./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-node-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cf1a7837 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_bd2a213a-2cd9-4020-8a28-65e36259f90e/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2a213a-2cd9-4020-8a28-65e36259f90e/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2a213a-2cd9-4020-8a28-65e36259f90e/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2a213a-2cd9-4020-8a28-65e36259f90e/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-node-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2a213a-2cd9-4020-8a28-65e36259f90e/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2a213a-2cd9-4020-8a28-65e36259f90e/bin/uautomizer-verify-uTZkv6EMXl --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 9db11e263e78e3a6bd75c2a0c3dda64920ec857df2fbb1d0b7b1072a48f36a31 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:19:59,450 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:19:59,555 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2a213a-2cd9-4020-8a28-65e36259f90e/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-12 02:19:59,562 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:19:59,563 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:19:59,594 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:19:59,595 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:19:59,596 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:19:59,597 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:19:59,598 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:19:59,599 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:19:59,600 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:19:59,600 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:19:59,601 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:19:59,602 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:19:59,603 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:19:59,603 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:19:59,604 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:19:59,605 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:19:59,606 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:19:59,606 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:19:59,607 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:19:59,608 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-12 02:19:59,609 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:19:59,609 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:19:59,610 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:19:59,611 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:19:59,612 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:19:59,612 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:19:59,613 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:19:59,614 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:19:59,614 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:19:59,615 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:19:59,616 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:19:59,616 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:19:59,617 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:19:59,617 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:19:59,618 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:19:59,619 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:19:59,619 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:19:59,619 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:19:59,620 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_bd2a213a-2cd9-4020-8a28-65e36259f90e/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2a213a-2cd9-4020-8a28-65e36259f90e/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9db11e263e78e3a6bd75c2a0c3dda64920ec857df2fbb1d0b7b1072a48f36a31 [2023-11-12 02:20:00,034 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:20:00,076 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:20:00,080 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:20:00,082 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:20:00,082 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:20:00,084 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2a213a-2cd9-4020-8a28-65e36259f90e/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/weaver/chl-node-symm.wvr.c [2023-11-12 02:20:03,736 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:20:03,979 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:20:03,980 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2a213a-2cd9-4020-8a28-65e36259f90e/sv-benchmarks/c/weaver/chl-node-symm.wvr.c [2023-11-12 02:20:03,991 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2a213a-2cd9-4020-8a28-65e36259f90e/bin/uautomizer-verify-uTZkv6EMXl/data/321c218d8/b2c11aa707d64e02a96966f93e124b71/FLAG7ba9af567 [2023-11-12 02:20:04,009 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2a213a-2cd9-4020-8a28-65e36259f90e/bin/uautomizer-verify-uTZkv6EMXl/data/321c218d8/b2c11aa707d64e02a96966f93e124b71 [2023-11-12 02:20:04,013 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:20:04,015 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:20:04,017 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:20:04,017 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:20:04,023 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:20:04,024 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:20:04" (1/1) ... [2023-11-12 02:20:04,026 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a9157e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:04, skipping insertion in model container [2023-11-12 02:20:04,026 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:20:04" (1/1) ... [2023-11-12 02:20:04,073 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:20:04,357 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:20:04,374 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:20:04,416 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:20:04,444 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:20:04,445 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:04 WrapperNode [2023-11-12 02:20:04,446 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:20:04,450 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:20:04,451 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:20:04,451 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:20:04,461 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:04" (1/1) ... [2023-11-12 02:20:04,490 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:04" (1/1) ... [2023-11-12 02:20:04,533 INFO L138 Inliner]: procedures = 26, calls = 51, calls flagged for inlining = 19, calls inlined = 25, statements flattened = 347 [2023-11-12 02:20:04,533 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:20:04,534 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:20:04,534 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:20:04,534 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:20:04,548 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:04" (1/1) ... [2023-11-12 02:20:04,548 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:04" (1/1) ... [2023-11-12 02:20:04,554 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:04" (1/1) ... [2023-11-12 02:20:04,555 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:04" (1/1) ... [2023-11-12 02:20:04,578 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:04" (1/1) ... [2023-11-12 02:20:04,595 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:04" (1/1) ... [2023-11-12 02:20:04,598 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:04" (1/1) ... [2023-11-12 02:20:04,601 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:04" (1/1) ... [2023-11-12 02:20:04,606 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:20:04,607 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:20:04,607 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:20:04,608 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:20:04,617 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:04" (1/1) ... [2023-11-12 02:20:04,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:20:04,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2a213a-2cd9-4020-8a28-65e36259f90e/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:20:04,664 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2a213a-2cd9-4020-8a28-65e36259f90e/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:20:04,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2a213a-2cd9-4020-8a28-65e36259f90e/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:20:04,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:20:04,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:20:04,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:20:04,712 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:20:04,712 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-12 02:20:04,712 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-12 02:20:04,713 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-12 02:20:04,715 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-12 02:20:04,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:20:04,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 02:20:04,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:20:04,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:20:04,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:20:04,719 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:20:04,898 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:20:04,900 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:20:05,665 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:20:05,694 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:20:05,695 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-12 02:20:05,700 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:20:05 BoogieIcfgContainer [2023-11-12 02:20:05,700 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:20:05,704 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:20:05,704 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:20:05,710 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:20:05,711 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:20:04" (1/3) ... [2023-11-12 02:20:05,712 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@249e06b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:20:05, skipping insertion in model container [2023-11-12 02:20:05,713 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:04" (2/3) ... [2023-11-12 02:20:05,715 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@249e06b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:20:05, skipping insertion in model container [2023-11-12 02:20:05,715 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:20:05" (3/3) ... [2023-11-12 02:20:05,717 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-symm.wvr.c [2023-11-12 02:20:05,727 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:20:05,737 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:20:05,737 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2023-11-12 02:20:05,738 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:20:05,927 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-12 02:20:06,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 445 places, 470 transitions, 954 flow [2023-11-12 02:20:06,248 INFO L124 PetriNetUnfolderBase]: 32/468 cut-off events. [2023-11-12 02:20:06,248 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 02:20:06,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 477 conditions, 468 events. 32/468 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 598 event pairs, 0 based on Foata normal form. 0/406 useless extension candidates. Maximal degree in co-relation 360. Up to 2 conditions per place. [2023-11-12 02:20:06,261 INFO L82 GeneralOperation]: Start removeDead. Operand has 445 places, 470 transitions, 954 flow [2023-11-12 02:20:06,278 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 423 places, 447 transitions, 906 flow [2023-11-12 02:20:06,283 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:20:06,305 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 423 places, 447 transitions, 906 flow [2023-11-12 02:20:06,311 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 423 places, 447 transitions, 906 flow [2023-11-12 02:20:06,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 423 places, 447 transitions, 906 flow [2023-11-12 02:20:06,547 INFO L124 PetriNetUnfolderBase]: 31/447 cut-off events. [2023-11-12 02:20:06,547 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 02:20:06,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 456 conditions, 447 events. 31/447 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 595 event pairs, 0 based on Foata normal form. 0/387 useless extension candidates. Maximal degree in co-relation 360. Up to 2 conditions per place. [2023-11-12 02:20:06,561 INFO L119 LiptonReduction]: Number of co-enabled transitions 14168 [2023-11-12 02:20:38,772 INFO L134 LiptonReduction]: Checked pairs total: 16265 [2023-11-12 02:20:38,773 INFO L136 LiptonReduction]: Total number of compositions: 583 [2023-11-12 02:20:38,802 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:20:38,814 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;@4d89eb3c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:20:38,815 INFO L358 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2023-11-12 02:20:38,816 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:20:38,817 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-12 02:20:38,817 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:20:38,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:38,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-12 02:20:38,818 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-12 02:20:38,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:38,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1848, now seen corresponding path program 1 times [2023-11-12 02:20:38,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:38,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826424278] [2023-11-12 02:20:38,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:38,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:38,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:38,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:20:38,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:38,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826424278] [2023-11-12 02:20:38,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826424278] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:20:38,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:20:38,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-12 02:20:38,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410168820] [2023-11-12 02:20:38,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:20:38,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:20:38,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:38,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:20:38,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:20:38,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 443 out of 1053 [2023-11-12 02:20:38,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 54 transitions, 120 flow. Second operand has 2 states, 2 states have (on average 443.5) internal successors, (887), 2 states have internal predecessors, (887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:38,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:20:38,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 443 of 1053 [2023-11-12 02:20:38,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:20:39,229 INFO L124 PetriNetUnfolderBase]: 213/399 cut-off events. [2023-11-12 02:20:39,229 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-12 02:20:39,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 833 conditions, 399 events. 213/399 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1556 event pairs, 195 based on Foata normal form. 1/216 useless extension candidates. Maximal degree in co-relation 726. Up to 400 conditions per place. [2023-11-12 02:20:39,236 INFO L140 encePairwiseOnDemand]: 1045/1053 looper letters, 45 selfloop transitions, 0 changer transitions 1/46 dead transitions. [2023-11-12 02:20:39,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 46 transitions, 196 flow [2023-11-12 02:20:39,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:20:39,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-12 02:20:39,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 940 transitions. [2023-11-12 02:20:39,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44634377967711303 [2023-11-12 02:20:39,264 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 940 transitions. [2023-11-12 02:20:39,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 940 transitions. [2023-11-12 02:20:39,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:20:39,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 940 transitions. [2023-11-12 02:20:39,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 470.0) internal successors, (940), 2 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:39,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 1053.0) internal successors, (3159), 3 states have internal predecessors, (3159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:39,295 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 1053.0) internal successors, (3159), 3 states have internal predecessors, (3159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:39,297 INFO L175 Difference]: Start difference. First operand has 56 places, 54 transitions, 120 flow. Second operand 2 states and 940 transitions. [2023-11-12 02:20:39,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 46 transitions, 196 flow [2023-11-12 02:20:39,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 46 transitions, 188 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-12 02:20:39,306 INFO L231 Difference]: Finished difference. Result has 45 places, 45 transitions, 93 flow [2023-11-12 02:20:39,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1053, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=93, PETRI_PLACES=45, PETRI_TRANSITIONS=45} [2023-11-12 02:20:39,315 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -11 predicate places. [2023-11-12 02:20:39,315 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 45 transitions, 93 flow [2023-11-12 02:20:39,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 443.5) internal successors, (887), 2 states have internal predecessors, (887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:39,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:39,317 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-12 02:20:39,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:20:39,317 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-12 02:20:39,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:39,328 INFO L85 PathProgramCache]: Analyzing trace with hash 58961, now seen corresponding path program 1 times [2023-11-12 02:20:39,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:39,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035761132] [2023-11-12 02:20:39,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:39,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:39,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:39,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:20:39,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:39,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035761132] [2023-11-12 02:20:39,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035761132] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:20:39,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:20:39,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:20:39,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306208097] [2023-11-12 02:20:39,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:20:39,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:20:39,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:39,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:20:39,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:20:39,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 437 out of 1053 [2023-11-12 02:20:39,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 45 transitions, 93 flow. Second operand has 3 states, 3 states have (on average 437.6666666666667) internal successors, (1313), 3 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:39,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:20:39,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 437 of 1053 [2023-11-12 02:20:39,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:20:39,795 INFO L124 PetriNetUnfolderBase]: 213/396 cut-off events. [2023-11-12 02:20:39,795 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:20:39,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 807 conditions, 396 events. 213/396 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1543 event pairs, 195 based on Foata normal form. 0/214 useless extension candidates. Maximal degree in co-relation 804. Up to 396 conditions per place. [2023-11-12 02:20:39,798 INFO L140 encePairwiseOnDemand]: 1050/1053 looper letters, 42 selfloop transitions, 1 changer transitions 0/43 dead transitions. [2023-11-12 02:20:39,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 43 transitions, 175 flow [2023-11-12 02:20:39,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:20:39,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:20:39,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1356 transitions. [2023-11-12 02:20:39,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42924976258309594 [2023-11-12 02:20:39,806 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1356 transitions. [2023-11-12 02:20:39,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1356 transitions. [2023-11-12 02:20:39,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:20:39,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1356 transitions. [2023-11-12 02:20:39,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 452.0) internal successors, (1356), 3 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:39,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1053.0) internal successors, (4212), 4 states have internal predecessors, (4212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:39,824 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1053.0) internal successors, (4212), 4 states have internal predecessors, (4212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:39,824 INFO L175 Difference]: Start difference. First operand has 45 places, 45 transitions, 93 flow. Second operand 3 states and 1356 transitions. [2023-11-12 02:20:39,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 43 transitions, 175 flow [2023-11-12 