18:51:18,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1492 transitions. [2024-11-08 18:51:18,822 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7608363080061193 [2024-11-08 18:51:18,823 INFO L175 Difference]: Start difference. First operand has 139 places, 122 transitions, 1120 flow. Second operand 37 states and 1492 transitions. [2024-11-08 18:51:18,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 661 transitions, 5775 flow [2024-11-08 18:51:21,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 661 transitions, 5621 flow, removed 56 selfloop flow, removed 13 redundant places. [2024-11-08 18:51:21,240 INFO L231 Difference]: Finished difference. Result has 176 places, 180 transitions, 2153 flow [2024-11-08 18:51:21,240 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=969, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=2153, PETRI_PLACES=176, PETRI_TRANSITIONS=180} [2024-11-08 18:51:21,241 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 124 predicate places. [2024-11-08 18:51:21,241 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 180 transitions, 2153 flow [2024-11-08 18:51:21,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 31.45) internal successors, (629), 20 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:51:21,242 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:51:21,242 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:51:21,254 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765017f8-0a98-49f9-899f-33fe5f101148/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-08 18:51:21,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765017f8-0a98-49f9-899f-33fe5f101148/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-08 18:51:21,442 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 18:51:21,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:51:21,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1496225031, now seen corresponding path program 2 times [2024-11-08 18:51:21,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:51:21,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578687674] [2024-11-08 18:51:21,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:51:21,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:51:21,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:51:21,675 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:51:21,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:51:21,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578687674] [2024-11-08 18:51:21,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578687674] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:51:21,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692900820] [2024-11-08 18:51:21,676 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 18:51:21,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:51:21,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765017f8-0a98-49f9-899f-33fe5f101148/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:51:21,679 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765017f8-0a98-49f9-899f-33fe5f101148/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:51:21,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765017f8-0a98-49f9-899f-33fe5f101148/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 18:51:21,759 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 18:51:21,759 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:51:21,761 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-08 18:51:21,764 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:51:21,966 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:51:21,967 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:51:22,122 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:51:22,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692900820] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:51:22,122 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:51:22,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2024-11-08 18:51:22,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694153990] [2024-11-08 18:51:22,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:51:22,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-08 18:51:22,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:51:22,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-08 18:51:22,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=174, Unknown=0, NotChecked=0, Total=272 [2024-11-08 18:51:22,144 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 53 [2024-11-08 18:51:22,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 180 transitions, 2153 flow. Second operand has 17 states, 17 states have (on average 31.529411764705884) internal successors, (536), 17 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:51:22,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:51:22,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 53 [2024-11-08 18:51:22,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand