./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53e65ecc-7633-4e71-8657-8fad57b4674c/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53e65ecc-7633-4e71-8657-8fad57b4674c/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53e65ecc-7633-4e71-8657-8fad57b4674c/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53e65ecc-7633-4e71-8657-8fad57b4674c/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53e65ecc-7633-4e71-8657-8fad57b4674c/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53e65ecc-7633-4e71-8657-8fad57b4674c/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6aeaf730cbe4eb831d189bfd9925d1660c7714b9e685f389bc2495c0943d6472 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-28 20:37:23,536 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-28 20:37:23,602 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53e65ecc-7633-4e71-8657-8fad57b4674c/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-28 20:37:23,608 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-28 20:37:23,609 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-28 20:37:23,634 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-28 20:37:23,635 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-28 20:37:23,635 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-28 20:37:23,636 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-28 20:37:23,637 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-28 20:37:23,637 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-28 20:37:23,638 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-28 20:37:23,639 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-28 20:37:23,639 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-28 20:37:23,640 INFO L153 SettingsManager]: * Use SBE=true [2023-11-28 20:37:23,640 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-28 20:37:23,641 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-28 20:37:23,641 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-28 20:37:23,642 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-28 20:37:23,642 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-28 20:37:23,643 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-28 20:37:23,644 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-28 20:37:23,644 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-28 20:37:23,644 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-28 20:37:23,645 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-28 20:37:23,645 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-28 20:37:23,646 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-28 20:37:23,646 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-28 20:37:23,646 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-28 20:37:23,647 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-28 20:37:23,647 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-28 20:37:23,648 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-28 20:37:23,648 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-28 20:37:23,648 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 20:37:23,649 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-28 20:37:23,649 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-28 20:37:23,649 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-28 20:37:23,649 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-28 20:37:23,650 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-28 20:37:23,650 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-28 20:37:23,650 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-28 20:37:23,650 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-28 20:37:23,650 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-28 20:37:23,651 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-28 20:37:23,651 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_53e65ecc-7633-4e71-8657-8fad57b4674c/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53e65ecc-7633-4e71-8657-8fad57b4674c/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6aeaf730cbe4eb831d189bfd9925d1660c7714b9e685f389bc2495c0943d6472 [2023-11-28 20:37:23,887 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-28 20:37:23,916 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-28 20:37:23,918 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-28 20:37:23,919 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-28 20:37:23,920 INFO L274 PluginConnector]: CDTParser initialized [2023-11-28 20:37:23,921 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53e65ecc-7633-4e71-8657-8fad57b4674c/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2023-11-28 20:37:26,698 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-28 20:37:26,919 INFO L384 CDTParser]: Found 1 translation units. [2023-11-28 20:37:26,919 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53e65ecc-7633-4e71-8657-8fad57b4674c/sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2023-11-28 20:37:26,935 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53e65ecc-7633-4e71-8657-8fad57b4674c/bin/uautomizer-verify-BQ2R08f2Ya/data/23c6baa34/7609b1c59c9845c4bb4eba1fbdfe04e1/FLAG5a09d94c5 [2023-11-28 20:37:26,947 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53e65ecc-7633-4e71-8657-8fad57b4674c/bin/uautomizer-verify-BQ2R08f2Ya/data/23c6baa34/7609b1c59c9845c4bb4eba1fbdfe04e1 [2023-11-28 20:37:26,949 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-28 20:37:26,950 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-28 20:37:26,951 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-28 20:37:26,951 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-28 20:37:26,956 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-28 20:37:26,957 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:37:26" (1/1) ... [2023-11-28 20:37:26,958 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44e93345 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:37:26, skipping insertion in model container [2023-11-28 20:37:26,958 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:37:26" (1/1) ... [2023-11-28 20:37:27,001 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-28 20:37:27,294 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 20:37:27,308 INFO L202 MainTranslator]: Completed pre-run [2023-11-28 20:37:27,353 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 20:37:27,396 INFO L206 MainTranslator]: Completed translation [2023-11-28 20:37:27,396 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:37:27 WrapperNode [2023-11-28 20:37:27,396 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-28 20:37:27,398 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-28 20:37:27,398 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-28 20:37:27,398 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-28 20:37:27,406 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:37:27" (1/1) ... [2023-11-28 20:37:27,420 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:37:27" (1/1) ... [2023-11-28 20:37:27,447 INFO L138 Inliner]: procedures = 166, calls = 39, calls flagged for inlining = 8, calls inlined = 9, statements flattened = 137 [2023-11-28 20:37:27,448 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-28 20:37:27,448 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-28 20:37:27,449 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-28 20:37:27,449 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-28 20:37:27,460 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:37:27" (1/1) ... [2023-11-28 20:37:27,461 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:37:27" (1/1) ... [2023-11-28 20:37:27,464 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:37:27" (1/1) ... [2023-11-28 20:37:27,481 INFO L175 MemorySlicer]: Split 19 memory accesses to 3 slices as follows [2, 1, 16]. 84 percent of accesses are in the largest equivalence class. The 8 initializations are split as follows [2, 0, 6]. The 4 writes are split as follows [0, 1, 3]. [2023-11-28 20:37:27,482 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:37:27" (1/1) ... [2023-11-28 20:37:27,482 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:37:27" (1/1) ... [2023-11-28 20:37:27,490 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:37:27" (1/1) ... [2023-11-28 20:37:27,494 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:37:27" (1/1) ... [2023-11-28 20:37:27,496 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:37:27" (1/1) ... [2023-11-28 20:37:27,498 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:37:27" (1/1) ... [2023-11-28 20:37:27,501 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-28 20:37:27,502 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-28 20:37:27,503 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-28 20:37:27,503 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-28 20:37:27,504 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:37:27" (1/1) ... [2023-11-28 20:37:27,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 20:37:27,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53e65ecc-7633-4e71-8657-8fad57b4674c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:37:27,534 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53e65ecc-7633-4e71-8657-8fad57b4674c/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-28 20:37:27,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53e65ecc-7633-4e71-8657-8fad57b4674c/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-28 20:37:27,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-28 20:37:27,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-28 20:37:27,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-28 20:37:27,573 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2023-11-28 20:37:27,574 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2023-11-28 20:37:27,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-28 20:37:27,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-28 20:37:27,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-28 20:37:27,574 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-28 20:37:27,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-28 20:37:27,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-28 20:37:27,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-28 20:37:27,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-28 20:37:27,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-28 20:37:27,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-28 20:37:27,575 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-28 20:37:27,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-28 20:37:27,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-28 20:37:27,577 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-28 20:37:27,706 INFO L241 CfgBuilder]: Building ICFG [2023-11-28 20:37:27,708 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-28 20:37:27,941 INFO L282 CfgBuilder]: Performing block encoding [2023-11-28 20:37:28,095 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-28 20:37:28,095 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-28 20:37:28,096 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:37:28 BoogieIcfgContainer [2023-11-28 20:37:28,096 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-28 20:37:28,099 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-28 20:37:28,099 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-28 20:37:28,102 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-28 20:37:28,102 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 08:37:26" (1/3) ... [2023-11-28 20:37:28,103 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@668362d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:37:28, skipping insertion in model container [2023-11-28 20:37:28,103 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:37:27" (2/3) ... [2023-11-28 20:37:28,103 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@668362d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:37:28, skipping insertion in model container [2023-11-28 20:37:28,104 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:37:28" (3/3) ... [2023-11-28 20:37:28,105 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2023-11-28 20:37:28,112 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-28 20:37:28,120 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-28 20:37:28,121 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-28 20:37:28,121 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-28 20:37:28,158 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-28 20:37:28,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 41 transitions, 86 flow [2023-11-28 20:37:28,218 INFO L124 PetriNetUnfolderBase]: 6/40 cut-off events. [2023-11-28 20:37:28,219 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-28 20:37:28,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 40 events. 6/40 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 78 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2023-11-28 20:37:28,223 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 41 transitions, 86 flow [2023-11-28 20:37:28,227 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 40 transitions, 83 flow [2023-11-28 20:37:28,236 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-28 20:37:28,257 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7270076e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-28 20:37:28,258 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-11-28 20:37:28,266 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-28 20:37:28,266 INFO L124 PetriNetUnfolderBase]: 2/19 cut-off events. [2023-11-28 20:37:28,267 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-28 20:37:28,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:37:28,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:37:28,268 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-28 20:37:28,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:37:28,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1783221306, now seen corresponding path program 1 times [2023-11-28 20:37:28,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:37:28,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56022118] [2023-11-28 20:37:28,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:37:28,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:37:28,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:37:28,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:37:28,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:37:28,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56022118] [2023-11-28 20:37:28,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56022118] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:37:28,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:37:28,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:37:28,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077808839] [2023-11-28 20:37:28,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:37:28,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 20:37:28,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:37:28,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 20:37:28,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:37:28,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 41 [2023-11-28 20:37:28,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 40 transitions, 83 flow. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:37:28,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:37:28,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 41 [2023-11-28 20:37:28,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:37:29,123 INFO L124 PetriNetUnfolderBase]: 333/682 cut-off events. [2023-11-28 20:37:29,124 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-28 20:37:29,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1266 conditions, 682 events. 333/682 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 3264 event pairs, 33 based on Foata normal form. 60/604 useless extension candidates. Maximal degree in co-relation 1257. Up to 360 conditions per place. [2023-11-28 20:37:29,133 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 70 selfloop transitions, 9 changer transitions 0/91 dead transitions. [2023-11-28 20:37:29,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 91 transitions, 343 flow [2023-11-28 20:37:29,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 20:37:29,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-28 20:37:29,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 171 transitions. [2023-11-28 20:37:29,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6951219512195121 [2023-11-28 20:37:29,150 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 171 transitions. [2023-11-28 20:37:29,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 171 transitions. [2023-11-28 20:37:29,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:37:29,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 171 transitions. [2023-11-28 20:37:29,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 28.5) internal successors, (171), 6 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:37:29,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 41.0) internal successors, (287), 7 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:37:29,162 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 41.0) internal successors, (287), 7 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:37:29,165 INFO L175 Difference]: Start difference. First operand has 38 places, 40 transitions, 83 flow. Second operand 6 states and 171 transitions. [2023-11-28 20:37:29,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 91 transitions, 343 flow [2023-11-28 20:37:29,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 91 transitions, 342 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-28 20:37:29,173 INFO L231 Difference]: Finished difference. Result has 45 places, 47 transitions, 147 flow [2023-11-28 20:37:29,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=147, PETRI_PLACES=45, PETRI_TRANSITIONS=47} [2023-11-28 20:37:29,178 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 7 predicate places. [2023-11-28 20:37:29,179 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 47 transitions, 147 flow [2023-11-28 20:37:29,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:37:29,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:37:29,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:37:29,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-28 20:37:29,180 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-28 20:37:29,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:37:29,180 INFO L85 PathProgramCache]: Analyzing trace with hash 16282835, now seen corresponding path program 1 times [2023-11-28 20:37:29,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:37:29,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816347242] [2023-11-28 20:37:29,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:37:29,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:37:29,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:37:29,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:37:29,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:37:29,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816347242] [2023-11-28 20:37:29,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816347242] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:37:29,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:37:29,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 20:37:29,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158692945] [2023-11-28 20:37:29,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:37:29,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 20:37:29,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:37:29,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 20:37:29,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:37:29,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2023-11-28 20:37:29,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 47 transitions, 147 flow. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:37:29,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:37:29,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2023-11-28 20:37:29,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:37:29,582 INFO L124 PetriNetUnfolderBase]: 268/592 cut-off events. [2023-11-28 20:37:29,582 INFO L125 PetriNetUnfolderBase]: For 113/115 co-relation queries the response was YES. [2023-11-28 20:37:29,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1274 conditions, 592 events. 268/592 cut-off events. For 113/115 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2820 event pairs, 22 based on Foata normal form. 22/543 useless extension candidates. Maximal degree in co-relation 1260. Up to 324 conditions per place. [2023-11-28 20:37:29,588 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 66 selfloop transitions, 10 changer transitions 0/90 dead transitions. [2023-11-28 20:37:29,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 90 transitions, 388 flow [2023-11-28 20:37:29,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 20:37:29,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-28 20:37:29,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 165 transitions. [2023-11-28 20:37:29,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6707317073170732 [2023-11-28 20:37:29,591 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 165 transitions. [2023-11-28 20:37:29,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 165 transitions. [2023-11-28 20:37:29,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:37:29,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 165 transitions. [2023-11-28 20:37:29,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 27.5) internal successors, (165), 6 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:37:29,596 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 41.0) internal successors, (287), 7 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:37:29,596 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 41.0) internal successors, (287), 7 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:37:29,596 INFO L175 Difference]: Start difference. First operand has 45 places, 47 transitions, 147 flow. Second operand 6 states and 165 transitions. [2023-11-28 20:37:29,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 90 transitions, 388 flow [2023-11-28 20:37:29,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 90 transitions, 386 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-28 20:37:29,603 INFO L231 Difference]: Finished difference. Result has 53 places, 49 transitions, 189 flow [2023-11-28 20:37:29,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=189, PETRI_PLACES=53, PETRI_TRANSITIONS=49} [2023-11-28 20:37:29,604 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 15 predicate places. [2023-11-28 20:37:29,604 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 49 transitions, 189 flow [2023-11-28 20:37:29,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:37:29,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:37:29,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:37:29,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-28 20:37:29,605 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-28 20:37:29,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:37:29,606 INFO L85 PathProgramCache]: Analyzing trace with hash -416927685, now seen corresponding path program 1 times [2023-11-28 20:37:29,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:37:29,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6678680] [2023-11-28 20:37:29,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:37:29,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:37:29,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:37:29,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:37:29,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:37:29,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6678680] [2023-11-28 20:37:29,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6678680] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:37:29,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:37:29,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 20:37:29,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624342362] [2023-11-28 20:37:29,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:37:29,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 20:37:29,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:37:29,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 20:37:29,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:37:29,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 41 [2023-11-28 20:37:29,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 49 transitions, 189 flow. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:37:29,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:37:29,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 41 [2023-11-28 20:37:29,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:37:29,978 INFO L124 PetriNetUnfolderBase]: 411/884 cut-off events. [2023-11-28 20:37:29,978 INFO L125 PetriNetUnfolderBase]: For 510/510 co-relation queries the response was YES. [2023-11-28 20:37:29,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2118 conditions, 884 events. 411/884 cut-off events. For 510/510 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 4611 event pairs, 81 based on Foata normal form. 28/841 useless extension candidates. Maximal degree in co-relation 2099. Up to 427 conditions per place. [2023-11-28 20:37:29,985 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 88 selfloop transitions, 22 changer transitions 0/121 dead transitions. [2023-11-28 20:37:29,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 121 transitions, 712 flow [2023-11-28 20:37:29,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 20:37:29,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-28 20:37:29,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 155 transitions. [2023-11-28 20:37:29,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6300813008130082 [2023-11-28 20:37:29,988 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 155 transitions. [2023-11-28 20:37:29,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 155 transitions. [2023-11-28 20:37:29,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:37:29,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 155 transitions. [2023-11-28 20:37:29,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 25.833333333333332) internal successors, (155), 6 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:37:29,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 41.0) internal successors, (287), 7 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:37:29,991 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 41.0) internal successors, (287), 7 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:37:29,991 INFO L175 Difference]: Start difference. First operand has 53 places, 49 transitions, 189 flow. Second operand 6 states and 155 transitions. [2023-11-28 20:37:29,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 121 transitions, 712 flow [2023-11-28 20:37:29,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 121 transitions, 686 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-28 20:37:29,998 INFO L231 Difference]: Finished difference. Result has 61 places, 66 transitions, 360 flow [2023-11-28 20:37:29,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=360, PETRI_PLACES=61, PETRI_TRANSITIONS=66} [2023-11-28 20:37:30,000 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 23 predicate places. [2023-11-28 20:37:30,000 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 66 transitions, 360 flow [2023-11-28 20:37:30,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:37:30,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:37:30,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:37:30,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-28 20:37:30,001 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting workerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-28 20:37:30,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:37:30,001 INFO L85 PathProgramCache]: Analyzing trace with hash -39855900, now seen corresponding path program 1 times [2023-11-28 20:37:30,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:37:30,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521843922] [2023-11-28 20:37:30,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:37:30,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:37:30,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:37:30,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:37:30,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:37:30,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521843922] [2023-11-28 20:37:30,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521843922] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:37:30,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:37:30,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:37:30,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439554620] [2023-11-28 20:37:30,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:37:30,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:37:30,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:37:30,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:37:30,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:37:30,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2023-11-28 20:37:30,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 66 transitions, 360 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:37:30,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:37:30,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2023-11-28 20:37:30,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:37:30,278 INFO L124 PetriNetUnfolderBase]: 271/642 cut-off events. [2023-11-28 20:37:30,279 INFO L125 PetriNetUnfolderBase]: For 620/637 co-relation queries the response was YES. [2023-11-28 20:37:30,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1759 conditions, 642 events. 271/642 cut-off events. For 620/637 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 3045 event pairs, 96 based on Foata normal form. 23/644 useless extension candidates. Maximal degree in co-relation 1737. Up to 372 conditions per place. [2023-11-28 20:37:30,284 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 53 selfloop transitions, 11 changer transitions 3/82 dead transitions. [2023-11-28 20:37:30,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 82 transitions, 515 flow [2023-11-28 20:37:30,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 20:37:30,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-28 20:37:30,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 130 transitions. [2023-11-28 20:37:30,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6341463414634146 [2023-11-28 20:37:30,286 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 130 transitions. [2023-11-28 20:37:30,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 130 transitions. [2023-11-28 20:37:30,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:37:30,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 130 transitions. [2023-11-28 20:37:30,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:37:30,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 41.0) internal successors, (246), 6 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:37:30,288 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 41.0) internal successors, (246), 6 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:37:30,289 INFO L175 Difference]: Start difference. First operand has 61 places, 66 transitions, 360 flow. Second operand 5 states and 130 transitions. [2023-11-28 20:37:30,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 82 transitions, 515 flow [2023-11-28 20:37:30,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 82 transitions, 491 flow, removed 10 selfloop flow, removed 3 redundant places. [2023-11-28 20:37:30,296 INFO L231 Difference]: Finished difference. Result has 64 places, 61 transitions, 337 flow [2023-11-28 20:37:30,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=337, PETRI_PLACES=64, PETRI_TRANSITIONS=61} [2023-11-28 20:37:30,297 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 26 predicate places. [2023-11-28 20:37:30,297 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 61 transitions, 337 flow [2023-11-28 20:37:30,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:37:30,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:37:30,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:37:30,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-28 20:37:30,298 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-28 20:37:30,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:37:30,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1525666341, now seen corresponding path program 1 times [2023-11-28 20:37:30,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:37:30,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714150342] [2023-11-28 20:37:30,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:37:30,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:37:30,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:37:30,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:37:30,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:37:30,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714150342] [2023-11-28 20:37:30,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714150342] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:37:30,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:37:30,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:37:30,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924133598] [2023-11-28 20:37:30,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:37:30,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:37:30,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:37:30,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:37:30,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:37:30,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 41 [2023-11-28 20:37:30,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 61 transitions, 337 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:37:30,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:37:30,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 41 [2023-11-28 20:37:30,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:37:30,562 INFO L124 PetriNetUnfolderBase]: 409/890 cut-off events. [2023-11-28 20:37:30,562 INFO L125 PetriNetUnfolderBase]: For 1211/1277 co-relation queries the response was YES. [2023-11-28 20:37:30,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2528 conditions, 890 events. 409/890 cut-off events. For 1211/1277 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 4601 event pairs, 122 based on Foata normal form. 76/934 useless extension candidates. Maximal degree in co-relation 2502. Up to 570 conditions per place. [2023-11-28 20:37:30,569 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 84 selfloop transitions, 3 changer transitions 1/101 dead transitions. [2023-11-28 20:37:30,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 101 transitions, 701 flow [2023-11-28 20:37:30,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 20:37:30,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 20:37:30,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 111 transitions. [2023-11-28 20:37:30,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.676829268292683 [2023-11-28 20:37:30,570 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 111 transitions. [2023-11-28 20:37:30,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 111 transitions. [2023-11-28 20:37:30,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:37:30,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 111 transitions. [2023-11-28 20:37:30,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 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) [2023-11-28 20:37:30,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 41.0) internal successors, (205), 5 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:37:30,572 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 41.0) internal successors, (205), 5 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:37:30,572 INFO L175 Difference]: Start difference. First operand has 64 places, 61 transitions, 337 flow. Second operand 4 states and 111 transitions. [2023-11-28 20:37:30,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 101 transitions, 701 flow [2023-11-28 20:37:30,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 101 transitions, 693 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-11-28 20:37:30,578 INFO L231 Difference]: Finished difference. Result has 69 places, 63 transitions, 353 flow [2023-11-28 20:37:30,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=353, PETRI_PLACES=69, PETRI_TRANSITIONS=63} [2023-11-28 20:37:30,579 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 31 predicate places. [2023-11-28 20:37:30,579 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 63 transitions, 353 flow [2023-11-28 20:37:30,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:37:30,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:37:30,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:37:30,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-28 20:37:30,580 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-28 20:37:30,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:37:30,581 INFO L85 PathProgramCache]: Analyzing trace with hash -2006684672, now seen corresponding path program 1 times [2023-11-28 20:37:30,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:37:30,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257552701] [2023-11-28 20:37:30,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:37:30,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:37:30,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:37:30,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:37:30,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:37:30,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257552701] [2023-11-28 20:37:30,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257552701] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:37:30,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:37:30,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 20:37:30,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730785721] [2023-11-28 20:37:30,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:37:30,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 20:37:30,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:37:30,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 20:37:30,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:37:30,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 41 [2023-11-28 20:37:30,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 63 transitions, 353 flow. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:37:30,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:37:30,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 41 [2023-11-28 20:37:30,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:37:31,011 INFO L124 PetriNetUnfolderBase]: 367/866 cut-off events. [2023-11-28 20:37:31,012 INFO L125 PetriNetUnfolderBase]: For 1041/1055 co-relation queries the response was YES. [2023-11-28 20:37:31,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2549 conditions, 866 events. 367/866 cut-off events. For 1041/1055 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 4639 event pairs, 187 based on Foata normal form. 7/869 useless extension candidates. Maximal degree in co-relation 2520. Up to 609 conditions per place. [2023-11-28 20:37:31,019 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 55 selfloop transitions, 7 changer transitions 0/76 dead transitions. [2023-11-28 20:37:31,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 76 transitions, 538 flow [2023-11-28 20:37:31,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 20:37:31,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-28 20:37:31,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2023-11-28 20:37:31,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5707317073170731 [2023-11-28 20:37:31,021 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 117 transitions. [2023-11-28 20:37:31,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 117 transitions. [2023-11-28 20:37:31,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:37:31,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 117 transitions. [2023-11-28 20:37:31,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:37:31,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 41.0) internal successors, (246), 6 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:37:31,023 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 41.0) internal successors, (246), 6 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:37:31,023 INFO L175 Difference]: Start difference. First operand has 69 places, 63 transitions, 353 flow. Second operand 5 states and 117 transitions. [2023-11-28 20:37:31,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 76 transitions, 538 flow [2023-11-28 20:37:31,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 76 transitions, 527 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-28 20:37:31,030 INFO L231 Difference]: Finished difference. Result has 73 places, 64 transitions, 370 flow [2023-11-28 20:37:31,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=370, PETRI_PLACES=73, PETRI_TRANSITIONS=64} [2023-11-28 20:37:31,032 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 35 predicate places. [2023-11-28 20:37:31,032 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 64 transitions, 370 flow [2023-11-28 20:37:31,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:37:31,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:37:31,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:37:31,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-28 20:37:31,033 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-28 20:37:31,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:37:31,034 INFO L85 PathProgramCache]: Analyzing trace with hash 535396358, now seen corresponding path program 2 times [2023-11-28 20:37:31,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:37:31,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31702123] [2023-11-28 20:37:31,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:37:31,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:37:31,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:37:31,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:37:31,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:37:31,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31702123] [2023-11-28 20:37:31,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31702123] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:37:31,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:37:31,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 20:37:31,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975717554] [2023-11-28 20:37:31,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:37:31,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 20:37:31,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:37:31,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 20:37:31,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:37:31,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 41 [2023-11-28 20:37:31,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 64 transitions, 370 flow. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:37:31,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:37:31,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 41 [2023-11-28 20:37:31,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:37:31,401 INFO L124 PetriNetUnfolderBase]: 343/806 cut-off events. [2023-11-28 20:37:31,401 INFO L125 PetriNetUnfolderBase]: For 1112/1125 co-relation queries the response was YES. [2023-11-28 20:37:31,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2462 conditions, 806 events. 343/806 cut-off events. For 1112/1125 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 3990 event pairs, 134 based on Foata normal form. 24/827 useless extension candidates. Maximal degree in co-relation 2431. Up to 477 conditions per place. [2023-11-28 20:37:31,421 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 80 selfloop transitions, 14 changer transitions 3/111 dead transitions. [2023-11-28 20:37:31,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 111 transitions, 764 flow [2023-11-28 20:37:31,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-28 20:37:31,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-28 20:37:31,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2023-11-28 20:37:31,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5884146341463414 [2023-11-28 20:37:31,423 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 193 transitions. [2023-11-28 20:37:31,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 193 transitions. [2023-11-28 20:37:31,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:37:31,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 193 transitions. [2023-11-28 20:37:31,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 24.125) internal successors, (193), 8 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:37:31,425 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 41.0) internal successors, (369), 9 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:37:31,425 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 41.0) internal successors, (369), 9 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:37:31,426 INFO L175 Difference]: Start difference. First operand has 73 places, 64 transitions, 370 flow. Second operand 8 states and 193 transitions. [2023-11-28 20:37:31,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 111 transitions, 764 flow [2023-11-28 20:37:31,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 111 transitions, 750 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-28 20:37:31,434 INFO L231 Difference]: Finished difference. Result has 80 places, 65 transitions, 408 flow [2023-11-28 20:37:31,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=408, PETRI_PLACES=80, PETRI_TRANSITIONS=65} [2023-11-28 20:37:31,435 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 42 predicate places. [2023-11-28 20:37:31,435 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 65 transitions, 408 flow [2023-11-28 20:37:31,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:37:31,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:37:31,435 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:37:31,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-28 20:37:31,436 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-28 20:37:31,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:37:31,436 INFO L85 PathProgramCache]: Analyzing trace with hash 501328540, now seen corresponding path program 1 times [2023-11-28 20:37:31,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:37:31,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912046237] [2023-11-28 20:37:31,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:37:31,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:37:31,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:37:31,709 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:37:31,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:37:31,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912046237] [2023-11-28 20:37:31,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912046237] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:37:31,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868557608] [2023-11-28 20:37:31,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:37:31,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:37:31,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53e65ecc-7633-4e71-8657-8fad57b4674c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:37:31,713 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53e65ecc-7633-4e71-8657-8fad57b4674c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:37:31,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53e65ecc-7633-4e71-8657-8fad57b4674c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-28 20:37:31,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:37:31,813 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-28 20:37:31,819 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:37:31,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-28 20:37:32,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-11-28 20:37:32,124 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:37:32,125 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:37:32,234 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2023-11-28 20:37:32,313 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:37:32,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868557608] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:37:32,313 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 20:37:32,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 20 [2023-11-28 20:37:32,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019571206] [2023-11-28 20:37:32,314 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 20:37:32,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-28 20:37:32,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:37:32,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-28 20:37:32,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2023-11-28 20:37:32,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 41 [2023-11-28 20:37:32,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 65 transitions, 408 flow. Second operand has 21 states, 21 states have (on average 14.428571428571429) internal successors, (303), 21 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:37:32,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:37:32,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 41 [2023-11-28 20:37:32,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:37:33,495 INFO L124 PetriNetUnfolderBase]: 920/1996 cut-off events. [2023-11-28 20:37:33,495 INFO L125 PetriNetUnfolderBase]: For 4516/4704 co-relation queries the response was YES. [2023-11-28 20:37:33,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6446 conditions, 1996 events. 920/1996 cut-off events. For 4516/4704 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 10963 event pairs, 102 based on Foata normal form. 175/2161 useless extension candidates. Maximal degree in co-relation 6412. Up to 312 conditions per place. [2023-11-28 20:37:33,517 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 233 selfloop transitions, 78 changer transitions 0/325 dead transitions. [2023-11-28 20:37:33,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 325 transitions, 2625 flow [2023-11-28 20:37:33,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-28 20:37:33,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-28 20:37:33,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 424 transitions. [2023-11-28 20:37:33,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5745257452574526 [2023-11-28 20:37:33,520 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 424 transitions. [2023-11-28 20:37:33,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 424 transitions. [2023-11-28 20:37:33,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:37:33,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 424 transitions. [2023-11-28 20:37:33,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 23.555555555555557) internal successors, (424), 18 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:37:33,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 41.0) internal successors, (779), 19 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:37:33,526 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 41.0) internal successors, (779), 19 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:37:33,526 INFO L175 Difference]: Start difference. First operand has 80 places, 65 transitions, 408 flow. Second operand 18 states and 424 transitions. [2023-11-28 20:37:33,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 325 transitions, 2625 flow [2023-11-28 20:37:33,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 325 transitions, 2402 flow, removed 40 selfloop flow, removed 6 redundant places. [2023-11-28 20:37:33,547 INFO L231 Difference]: Finished difference. Result has 98 places, 130 transitions, 1053 flow [2023-11-28 20:37:33,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1053, PETRI_PLACES=98, PETRI_TRANSITIONS=130} [2023-11-28 20:37:33,548 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 60 predicate places. [2023-11-28 20:37:33,548 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 130 transitions, 1053 flow [2023-11-28 20:37:33,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 14.428571428571429) internal successors, (303), 21 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:37:33,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:37:33,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:37:33,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53e65ecc-7633-4e71-8657-8fad57b4674c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-28 20:37:33,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53e65ecc-7633-4e71-8657-8fad57b4674c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:37:33,754 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting workerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-28 20:37:33,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:37:33,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1226409655, now seen corresponding path program 1 times [2023-11-28 20:37:33,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:37:33,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292824192] [2023-11-28 20:37:33,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:37:33,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:37:33,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:37:34,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:37:34,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:37:34,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292824192] [2023-11-28 20:37:34,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292824192] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:37:34,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:37:34,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-28 20:37:34,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244453654] [2023-11-28 20:37:34,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:37:34,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-28 20:37:34,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:37:34,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-28 20:37:34,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-28 20:37:34,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2023-11-28 20:37:34,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 130 transitions, 1053 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 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) [2023-11-28 20:37:34,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:37:34,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2023-11-28 20:37:34,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:37:34,819 INFO L124 PetriNetUnfolderBase]: 1152/2498 cut-off events. [2023-11-28 20:37:34,819 INFO L125 PetriNetUnfolderBase]: For 6579/6757 co-relation queries the response was YES. [2023-11-28 20:37:34,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8875 conditions, 2498 events. 1152/2498 cut-off events. For 6579/6757 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 14858 event pairs, 433 based on Foata normal form. 109/2589 useless extension candidates. Maximal degree in co-relation 8835. Up to 1463 conditions per place. [2023-11-28 20:37:34,851 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 176 selfloop transitions, 41 changer transitions 0/230 dead transitions. [2023-11-28 20:37:34,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 230 transitions, 2173 flow [2023-11-28 20:37:34,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-28 20:37:34,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-28 20:37:34,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 209 transitions. [2023-11-28 20:37:34,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5097560975609756 [2023-11-28 20:37:34,854 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 209 transitions. [2023-11-28 20:37:34,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 209 transitions. [2023-11-28 20:37:34,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:37:34,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 209 transitions. [2023-11-28 20:37:34,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 20.9) internal successors, (209), 10 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:37:34,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 41.0) internal successors, (451), 11 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:37:34,858 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 41.0) internal successors, (451), 11 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:37:34,858 INFO L175 Difference]: Start difference. First operand has 98 places, 130 transitions, 1053 flow. Second operand 10 states and 209 transitions. [2023-11-28 20:37:34,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 230 transitions, 2173 flow [2023-11-28 20:37:34,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 230 transitions, 2010 flow, removed 66 selfloop flow, removed 7 redundant places. [2023-11-28 20:37:34,897 INFO L231 Difference]: Finished difference. Result has 107 places, 154 transitions, 1395 flow [2023-11-28 20:37:34,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=972, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1395, PETRI_PLACES=107, PETRI_TRANSITIONS=154} [2023-11-28 20:37:34,898 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 69 predicate places. [2023-11-28 20:37:34,898 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 154 transitions, 1395 flow [2023-11-28 20:37:34,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 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) [2023-11-28 20:37:34,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:37:34,899 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:37:34,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-28 20:37:34,900 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting workerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-28 20:37:34,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:37:34,900 INFO L85 PathProgramCache]: Analyzing trace with hash 403707897, now seen corresponding path program 2 times [2023-11-28 20:37:34,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:37:34,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341544083] [2023-11-28 20:37:34,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:37:34,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:37:34,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:37:35,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:37:35,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:37:35,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341544083] [2023-11-28 20:37:35,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341544083] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:37:35,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:37:35,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-28 20:37:35,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77399899] [2023-11-28 20:37:35,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:37:35,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-28 20:37:35,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:37:35,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-28 20:37:35,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-28 20:37:35,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2023-11-28 20:37:35,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 154 transitions, 1395 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:37:35,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:37:35,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2023-11-28 20:37:35,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:37:36,006 INFO L124 PetriNetUnfolderBase]: 1324/2872 cut-off events. [2023-11-28 20:37:36,006 INFO L125 PetriNetUnfolderBase]: For 10525/10755 co-relation queries the response was YES. [2023-11-28 20:37:36,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10513 conditions, 2872 events. 1324/2872 cut-off events. For 10525/10755 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 17813 event pairs, 482 based on Foata normal form. 154/3004 useless extension candidates. Maximal degree in co-relation 10469. Up to 1482 conditions per place. [2023-11-28 20:37:36,039 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 175 selfloop transitions, 64 changer transitions 0/252 dead transitions. [2023-11-28 20:37:36,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 252 transitions, 2530 flow [2023-11-28 20:37:36,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-28 20:37:36,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-28 20:37:36,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 230 transitions. [2023-11-28 20:37:36,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46747967479674796 [2023-11-28 20:37:36,041 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 230 transitions. [2023-11-28 20:37:36,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 230 transitions. [2023-11-28 20:37:36,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:37:36,042 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 230 transitions. [2023-11-28 20:37:36,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 19.166666666666668) internal successors, (230), 12 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:37:36,044 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 41.0) internal successors, (533), 13 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:37:36,044 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 41.0) internal successors, (533), 13 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:37:36,044 INFO L175 Difference]: Start difference. First operand has 107 places, 154 transitions, 1395 flow. Second operand 12 states and 230 transitions. [2023-11-28 20:37:36,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 252 transitions, 2530 flow [2023-11-28 20:37:36,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 252 transitions, 2525 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-28 20:37:36,085 INFO L231 Difference]: Finished difference. Result has 121 places, 178 transitions, 1940 flow [2023-11-28 20:37:36,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1392, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1940, PETRI_PLACES=121, PETRI_TRANSITIONS=178} [2023-11-28 20:37:36,086 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 83 predicate places. [2023-11-28 20:37:36,086 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 178 transitions, 1940 flow [2023-11-28 20:37:36,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:37:36,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:37:36,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:37:36,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-28 20:37:36,087 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting workerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-28 20:37:36,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:37:36,087 INFO L85 PathProgramCache]: Analyzing trace with hash -822097273, now seen corresponding path program 3 times [2023-11-28 20:37:36,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:37:36,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909090103] [2023-11-28 20:37:36,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:37:36,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:37:36,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:37:36,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:37:36,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:37:36,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909090103] [2023-11-28 20:37:36,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909090103] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:37:36,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:37:36,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-28 20:37:36,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707869432] [2023-11-28 20:37:36,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:37:36,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-28 20:37:36,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:37:36,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-28 20:37:36,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-28 20:37:36,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2023-11-28 20:37:36,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 178 transitions, 1940 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:37:36,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:37:36,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2023-11-28 20:37:36,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:37:37,353 INFO L124 PetriNetUnfolderBase]: 1739/3792 cut-off events. [2023-11-28 20:37:37,353 INFO L125 PetriNetUnfolderBase]: For 19465/19706 co-relation queries the response was YES. [2023-11-28 20:37:37,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14936 conditions, 3792 events. 1739/3792 cut-off events. For 19465/19706 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 25130 event pairs, 434 based on Foata normal form. 180/3949 useless extension candidates. Maximal degree in co-relation 14887. Up to 1384 conditions per place. [2023-11-28 20:37:37,393 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 220 selfloop transitions, 115 changer transitions 2/350 dead transitions. [2023-11-28 20:37:37,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 350 transitions, 3914 flow [2023-11-28 20:37:37,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-28 20:37:37,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-28 20:37:37,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 267 transitions. [2023-11-28 20:37:37,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.50093808630394 [2023-11-28 20:37:37,395 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 267 transitions. [2023-11-28 20:37:37,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 267 transitions. [2023-11-28 20:37:37,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:37:37,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 267 transitions. [2023-11-28 20:37:37,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 20.53846153846154) internal successors, (267), 13 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:37:37,398 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 41.0) internal successors, (574), 14 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:37:37,398 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 41.0) internal successors, (574), 14 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:37:37,399 INFO L175 Difference]: Start difference. First operand has 121 places, 178 transitions, 1940 flow. Second operand 13 states and 267 transitions. [2023-11-28 20:37:37,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 350 transitions, 3914 flow [2023-11-28 20:37:37,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 350 transitions, 3798 flow, removed 45 selfloop flow, removed 4 redundant places. [2023-11-28 20:37:37,467 INFO L231 Difference]: Finished difference. Result has 135 places, 230 transitions, 2998 flow [2023-11-28 20:37:37,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1872, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2998, PETRI_PLACES=135, PETRI_TRANSITIONS=230} [2023-11-28 20:37:37,468 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 97 predicate places. [2023-11-28 20:37:37,468 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 230 transitions, 2998 flow [2023-11-28 20:37:37,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:37:37,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:37:37,469 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:37:37,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-28 20:37:37,469 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-28 20:37:37,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:37:37,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1638684024, now seen corresponding path program 1 times [2023-11-28 20:37:37,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:37:37,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101022297] [2023-11-28 20:37:37,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:37:37,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:37:37,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:37:37,528 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-28 20:37:37,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:37:37,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101022297] [2023-11-28 20:37:37,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101022297] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:37:37,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:37:37,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:37:37,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360243015] [2023-11-28 20:37:37,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:37:37,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:37:37,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:37:37,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:37:37,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:37:37,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 41 [2023-11-28 20:37:37,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 230 transitions, 2998 flow. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:37:37,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:37:37,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 41 [2023-11-28 20:37:37,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:37:38,356 INFO L124 PetriNetUnfolderBase]: 1659/3683 cut-off events. [2023-11-28 20:37:38,356 INFO L125 PetriNetUnfolderBase]: For 24917/25213 co-relation queries the response was YES. [2023-11-28 20:37:38,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15639 conditions, 3683 events. 1659/3683 cut-off events. For 24917/25213 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 24699 event pairs, 556 based on Foata normal form. 298/3957 useless extension candidates. Maximal degree in co-relation 15585. Up to 2320 conditions per place. [2023-11-28 20:37:38,383 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 203 selfloop transitions, 107 changer transitions 0/326 dead transitions. [2023-11-28 20:37:38,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 326 transitions, 4807 flow [2023-11-28 20:37:38,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 20:37:38,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 20:37:38,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 105 transitions. [2023-11-28 20:37:38,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6402439024390244 [2023-11-28 20:37:38,384 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 105 transitions. [2023-11-28 20:37:38,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 105 transitions. [2023-11-28 20:37:38,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:37:38,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 105 transitions. [2023-11-28 20:37:38,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:37:38,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 41.0) internal successors, (205), 5 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:37:38,385 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 41.0) internal successors, (205), 5 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:37:38,386 INFO L175 Difference]: Start difference. First operand has 135 places, 230 transitions, 2998 flow. Second operand 4 states and 105 transitions. [2023-11-28 20:37:38,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 326 transitions, 4807 flow [2023-11-28 20:37:38,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 326 transitions, 4711 flow, removed 35 selfloop flow, removed 6 redundant places. [2023-11-28 20:37:38,459 INFO L231 Difference]: Finished difference. Result has 134 places, 249 transitions, 3723 flow [2023-11-28 20:37:38,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2867, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=3723, PETRI_PLACES=134, PETRI_TRANSITIONS=249} [2023-11-28 20:37:38,460 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 96 predicate places. [2023-11-28 20:37:38,460 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 249 transitions, 3723 flow [2023-11-28 20:37:38,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:37:38,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:37:38,461 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:37:38,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-28 20:37:38,461 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-28 20:37:38,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:37:38,462 INFO L85 PathProgramCache]: Analyzing trace with hash 740396585, now seen corresponding path program 1 times [2023-11-28 20:37:38,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:37:38,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993929195] [2023-11-28 20:37:38,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:37:38,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:37:38,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:37:38,573 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:37:38,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:37:38,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993929195] [2023-11-28 20:37:38,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993929195] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:37:38,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751781318] [2023-11-28 20:37:38,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:37:38,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:37:38,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53e65ecc-7633-4e71-8657-8fad57b4674c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:37:38,575 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53e65ecc-7633-4e71-8657-8fad57b4674c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:37:38,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53e65ecc-7633-4e71-8657-8fad57b4674c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-28 20:37:38,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:37:38,681 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 20:37:38,684 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:37:38,734 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:37:38,734 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:37:38,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1751781318] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:37:38,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:37:38,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-28 20:37:38,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629848992] [2023-11-28 20:37:38,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:37:38,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 20:37:38,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:37:38,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 20:37:38,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-28 20:37:38,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 41 [2023-11-28 20:37:38,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 249 transitions, 3723 flow. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:37:38,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:37:38,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 41 [2023-11-28 20:37:38,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:37:39,661 INFO L124 PetriNetUnfolderBase]: 1710/3635 cut-off events. [2023-11-28 20:37:39,661 INFO L125 PetriNetUnfolderBase]: For 29443/29729 co-relation queries the response was YES. [2023-11-28 20:37:39,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16866 conditions, 3635 events. 1710/3635 cut-off events. For 29443/29729 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 23316 event pairs, 271 based on Foata normal form. 275/3786 useless extension candidates. Maximal degree in co-relation 16810. Up to 2014 conditions per place. [2023-11-28 20:37:39,687 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 353 selfloop transitions, 9 changer transitions 23/402 dead transitions. [2023-11-28 20:37:39,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 402 transitions, 6261 flow [2023-11-28 20:37:39,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 20:37:39,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-28 20:37:39,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 156 transitions. [2023-11-28 20:37:39,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6341463414634146 [2023-11-28 20:37:39,689 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 156 transitions. [2023-11-28 20:37:39,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 156 transitions. [2023-11-28 20:37:39,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:37:39,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 156 transitions. [2023-11-28 20:37:39,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 26.0) internal successors, (156), 6 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) [2023-11-28 20:37:39,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 41.0) internal successors, (287), 7 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:37:39,691 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 41.0) internal successors, (287), 7 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:37:39,691 INFO L175 Difference]: Start difference. First operand has 134 places, 249 transitions, 3723 flow. Second operand 6 states and 156 transitions. [2023-11-28 20:37:39,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 402 transitions, 6261 flow [2023-11-28 20:37:39,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 402 transitions, 6249 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-11-28 20:37:39,774 INFO L231 Difference]: Finished difference. Result has 138 places, 248 transitions, 3725 flow [2023-11-28 20:37:39,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3707, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3725, PETRI_PLACES=138, PETRI_TRANSITIONS=248} [2023-11-28 20:37:39,775 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 100 predicate places. [2023-11-28 20:37:39,776 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 248 transitions, 3725 flow [2023-11-28 20:37:39,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:37:39,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:37:39,776 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:37:39,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53e65ecc-7633-4e71-8657-8fad57b4674c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-28 20:37:39,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53e65ecc-7633-4e71-8657-8fad57b4674c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-28 20:37:39,978 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-28 20:37:39,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:37:39,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1477458060, now seen corresponding path program 1 times [2023-11-28 20:37:39,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:37:39,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109860185] [2023-11-28 20:37:39,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:37:39,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:37:39,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:37:40,209 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:37:40,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:37:40,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109860185] [2023-11-28 20:37:40,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109860185] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:37:40,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450244351] [2023-11-28 20:37:40,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:37:40,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:37:40,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53e65ecc-7633-4e71-8657-8fad57b4674c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:37:40,212 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53e65ecc-7633-4e71-8657-8fad57b4674c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:37:40,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53e65ecc-7633-4e71-8657-8fad57b4674c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-28 20:37:40,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:37:40,318 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 20:37:40,320 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:37:40,382 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:37:40,382 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:37:40,491 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:37:40,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [450244351] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:37:40,492 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 20:37:40,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 17 [2023-11-28 20:37:40,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978837296] [2023-11-28 20:37:40,492 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 20:37:40,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-28 20:37:40,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:37:40,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-28 20:37:40,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2023-11-28 20:37:40,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2023-11-28 20:37:40,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 248 transitions, 3725 flow. Second operand has 17 states, 17 states have (on average 14.058823529411764) internal successors, (239), 17 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:37:40,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:37:40,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2023-11-28 20:37:40,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:37:42,908 INFO L124 PetriNetUnfolderBase]: 4312/8517 cut-off events. [2023-11-28 20:37:42,908 INFO L125 PetriNetUnfolderBase]: For 73102/74276 co-relation queries the response was YES. [2023-11-28 20:37:42,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40466 conditions, 8517 events. 