02:20:39,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 43 transitions, 175 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:20:39,826 INFO L231 Difference]: Finished difference. Result has 44 places, 43 transitions, 91 flow [2023-11-12 02:20:39,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1053, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=91, PETRI_PLACES=44, PETRI_TRANSITIONS=43} [2023-11-12 02:20:39,828 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -12 predicate places. [2023-11-12 02:20:39,828 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 43 transitions, 91 flow [2023-11-12 02:20:39,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 437.6666666666667) internal successors, (1313), 3 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:39,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:39,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-12 02:20:39,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:20:39,830 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-12 02:20:39,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:39,831 INFO L85 PathProgramCache]: Analyzing trace with hash 58960, now seen corresponding path program 1 times [2023-11-12 02:20:39,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:39,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806134602] [2023-11-12 02:20:39,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:39,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:39,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:39,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:20:39,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:39,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806134602] [2023-11-12 02:20:39,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806134602] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:20:39,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:20:39,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:20:39,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068977737] [2023-11-12 02:20:39,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:20:39,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:20:39,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:39,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:20:39,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:20:39,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 1053 [2023-11-12 02:20:39,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 43 transitions, 91 flow. Second operand has 3 states, 3 states have (on average 435.6666666666667) internal successors, (1307), 3 states have internal predecessors, (1307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:39,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:20:39,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 1053 [2023-11-12 02:20:39,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:20:40,140 INFO L124 PetriNetUnfolderBase]: 213/394 cut-off events. [2023-11-12 02:20:40,141 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:20:40,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 805 conditions, 394 events. 213/394 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1533 event pairs, 195 based on Foata normal form. 0/214 useless extension candidates. Maximal degree in co-relation 801. Up to 394 conditions per place. [2023-11-12 02:20:40,144 INFO L140 encePairwiseOnDemand]: 1050/1053 looper letters, 40 selfloop transitions, 1 changer transitions 0/41 dead transitions. [2023-11-12 02:20:40,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 41 transitions, 169 flow [2023-11-12 02:20:40,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:20:40,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:20:40,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1348 transitions. [2023-11-12 02:20:40,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4267173156062045 [2023-11-12 02:20:40,151 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1348 transitions. [2023-11-12 02:20:40,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1348 transitions. [2023-11-12 02:20:40,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:20:40,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1348 transitions. [2023-11-12 02:20:40,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 449.3333333333333) internal successors, (1348), 3 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:40,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1053.0) internal successors, (4212), 4 states have internal predecessors, (4212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:40,168 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1053.0) internal successors, (4212), 4 states have internal predecessors, (4212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:40,168 INFO L175 Difference]: Start difference. First operand has 44 places, 43 transitions, 91 flow. Second operand 3 states and 1348 transitions. [2023-11-12 02:20:40,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 41 transitions, 169 flow [2023-11-12 02:20:40,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 41 transitions, 168 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:20:40,170 INFO L231 Difference]: Finished difference. Result has 43 places, 41 transitions, 88 flow [2023-11-12 02:20:40,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1053, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=43, PETRI_TRANSITIONS=41} [2023-11-12 02:20:40,171 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -13 predicate places. [2023-11-12 02:20:40,171 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 41 transitions, 88 flow [2023-11-12 02:20:40,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 435.6666666666667) internal successors, (1307), 3 states have internal predecessors, (1307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:40,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:40,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-12 02:20:40,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:20:40,174 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-12 02:20:40,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:40,174 INFO L85 PathProgramCache]: Analyzing trace with hash 58978, now seen corresponding path program 1 times [2023-11-12 02:20:40,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:40,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384959231] [2023-11-12 02:20:40,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:40,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:40,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:40,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:20:40,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:40,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384959231] [2023-11-12 02:20:40,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384959231] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:20:40,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:20:40,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:20:40,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493243031] [2023-11-12 02:20:40,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:20:40,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:20:40,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:40,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:20:40,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:20:40,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 433 out of 1053 [2023-11-12 02:20:40,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 41 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 433.6666666666667) internal successors, (1301), 3 states have internal predecessors, (1301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:40,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:20:40,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 433 of 1053 [2023-11-12 02:20:40,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:20:40,459 INFO L124 PetriNetUnfolderBase]: 217/400 cut-off events. [2023-11-12 02:20:40,459 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:20:40,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 818 conditions, 400 events. 217/400 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1540 event pairs, 195 based on Foata normal form. 0/216 useless extension candidates. Maximal degree in co-relation 814. Up to 398 conditions per place. [2023-11-12 02:20:40,462 INFO L140 encePairwiseOnDemand]: 1042/1053 looper letters, 40 selfloop transitions, 7 changer transitions 0/47 dead transitions. [2023-11-12 02:20:40,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 47 transitions, 194 flow [2023-11-12 02:20:40,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:20:40,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:20:40,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1350 transitions. [2023-11-12 02:20:40,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42735042735042733 [2023-11-12 02:20:40,469 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1350 transitions. [2023-11-12 02:20:40,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1350 transitions. [2023-11-12 02:20:40,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:20:40,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1350 transitions. [2023-11-12 02:20:40,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 450.0) internal successors, (1350), 3 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:40,482 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1053.0) internal successors, (4212), 4 states have internal predecessors, (4212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:40,485 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1053.0) internal successors, (4212), 4 states have internal predecessors, (4212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:40,486 INFO L175 Difference]: Start difference. First operand has 43 places, 41 transitions, 88 flow. Second operand 3 states and 1350 transitions. [2023-11-12 02:20:40,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 47 transitions, 194 flow [2023-11-12 02:20:40,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 47 transitions, 193 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:20:40,488 INFO L231 Difference]: Finished difference. Result has 46 places, 47 transitions, 147 flow [2023-11-12 02:20:40,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1053, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=147, PETRI_PLACES=46, PETRI_TRANSITIONS=47} [2023-11-12 02:20:40,489 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -10 predicate places. [2023-11-12 02:20:40,490 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 47 transitions, 147 flow [2023-11-12 02:20:40,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 433.6666666666667) internal successors, (1301), 3 states have internal predecessors, (1301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:40,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:40,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:20:40,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:20:40,492 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-12 02:20:40,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:40,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1830070, now seen corresponding path program 1 times [2023-11-12 02:20:40,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:40,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897956080] [2023-11-12 02:20:40,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:40,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:40,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:40,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:20:40,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:40,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897956080] [2023-11-12 02:20:40,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897956080] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:20:40,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859810458] [2023-11-12 02:20:40,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:40,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:20:40,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2a213a-2cd9-4020-8a28-65e36259f90e/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:20:40,603 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2a213a-2cd9-4020-8a28-65e36259f90e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:20:40,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2a213a-2cd9-4020-8a28-65e36259f90e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:20:40,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:40,759 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:20:40,763 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:20:40,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:20:40,800 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:20:40,829 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:20:40,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [859810458] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:20:40,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:20:40,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-12 02:20:40,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800780118] [2023-11-12 02:20:40,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:20:40,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:20:40,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:40,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:20:40,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:20:40,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 433 out of 1053 [2023-11-12 02:20:40,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 47 transitions, 147 flow. Second operand has 7 states, 7 states have (on average 434.14285714285717) internal successors, (3039), 7 states have internal predecessors, (3039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:40,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:20:40,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 433 of 1053 [2023-11-12 02:20:40,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:20:41,239 INFO L124 PetriNetUnfolderBase]: 235/424 cut-off events. [2023-11-12 02:20:41,239 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:20:41,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 918 conditions, 424 events. 235/424 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1592 event pairs, 195 based on Foata normal form. 0/227 useless extension candidates. Maximal degree in co-relation 913. Up to 405 conditions per place. [2023-11-12 02:20:41,243 INFO L140 encePairwiseOnDemand]: 1042/1053 looper letters, 38 selfloop transitions, 33 changer transitions 0/71 dead transitions. [2023-11-12 02:20:41,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 71 transitions, 391 flow [2023-11-12 02:20:41,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:20:41,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:20:41,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3108 transitions. [2023-11-12 02:20:41,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42165242165242167 [2023-11-12 02:20:41,258 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3108 transitions. [2023-11-12 02:20:41,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3108 transitions. [2023-11-12 02:20:41,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:20:41,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3108 transitions. [2023-11-12 02:20:41,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 444.0) internal successors, (3108), 7 states have internal predecessors, (3108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:41,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1053.0) internal successors, (8424), 8 states have internal predecessors, (8424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:41,293 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1053.0) internal successors, (8424), 8 states have internal predecessors, (8424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:41,293 INFO L175 Difference]: Start difference. First operand has 46 places, 47 transitions, 147 flow. Second operand 7 states and 3108 transitions. [2023-11-12 02:20:41,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 71 transitions, 391 flow [2023-11-12 02:20:41,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 71 transitions, 371 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:20:41,300 INFO L231 Difference]: Finished difference. Result has 53 places, 71 transitions, 347 flow [2023-11-12 02:20:41,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1053, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=347, PETRI_PLACES=53, PETRI_TRANSITIONS=71} [2023-11-12 02:20:41,304 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -3 predicate places. [2023-11-12 02:20:41,304 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 71 transitions, 347 flow [2023-11-12 02:20:41,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 434.14285714285717) internal successors, (3039), 7 states have internal predecessors, (3039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:41,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:41,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-12 02:20:41,318 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2a213a-2cd9-4020-8a28-65e36259f90e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 02:20:41,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2a213a-2cd9-4020-8a28-65e36259f90e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:20:41,513 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-12 02:20:41,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:41,514 INFO L85 PathProgramCache]: Analyzing trace with hash 56811563, now seen corresponding path program 1 times [2023-11-12 02:20:41,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:41,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446099926] [2023-11-12 02:20:41,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:41,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:41,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:41,567 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:20:41,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:41,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446099926] [2023-11-12 02:20:41,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446099926] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:20:41,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:20:41,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:20:41,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660028771] [2023-11-12 02:20:41,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:20:41,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:20:41,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:41,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:20:41,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:20:41,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 437 out of 1053 [2023-11-12 02:20:41,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 71 transitions, 347 flow. Second operand has 3 states, 3 states have (on average 438.3333333333333) internal successors, (1315), 3 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:41,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:20:41,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 437 of 1053 [2023-11-12 02:20:41,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:20:41,821 INFO L124 PetriNetUnfolderBase]: 231/419 cut-off events. [2023-11-12 02:20:41,822 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-12 02:20:41,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 956 conditions, 419 events. 231/419 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1583 event pairs, 195 based on Foata normal form. 0/230 useless extension candidates. Maximal degree in co-relation 948. Up to 419 conditions per place. [2023-11-12 02:20:41,825 INFO L140 encePairwiseOnDemand]: 1051/1053 looper letters, 65 selfloop transitions, 1 changer transitions 0/66 dead transitions. [2023-11-12 02:20:41,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 66 transitions, 446 flow [2023-11-12 02:20:41,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:20:41,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:20:41,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1352 transitions. [2023-11-12 02:20:41,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4279835390946502 [2023-11-12 02:20:41,831 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1352 transitions. [2023-11-12 02:20:41,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1352 transitions. [2023-11-12 02:20:41,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:20:41,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1352 transitions. [2023-11-12 02:20:41,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 450.6666666666667) internal successors, (1352), 3 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:41,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1053.0) internal successors, (4212), 4 states have internal predecessors, (4212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:41,845 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1053.0) internal successors, (4212), 4 states have internal predecessors, (4212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:41,845 INFO L175 Difference]: Start difference. First operand has 53 places, 71 transitions, 347 flow. Second operand 3 states and 1352 transitions. [2023-11-12 02:20:41,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 66 transitions, 446 flow [2023-11-12 02:20:41,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 66 transitions, 401 flow, removed 18 selfloop flow, removed 1 redundant places. [2023-11-12 02:20:41,854 INFO L231 Difference]: Finished difference. Result has 53 places, 66 transitions, 271 flow [2023-11-12 02:20:41,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1053, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=271, PETRI_PLACES=53, PETRI_TRANSITIONS=66} [2023-11-12 02:20:41,857 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -3 predicate places. [2023-11-12 02:20:41,857 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 66 transitions, 271 flow [2023-11-12 02:20:41,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 438.3333333333333) internal successors, (1315), 3 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:41,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:41,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-12 02:20:41,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:20:41,858 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-12 02:20:41,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:41,859 INFO L85 PathProgramCache]: Analyzing trace with hash 56811564, now seen corresponding path program 1 times [2023-11-12 02:20:41,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:41,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418640062] [2023-11-12 02:20:41,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:41,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:41,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:41,940 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:20:41,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:41,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418640062] [2023-11-12 02:20:41,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418640062] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:20:41,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:20:41,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:20:41,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566562138] [2023-11-12 02:20:41,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:20:41,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:20:41,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:41,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:20:41,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:20:41,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 1053 [2023-11-12 02:20:41,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 66 transitions, 271 flow. Second operand has 3 states, 3 states have (on average 436.3333333333333) internal successors, (1309), 3 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:41,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:20:41,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 1053 [2023-11-12 02:20:41,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:20:42,158 INFO L124 PetriNetUnfolderBase]: 227/414 cut-off events. [2023-11-12 02:20:42,158 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-12 02:20:42,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 915 conditions, 414 events. 227/414 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1575 event pairs, 195 based on Foata normal form. 0/233 useless extension candidates. Maximal degree in co-relation 906. Up to 414 conditions per place. [2023-11-12 02:20:42,162 INFO L140 encePairwiseOnDemand]: 1051/1053 looper letters, 60 selfloop transitions, 1 changer transitions 0/61 dead transitions. [2023-11-12 02:20:42,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 61 transitions, 367 flow [2023-11-12 02:20:42,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:20:42,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:20:42,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1345 transitions. [2023-11-12 02:20:42,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4257676479898702 [2023-11-12 02:20:42,169 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1345 transitions. [2023-11-12 02:20:42,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1345 transitions. [2023-11-12 02:20:42,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:20:42,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1345 transitions. [2023-11-12 02:20:42,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 448.3333333333333) internal successors, (1345), 3 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:42,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1053.0) internal successors, (4212), 4 states have internal predecessors, (4212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:42,191 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1053.0) internal successors, (4212), 4 states have internal predecessors, (4212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:42,192 INFO L175 Difference]: Start difference. First operand has 53 places, 66 transitions, 271 flow. Second operand 3 states and 1345 transitions. [2023-11-12 02:20:42,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 61 transitions, 367 flow [2023-11-12 02:20:42,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 61 transitions, 366 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:20:42,196 INFO L231 Difference]: Finished difference. Result has 53 places, 61 transitions, 246 flow [2023-11-12 02:20:42,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1053, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=246, PETRI_PLACES=53, PETRI_TRANSITIONS=61} [2023-11-12 02:20:42,198 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -3 predicate places. [2023-11-12 02:20:42,198 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 61 transitions, 246 flow [2023-11-12 02:20:42,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 436.3333333333333) internal successors, (1309), 3 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:42,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:42,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:20:42,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:20:42,199 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-12 02:20:42,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:42,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1829985, now seen corresponding path program 1 times [2023-11-12 02:20:42,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:42,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214009979] [2023-11-12 02:20:42,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:42,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:42,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:42,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:20:42,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:42,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214009979] [2023-11-12 02:20:42,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214009979] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:20:42,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290385106] [2023-11-12 02:20:42,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:42,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:20:42,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2a213a-2cd9-4020-8a28-65e36259f90e/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:20:42,302 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2a213a-2cd9-4020-8a28-65e36259f90e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:20:42,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2a213a-2cd9-4020-8a28-65e36259f90e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:20:42,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:42,415 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:20:42,416 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:20:42,425 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:20:42,425 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:20:42,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290385106] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:20:42,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:20:42,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-12 02:20:42,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200765774] [2023-11-12 02:20:42,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:20:42,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:20:42,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:42,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:20:42,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:20:42,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 433 out of 1053 [2023-11-12 02:20:42,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 61 transitions, 246 flow. Second operand has 4 states, 4 states have (on average 433.75) internal successors, (1735), 4 states have internal predecessors, (1735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:42,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:20:42,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 433 of 1053 [2023-11-12 02:20:42,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:20:42,672 INFO L124 PetriNetUnfolderBase]: 221/406 cut-off events. [2023-11-12 02:20:42,672 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-12 02:20:42,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 884 conditions, 406 events. 221/406 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1554 event pairs, 195 based on Foata normal form. 2/233 useless extension candidates. Maximal degree in co-relation 875. Up to 389 conditions per place. [2023-11-12 02:20:42,676 INFO L140 encePairwiseOnDemand]: 1046/1053 looper letters, 41 selfloop transitions, 12 changer transitions 0/53 dead transitions. [2023-11-12 02:20:42,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 53 transitions, 310 flow [2023-11-12 02:20:42,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:20:42,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:20:42,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1775 transitions. [2023-11-12 02:20:42,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4214150047483381 [2023-11-12 02:20:42,685 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1775 transitions. [2023-11-12 02:20:42,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1775 transitions. [2023-11-12 02:20:42,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:20:42,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1775 transitions. [2023-11-12 02:20:42,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 443.75) internal successors, (1775), 4 states have internal predecessors, (1775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:42,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1053.0) internal successors, (5265), 5 states have internal predecessors, (5265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:42,703 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1053.0) internal successors, (5265), 5 states have internal predecessors, (5265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:42,703 INFO L175 Difference]: Start difference. First operand has 53 places, 61 transitions, 246 flow. Second operand 4 states and 1775 transitions. [2023-11-12 02:20:42,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 53 transitions, 310 flow [2023-11-12 02:20:42,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 53 transitions, 309 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:20:42,706 INFO L231 Difference]: Finished difference. Result has 52 places, 53 transitions, 227 flow [2023-11-12 02:20:42,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1053, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=227, PETRI_PLACES=52, PETRI_TRANSITIONS=53} [2023-11-12 02:20:42,707 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -4 predicate places. [2023-11-12 02:20:42,708 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 53 transitions, 227 flow [2023-11-12 02:20:42,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 433.75) internal successors, (1735), 4 states have internal predecessors, (1735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:42,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:42,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-12 02:20:42,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2a213a-2cd9-4020-8a28-65e36259f90e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 02:20:42,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2a213a-2cd9-4020-8a28-65e36259f90e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:20:42,916 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-12 02:20:42,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:42,916 INFO L85 PathProgramCache]: Analyzing trace with hash 56812262, now seen corresponding path program 1 times [2023-11-12 02:20:42,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:42,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572274149] [2023-11-12 02:20:42,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:42,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:42,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:42,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:20:42,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:42,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572274149] [2023-11-12 02:20:42,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572274149] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:20:42,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:20:42,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:20:42,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751450446] [2023-11-12 02:20:42,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:20:42,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:20:42,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:42,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:20:42,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:20:43,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 433 out of 1053 [2023-11-12 02:20:43,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 53 transitions, 227 flow. Second operand has 3 states, 3 states have (on average 434.3333333333333) internal successors, (1303), 3 states have internal predecessors, (1303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:43,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:20:43,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 433 of 1053 [2023-11-12 02:20:43,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:20:43,231 INFO L124 PetriNetUnfolderBase]: 223/410 cut-off events. [2023-11-12 02:20:43,232 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-11-12 02:20:43,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 904 conditions, 410 events. 223/410 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1571 event pairs, 195 based on Foata normal form. 0/236 useless extension candidates. Maximal degree in co-relation 895. Up to 404 conditions per place. [2023-11-12 02:20:43,236 INFO L140 encePairwiseOnDemand]: 1044/1053 looper letters, 48 selfloop transitions, 9 changer transitions 0/57 dead transitions. [2023-11-12 02:20:43,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 57 transitions, 349 flow [2023-11-12 02:20:43,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:20:43,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:20:43,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1344 transitions. [2023-11-12 02:20:43,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4254510921177588 [2023-11-12 02:20:43,242 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1344 transitions. [2023-11-12 02:20:43,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1344 transitions. [2023-11-12 02:20:43,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:20:43,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1344 transitions. [2023-11-12 02:20:43,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 448.0) internal successors, (1344), 3 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:43,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1053.0) internal successors, (4212), 4 states have internal predecessors, (4212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:43,255 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1053.0) internal successors, (4212), 4 states have internal predecessors, (4212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:43,256 INFO L175 Difference]: Start difference. First operand has 52 places, 53 transitions, 227 flow. Second operand 3 states and 1344 transitions. [2023-11-12 02:20:43,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 57 transitions, 349 flow [2023-11-12 02:20:43,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 57 transitions, 335 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:20:43,260 INFO L231 Difference]: Finished difference. Result has 54 places, 57 transitions, 273 flow [2023-11-12 02:20:43,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1053, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=273, PETRI_PLACES=54, PETRI_TRANSITIONS=57} [2023-11-12 02:20:43,263 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -2 predicate places. [2023-11-12 02:20:43,263 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 57 transitions, 273 flow [2023-11-12 02:20:43,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 434.3333333333333) internal successors, (1303), 3 states have internal predecessors, (1303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:43,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:43,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 02:20:43,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 02:20:43,264 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-12 02:20:43,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:43,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1761183210, now seen corresponding path program 1 times [2023-11-12 02:20:43,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:43,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72870559] [2023-11-12 02:20:43,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:43,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:43,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:43,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:20:43,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:43,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72870559] [2023-11-12 02:20:43,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72870559] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:20:43,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58172146] [2023-11-12 02:20:43,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:43,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:20:43,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2a213a-2cd9-4020-8a28-65e36259f90e/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:20:43,354 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2a213a-2cd9-4020-8a28-65e36259f90e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:20:43,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2a213a-2cd9-4020-8a28-65e36259f90e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 02:20:43,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:43,486 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 02:20:43,487 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:20:43,508 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:20:43,508 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:20:43,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58172146] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:20:43,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:20:43,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-11-12 02:20:43,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308727740] [2023-11-12 02:20:43,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:20:43,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:20:43,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:43,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:20:43,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:20:43,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 431 out of 1053 [2023-11-12 02:20:43,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 57 transitions, 273 flow. Second operand has 3 states, 3 states have (on average 432.6666666666667) internal successors, (1298), 3 states have internal predecessors, (1298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:43,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:20:43,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 431 of 1053 [2023-11-12 02:20:43,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:20:43,739 INFO L124 PetriNetUnfolderBase]: 222/409 cut-off events. [2023-11-12 02:20:43,740 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2023-11-12 02:20:43,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 918 conditions, 409 events. 222/409 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1572 event pairs, 195 based on Foata normal form. 1/238 useless extension candidates. Maximal degree in co-relation 908. Up to 409 conditions per place. [2023-11-12 02:20:43,744 INFO L140 encePairwiseOnDemand]: 1050/1053 looper letters, 54 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2023-11-12 02:20:43,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 56 transitions, 381 flow [2023-11-12 02:20:43,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:20:43,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:20:43,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1332 transitions. [2023-11-12 02:20:43,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42165242165242167 [2023-11-12 02:20:43,750 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1332 transitions. [2023-11-12 02:20:43,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1332 transitions. [2023-11-12 02:20:43,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:20:43,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1332 transitions. [2023-11-12 02:20:43,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 444.0) internal successors, (1332), 3 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:43,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1053.0) internal successors, (4212), 4 states have internal predecessors, (4212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:43,764 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1053.0) internal successors, (4212), 4 states have internal predecessors, (4212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:43,764 INFO L175 Difference]: Start difference. First operand has 54 places, 57 transitions, 273 flow. Second operand 3 states and 1332 transitions. [2023-11-12 02:20:43,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 56 transitions, 381 flow [2023-11-12 02:20:43,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 56 transitions, 363 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:20:43,767 INFO L231 Difference]: Finished difference. Result has 54 places, 56 transitions, 255 flow [2023-11-12 02:20:43,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1053, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=255, PETRI_PLACES=54, PETRI_TRANSITIONS=56} [2023-11-12 02:20:43,768 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -2 predicate places. [2023-11-12 02:20:43,768 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 56 transitions, 255 flow [2023-11-12 02:20:43,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 432.6666666666667) internal successors, (1298), 3 states have internal predecessors, (1298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:43,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:43,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-12 02:20:43,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2a213a-2cd9-4020-8a28-65e36259f90e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-12 02:20:43,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2a213a-2cd9-4020-8a28-65e36259f90e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-12 02:20:43,975 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-12 02:20:43,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:43,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1310789866, now seen corresponding path program 1 times [2023-11-12 02:20:43,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:43,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073458965] [2023-11-12 02:20:43,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:43,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:44,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:44,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:20:44,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:44,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073458965] [2023-11-12 02:20:44,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073458965] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:20:44,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543558340] [2023-11-12 02:20:44,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:44,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:20:44,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2a213a-2cd9-4020-8a28-65e36259f90e/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:20:44,100 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2a213a-2cd9-4020-8a28-65e36259f90e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:20:44,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2a213a-2cd9-4020-8a28-65e36259f90e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 02:20:44,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:44,251 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 02:20:44,253 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:20:44,285 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:20:44,286 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:20:44,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543558340] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:20:44,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:20:44,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2023-11-12 02:20:44,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785596226] [2023-11-12 02:20:44,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:20:44,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:20:44,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:44,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:20:44,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:20:44,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 425 out of 1053 [2023-11-12 02:20:44,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 56 transitions, 255 flow. Second operand has 4 states, 4 states have (on average 426.5) internal successors, (1706), 4 states have internal predecessors, (1706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:44,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:20:44,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 425 of 1053 [2023-11-12 02:20:44,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:20:44,606 INFO L124 PetriNetUnfolderBase]: 221/408 cut-off events. [2023-11-12 02:20:44,606 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2023-11-12 02:20:44,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 906 conditions, 408 events. 221/408 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1562 event pairs, 195 based on Foata normal form. 1/235 useless extension candidates. Maximal degree in co-relation 896. Up to 403 conditions per place. [2023-11-12 02:20:44,610 INFO L140 encePairwiseOnDemand]: 1048/1053 looper letters, 48 selfloop transitions, 7 changer transitions 0/55 dead transitions. [2023-11-12 02:20:44,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 55 transitions, 358 flow [2023-11-12 02:20:44,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:20:44,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:20:44,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1740 transitions. [2023-11-12 02:20:44,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4131054131054131 [2023-11-12 02:20:44,617 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1740 transitions. [2023-11-12 02:20:44,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1740 transitions. [2023-11-12 02:20:44,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:20:44,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1740 transitions. [2023-11-12 02:20:44,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 435.0) internal successors, (1740), 4 states have internal predecessors, (1740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:44,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1053.0) internal successors, (5265), 5 states have internal predecessors, (5265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:44,631 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1053.0) internal successors, (5265), 5 states have internal predecessors, (5265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:44,632 INFO L175 Difference]: Start difference. First operand has 54 places, 56 transitions, 255 flow. Second operand 4 states and 1740 transitions. [2023-11-12 02:20:44,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 55 transitions, 358 flow [2023-11-12 02:20:44,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 55 transitions, 354 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-12 02:20:44,634 INFO L231 Difference]: Finished difference. Result has 56 places, 55 transitions, 258 flow [2023-11-12 02:20:44,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1053, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=258, PETRI_PLACES=56, PETRI_TRANSITIONS=55} [2023-11-12 02:20:44,635 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 0 predicate places. [2023-11-12 02:20:44,635 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 55 transitions, 258 flow [2023-11-12 02:20:44,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 426.5) internal successors, (1706), 4 states have internal predecessors, (1706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:44,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:44,636 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-12 02:20:44,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2a213a-2cd9-4020-8a28-65e36259f90e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-12 02:20:44,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2a213a-2cd9-4020-8a28-65e36259f90e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-12 02:20:44,842 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-12 02:20:44,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:44,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1313219742, now seen corresponding path program 2 times [2023-11-12 02:20:44,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:44,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695807122] [2023-11-12 02:20:44,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:44,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:44,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:44,942 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:20:44,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:44,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695807122] [2023-11-12 02:20:44,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695807122] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:20:44,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204327512] [2023-11-12 02:20:44,943 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 02:20:44,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:20:44,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2a213a-2cd9-4020-8a28-65e36259f90e/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:20:44,945 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2a213a-2cd9-4020-8a28-65e36259f90e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:20:44,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2a213a-2cd9-4020-8a28-65e36259f90e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-12 02:20:45,069 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-12 02:20:45,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:20:45,071 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 02:20:45,072 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:20:45,098 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-12 02:20:45,098 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:20:45,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [204327512] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:20:45,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:20:45,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-12 02:20:45,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881974209] [2023-11-12 02:20:45,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:20:45,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:20:45,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:45,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:20:45,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:20:45,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 437 out of 1053 [2023-11-12 02:20:45,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 55 transitions, 258 flow. Second operand has 3 states, 3 states have (on average 438.0) internal successors, (1314), 3 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:45,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:20:45,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 437 of 1053 [2023-11-12 02:20:45,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:20:45,339 INFO L124 PetriNetUnfolderBase]: 221/406 cut-off events. [2023-11-12 02:20:45,340 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2023-11-12 02:20:45,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 899 conditions, 406 events. 221/406 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1545 event pairs, 195 based on Foata normal form. 2/234 useless extension candidates. Maximal degree in co-relation 889. Up to 392 conditions per place. [2023-11-12 02:20:45,344 INFO L140 encePairwiseOnDemand]: 1049/1053 looper letters, 48 selfloop transitions, 5 changer transitions 0/53 dead transitions. [2023-11-12 02:20:45,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 53 transitions, 344 flow [2023-11-12 02:20:45,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:20:45,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:20:45,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1348 transitions. [2023-11-12 02:20:45,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4267173156062045 [2023-11-12 02:20:45,351 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1348 transitions. [2023-11-12 02:20:45,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1348 transitions. [2023-11-12 02:20:45,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:20:45,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1348 transitions. [2023-11-12 02:20:45,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 449.3333333333333) internal successors, (1348), 3 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:45,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1053.0) internal successors, (4212), 4 states have internal predecessors, (4212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:45,363 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1053.0) internal successors, (4212), 4 states have internal predecessors, (4212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:45,364 INFO L175 Difference]: Start difference. First operand has 56 places, 55 transitions, 258 flow. Second operand 3 states and 1348 transitions. [2023-11-12 02:20:45,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 53 transitions, 344 flow [2023-11-12 02:20:45,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 53 transitions, 299 flow, removed 3 selfloop flow, removed 7 redundant places. [2023-11-12 02:20:45,366 INFO L231 Difference]: Finished difference. Result has 49 places, 53 transitions, 203 flow [2023-11-12 02:20:45,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1053, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=203, PETRI_PLACES=49, PETRI_TRANSITIONS=53} [2023-11-12 02:20:45,369 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -7 predicate places. [2023-11-12 02:20:45,369 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 53 transitions, 203 flow [2023-11-12 02:20:45,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 438.0) internal successors, (1314), 3 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:45,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:45,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:20:45,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2a213a-2cd9-4020-8a28-65e36259f90e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-12 02:20:45,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2a213a-2cd9-4020-8a28-65e36259f90e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-12 02:20:45,577 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-12 02:20:45,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:45,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1980401744, now seen corresponding path program 1 times [2023-11-12 02:20:45,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:45,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754279906] [2023-11-12 02:20:45,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:45,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:45,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:45,680 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:20:45,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:45,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754279906] [2023-11-12 02:20:45,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754279906] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:20:45,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423442819] [2023-11-12 02:20:45,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:45,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:20:45,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2a213a-2cd9-4020-8a28-65e36259f90e/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:20:45,686 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2a213a-2cd9-4020-8a28-65e36259f90e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:20:45,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2a213a-2cd9-4020-8a28-65e36259f90e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-12 02:20:45,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:45,826 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-12 02:20:45,828 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:20:45,907 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:20:45,907 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:20:45,989 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 02:20:45,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423442819] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:20:45,989 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:20:45,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 12 [2023-11-12 02:20:45,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005599529] [2023-11-12 02:20:45,990 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:20:45,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-12 02:20:45,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:45,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-12 02:20:45,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-11-12 02:20:46,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 405 out of 1053 [2023-11-12 02:20:46,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 53 transitions, 203 flow. Second operand has 13 states, 13 states have (on average 406.53846153846155) internal successors, (5285), 13 states have internal predecessors, (5285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:46,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:20:46,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 405 of 1053 [2023-11-12 02:20:46,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:20:47,203 INFO L124 PetriNetUnfolderBase]: 442/808 cut-off events. [2023-11-12 02:20:47,203 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-11-12 02:20:47,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1728 conditions, 808 events. 442/808 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3739 event pairs, 390 based on Foata normal form. 0/457 useless extension candidates. Maximal degree in co-relation 1722. Up to 397 conditions per place. [2023-11-12 02:20:47,210 INFO L140 encePairwiseOnDemand]: 1041/1053 looper letters, 72 selfloop transitions, 30 changer transitions 0/102 dead transitions. [2023-11-12 02:20:47,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 102 transitions, 583 flow [2023-11-12 02:20:47,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-12 02:20:47,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-12 02:20:47,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 4545 transitions. [2023-11-12 02:20:47,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923853923853924 [2023-11-12 02:20:47,228 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 4545 transitions. [2023-11-12 02:20:47,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 4545 transitions. [2023-11-12 02:20:47,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:20:47,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 4545 transitions. [2023-11-12 02:20:47,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 413.1818181818182) internal successors, (4545), 11 states have internal predecessors, (4545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:47,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 1053.0) internal successors, (12636), 12 states have internal predecessors, (12636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:47,268 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 1053.0) internal successors, (12636), 12 states have internal predecessors, (12636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:47,269 INFO L175 Difference]: Start difference. First operand has 49 places, 53 transitions, 203 flow. Second operand 11 states and 4545 transitions. [2023-11-12 02:20:47,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 102 transitions, 583 flow [2023-11-12 02:20:47,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 102 transitions, 565 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:20:47,273 INFO L231 Difference]: Finished difference. Result has 63 places, 71 transitions, 409 flow [2023-11-12 02:20:47,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1053, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=409, PETRI_PLACES=63, PETRI_TRANSITIONS=71} [2023-11-12 02:20:47,274 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 7 predicate places. [2023-11-12 02:20:47,274 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 71 transitions, 409 flow [2023-11-12 02:20:47,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 406.53846153846155) internal successors, (5285), 13 states have internal predecessors, (5285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:47,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:47,276 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-12 02:20:47,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2a213a-2cd9-4020-8a28-65e36259f90e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-12 02:20:47,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2a213a-2cd9-4020-8a28-65e36259f90e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-12 02:20:47,483 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-12 02:20:47,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:47,483 INFO L85 PathProgramCache]: Analyzing trace with hash 790971869, now seen corresponding path program 1 times [2023-11-12 02:20:47,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:47,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598320244] [2023-11-12 02:20:47,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:47,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:47,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:47,542 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 02:20:47,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:47,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598320244] [2023-11-12 02:20:47,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598320244] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:20:47,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:20:47,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:20:47,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811620192] [2023-11-12 02:20:47,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:20:47,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:20:47,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:47,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:20:47,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:20:47,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 433 out of 1053 [2023-11-12 02:20:47,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 71 transitions, 409 flow. Second operand has 3 states, 3 states have (on average 435.3333333333333) internal successors, (1306), 3 states have internal predecessors, (1306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:47,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:20:47,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 433 of 1053 [2023-11-12 02:20:47,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:20:47,869 INFO L124 PetriNetUnfolderBase]: 439/802 cut-off events. [2023-11-12 02:20:47,869 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2023-11-12 02:20:47,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1769 conditions, 802 events. 439/802 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3646 event pairs, 390 based on Foata normal form. 6/469 useless extension candidates. Maximal degree in co-relation 1758. Up to 777 conditions per place. [2023-11-12 02:20:47,877 INFO L140 encePairwiseOnDemand]: 1049/1053 looper letters, 53 selfloop transitions, 13 changer transitions 0/66 dead transitions. [2023-11-12 02:20:47,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 66 transitions, 501 flow [2023-11-12 02:20:47,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:20:47,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:20:47,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1334 transitions. [2023-11-12 02:20:47,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222855333966445 [2023-11-12 02:20:47,883 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1334 transitions. [2023-11-12 02:20:47,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1334 transitions. [2023-11-12 02:20:47,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:20:47,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1334 transitions. [2023-11-12 02:20:47,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 444.6666666666667) internal successors, (1