4312/8517 cut-off events. For 73102/74276 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 57261 event pairs, 386 based on Foata normal form. 972/9452 useless extension candidates. Maximal degree in co-relation 40409. Up to 2404 conditions per place. [2023-11-28 20:37:42,983 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 819 selfloop transitions, 72 changer transitions 22/927 dead transitions. [2023-11-28 20:37:42,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 927 transitions, 13954 flow [2023-11-28 20:37:42,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-28 20:37:42,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-28 20:37:42,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 502 transitions. [2023-11-28 20:37:42,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5565410199556541 [2023-11-28 20:37:42,986 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 502 transitions. [2023-11-28 20:37:42,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 502 transitions. [2023-11-28 20:37:42,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:37:42,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 502 transitions. [2023-11-28 20:37:42,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 22.818181818181817) internal successors, (502), 22 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:37:42,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 41.0) internal successors, (943), 23 states have internal predecessors, (943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:37:42,992 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 41.0) internal successors, (943), 23 states have internal predecessors, (943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:37:42,992 INFO L175 Difference]: Start difference. First operand has 138 places, 248 transitions, 3725 flow. Second operand 22 states and 502 transitions. [2023-11-28 20:37:42,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 927 transitions, 13954 flow [2023-11-28 20:37:43,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 927 transitions, 13912 flow, removed 13 selfloop flow, removed 4 redundant places. [2023-11-28 20:37:43,215 INFO L231 Difference]: Finished difference. Result has 162 places, 274 transitions, 4164 flow [2023-11-28 20:37:43,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3708, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=4164, PETRI_PLACES=162, PETRI_TRANSITIONS=274} [2023-11-28 20:37:43,216 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 124 predicate places. [2023-11-28 20:37:43,216 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 274 transitions, 4164 flow [2023-11-28 20:37:43,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 14.058823529411764) internal successors, (239), 17 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:37:43,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:37:43,217 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:37:43,221 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53e65ecc-7633-4e71-8657-8fad57b4674c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-28 20:37:43,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53e65ecc-7633-4e71-8657-8fad57b4674c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-28 20:37:43,417 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-28 20:37:43,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:37:43,418 INFO L85 PathProgramCache]: Analyzing trace with hash 2005951855, now seen corresponding path program 1 times [2023-11-28 20:37:43,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:37:43,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975908307] [2023-11-28 20:37:43,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:37:43,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:37:43,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:37:44,029 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:37:44,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:37:44,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975908307] [2023-11-28 20:37:44,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975908307] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:37:44,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226498923] [2023-11-28 20:37:44,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:37:44,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:37:44,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53e65ecc-7633-4e71-8657-8fad57b4674c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:37:44,031 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53e65ecc-7633-4e71-8657-8fad57b4674c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:37:44,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53e65ecc-7633-4e71-8657-8fad57b4674c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-28 20:37:44,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:37:44,140 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-28 20:37:44,143 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:37:44,511 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-28 20:37:44,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-28 20:37:44,548 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:37:44,548 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:37:44,872 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2023-11-28 20:37:44,872 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 36 [2023-11-28 20:37:44,930 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:37:44,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226498923] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:37:44,930 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 20:37:44,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 27 [2023-11-28 20:37:44,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951408220] [2023-11-28 20:37:44,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 20:37:44,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-28 20:37:44,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:37:44,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-28 20:37:44,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=632, Unknown=0, NotChecked=0, Total=756 [2023-11-28 20:37:44,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2023-11-28 20:37:44,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 274 transitions, 4164 flow. Second operand has 28 states, 28 states have (on average 10.642857142857142) internal successors, (298), 28 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:37:44,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:37:44,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2023-11-28 20:37:44,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:37:55,628 INFO L124 PetriNetUnfolderBase]: 15289/29108 cut-off events. [2023-11-28 20:37:55,628 INFO L125 PetriNetUnfolderBase]: For 212150/212158 co-relation queries the response was YES. [2023-11-28 20:37:55,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138814 conditions, 29108 events. 15289/29108 cut-off events. For 212150/212158 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 235584 event pairs, 677 based on Foata normal form. 1034/30141 useless extension candidates. Maximal degree in co-relation 138750. Up to 4098 conditions per place. [2023-11-28 20:37:55,882 INFO L140 encePairwiseOnDemand]: 22/41 looper letters, 721 selfloop transitions, 1282 changer transitions 16/2025 dead transitions. [2023-11-28 20:37:55,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 2025 transitions, 25925 flow [2023-11-28 20:37:55,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2023-11-28 20:37:55,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2023-11-28 20:37:55,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 1618 transitions. [2023-11-28 20:37:55,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35235191637630664 [2023-11-28 20:37:55,889 INFO L72 ComplementDD]: Start complementDD. Operand 112 states and 1618 transitions. [2023-11-28 20:37:55,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 112 states and 1618 transitions. [2023-11-28 20:37:55,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:37:55,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 112 states and 1618 transitions. [2023-11-28 20:37:55,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 113 states, 112 states have (on average 14.446428571428571) internal successors, (1618), 112 states have internal predecessors, (1618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:37:55,905 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 113 states, 113 states have (on average 41.0) internal successors, (4633), 113 states have internal predecessors, (4633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:37:55,907 INFO L81 ComplementDD]: Finished complementDD. Result has 113 states, 113 states have (on average 41.0) internal successors, (4633), 113 states have internal predecessors, (4633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:37:55,907 INFO L175 Difference]: Start difference. First operand has 162 places, 274 transitions, 4164 flow. Second operand 112 states and 1618 transitions. [2023-11-28 20:37:55,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 2025 transitions, 25925 flow [2023-11-28 20:37:57,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 2025 transitions, 25265 flow, removed 45 selfloop flow, removed 9 redundant places. [2023-11-28 20:37:57,039 INFO L231 Difference]: Finished difference. Result has 319 places, 1503 transitions, 22907 flow [2023-11-28 20:37:57,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3933, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=230, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=112, PETRI_FLOW=22907, PETRI_PLACES=319, PETRI_TRANSITIONS=1503} [2023-11-28 20:37:57,040 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 281 predicate places. [2023-11-28 20:37:57,040 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 1503 transitions, 22907 flow [2023-11-28 20:37:57,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 10.642857142857142) internal successors, (298), 28 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:37:57,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:37:57,041 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:37:57,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53e65ecc-7633-4e71-8657-8fad57b4674c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-28 20:37:57,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53e65ecc-7633-4e71-8657-8fad57b4674c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:37:57,241 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-28 20:37:57,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:37:57,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1006228913, now seen corresponding path program 2 times [2023-11-28 20:37:57,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:37:57,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795621913] [2023-11-28 20:37:57,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:37:57,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:37:57,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:37:57,467 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:37:57,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:37:57,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795621913] [2023-11-28 20:37:57,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795621913] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:37:57,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:37:57,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-28 20:37:57,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046867036] [2023-11-28 20:37:57,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:37:57,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-28 20:37:57,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:37:57,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-28 20:37:57,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-28 20:37:57,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2023-11-28 20:37:57,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 1503 transitions, 22907 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:37:57,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:37:57,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2023-11-28 20:37:57,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:38:26,078 INFO L124 PetriNetUnfolderBase]: 31833/63149 cut-off events. [2023-11-28 20:38:26,078 INFO L125 PetriNetUnfolderBase]: For 1229815/1230111 co-relation queries the response was YES. [2023-11-28 20:38:26,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 427358 conditions, 63149 events. 31833/63149 cut-off events. For 1229815/1230111 co-relation queries the response was YES. Maximal size of possible extension queue 1267. Compared 600219 event pairs, 2879 based on Foata normal form. 582/63610 useless extension candidates. Maximal degree in co-relation 427241. Up to 17266 conditions per place. [2023-11-28 20:38:27,091 INFO L140 encePairwiseOnDemand]: 24/41 looper letters, 1911 selfloop transitions, 2816 changer transitions 0/4757 dead transitions. [2023-11-28 20:38:27,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 4757 transitions, 84742 flow [2023-11-28 20:38:27,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-28 20:38:27,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-11-28 20:38:27,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 539 transitions. [2023-11-28 20:38:27,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4695121951219512 [2023-11-28 20:38:27,094 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 539 transitions. [2023-11-28 20:38:27,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 539 transitions. [2023-11-28 20:38:27,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:38:27,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 539 transitions. [2023-11-28 20:38:27,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 19.25) internal successors, (539), 28 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:38:27,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 41.0) internal successors, (1189), 29 states have internal predecessors, (1189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:38:27,099 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 41.0) internal successors, (1189), 29 states have internal predecessors, (1189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:38:27,099 INFO L175 Difference]: Start difference. First operand has 319 places, 1503 transitions, 22907 flow. Second operand 28 states and 539 transitions. [2023-11-28 20:38:27,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 4757 transitions, 84742 flow [2023-11-28 20:38:46,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 4757 transitions, 80185 flow, removed 1691 selfloop flow, removed 10 redundant places. [2023-11-28 20:38:46,751 INFO L231 Difference]: Finished difference. Result has 360 places, 4283 transitions, 78170 flow [2023-11-28 20:38:46,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=21353, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=821, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=78170, PETRI_PLACES=360, PETRI_TRANSITIONS=4283} [2023-11-28 20:38:46,753 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 322 predicate places. [2023-11-28 20:38:46,753 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 4283 transitions, 78170 flow [2023-11-28 20:38:46,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:38:46,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:38:46,753 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:38:46,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-28 20:38:46,753 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-28 20:38:46,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:38:46,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1304751191, now seen corresponding path program 3 times [2023-11-28 20:38:46,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:38:46,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770221241] [2023-11-28 20:38:46,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:46,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:38:46,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:47,026 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:38:47,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:38:47,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770221241] [2023-11-28 20:38:47,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770221241] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:38:47,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:38:47,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-28 20:38:47,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827592281] [2023-11-28 20:38:47,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:38:47,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-28 20:38:47,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:38:47,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-28 20:38:47,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-11-28 20:38:47,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2023-11-28 20:38:47,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 4283 transitions, 78170 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:38:47,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:38:47,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2023-11-28 20:38:47,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:40:12,455 INFO L124 PetriNetUnfolderBase]: 45402/89768 cut-off events. [2023-11-28 20:40:12,455 INFO L125 PetriNetUnfolderBase]: For 2331980/2332624 co-relation queries the response was YES. [2023-11-28 20:40:13,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 680057 conditions, 89768 events. 45402/89768 cut-off events. For 2331980/2332624 co-relation queries the response was YES. Maximal size of possible extension queue 1743. Compared 893947 event pairs, 6422 based on Foata normal form. 565/90023 useless extension candidates. Maximal degree in co-relation 679923. Up to 42850 conditions per place. [2023-11-28 20:40:14,221 INFO L140 encePairwiseOnDemand]: 25/41 looper letters, 3458 selfloop transitions, 3523 changer transitions 0/7011 dead transitions. [2023-11-28 20:40:14,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 7011 transitions, 141506 flow [2023-11-28 20:40:14,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-28 20:40:14,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-28 20:40:14,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 460 transitions. [2023-11-28 20:40:14,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46747967479674796 [2023-11-28 20:40:14,223 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 460 transitions. [2023-11-28 20:40:14,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 460 transitions. [2023-11-28 20:40:14,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:40:14,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 460 transitions. [2023-11-28 20:40:14,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 19.166666666666668) internal successors, (460), 24 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:40:14,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 41.0) internal successors, (1025), 25 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:40:14,227 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 41.0) internal successors, (1025), 25 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:40:14,227 INFO L175 Difference]: Start difference. First operand has 360 places, 4283 transitions, 78170 flow. Second operand 24 states and 460 transitions. [2023-11-28 20:40:14,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 7011 transitions, 141506 flow [2023-11-28 20:41:17,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 7011 transitions, 140614 flow, removed 446 selfloop flow, removed 0 redundant places. [2023-11-28 20:41:17,407 INFO L231 Difference]: Finished difference. Result has 405 places, 6734 transitions, 138895 flow [2023-11-28 20:41:17,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=77586, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1438, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1925, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=138895, PETRI_PLACES=405, PETRI_TRANSITIONS=6734} [2023-11-28 20:41:17,412 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 367 predicate places. [2023-11-28 20:41:17,412 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 6734 transitions, 138895 flow [2023-11-28 20:41:17,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:41:17,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:41:17,412 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:41:17,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-28 20:41:17,413 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-28 20:41:17,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:41:17,413 INFO L85 PathProgramCache]: Analyzing trace with hash 388050970, now seen corresponding path program 1 times [2023-11-28 20:41:17,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:41:17,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464758749] [2023-11-28 20:41:17,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:41:17,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:41:17,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:17,645 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-28 20:41:17,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:41:17,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464758749] [2023-11-28 20:41:17,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464758749] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:41:17,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:41:17,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-28 20:41:17,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984243816] [2023-11-28 20:41:17,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:41:17,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-28 20:41:17,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:41:17,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-28 20:41:17,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-11-28 20:41:17,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2023-11-28 20:41:17,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 6734 transitions, 138895 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:41:17,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:41:17,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2023-11-28 20:41:17,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 20:44:56,248 INFO L124 PetriNetUnfolderBase]: 59454/117909 cut-off events. [2023-11-28 20:44:56,248 INFO L125 PetriNetUnfolderBase]: For 3650999/3651419 co-relation queries the response was YES. [2023-11-28 20:44:58,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 976042 conditions, 117909 events. 59454/117909 cut-off events. For 3650999/3651419 co-relation queries the response was YES. Maximal size of possible extension queue 2467. Compared 1226936 event pairs, 9126 based on Foata normal form. 806/118368 useless extension candidates. Maximal degree in co-relation 975886. Up to 63039 conditions per place. [2023-11-28 20:44:59,300 INFO L140 encePairwiseOnDemand]: 25/41 looper letters, 4092 selfloop transitions, 5866 changer transitions 0/9988 dead transitions. [2023-11-28 20:44:59,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 9988 transitions, 220847 flow [2023-11-28 20:44:59,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-28 20:44:59,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-28 20:44:59,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 370 transitions. [2023-11-28 20:44:59,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4749679075738126 [2023-11-28 20:44:59,303 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 370 transitions. [2023-11-28 20:44:59,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 370 transitions. [2023-11-28 20:44:59,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 20:44:59,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 370 transitions. [2023-11-28 20:44:59,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 19.473684210526315) internal successors, (370), 19 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:44:59,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 41.0) internal successors, (820), 20 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:44:59,306 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 41.0) internal successors, (820), 20 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:44:59,306 INFO L175 Difference]: Start difference. First operand has 405 places, 6734 transitions, 138895 flow. Second operand 19 states and 370 transitions. [2023-11-28 20:44:59,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 9988 transitions, 220847 flow [2023-11-28 20:47:23,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 9988 transitions, 217903 flow, removed 981 selfloop flow, removed 1 redundant places. [2023-11-28 20:47:23,814 INFO L231 Difference]: Finished difference. Result has 439 places, 9532 transitions, 214904 flow [2023-11-28 20:47:23,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=136944, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6734, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2912, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=214904, PETRI_PLACES=439, PETRI_TRANSITIONS=9532} [2023-11-28 20:47:23,819 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 401 predicate places. [2023-11-28 20:47:23,819 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 9532 transitions, 214904 flow [2023-11-28 20:47:23,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:47:23,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 20:47:23,819 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:47:23,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-28 20:47:23,819 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-28 20:47:23,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:47:23,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1661154918, now seen corresponding path program 2 times [2023-11-28 20:47:23,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:47:23,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21009920] [2023-11-28 20:47:23,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:47:23,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:47:23,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:47:24,044 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:47:24,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:47:24,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21009920] [2023-11-28 20:47:24,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21009920] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:47:24,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:47:24,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-28 20:47:24,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277740955] [2023-11-28 20:47:24,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:47:24,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-28 20:47:24,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:47:24,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-28 20:47:24,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-28 20:47:24,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2023-11-28 20:47:24,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 9532 transitions, 214904 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:47:24,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 20:47:24,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2023-11-28 20:47:24,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand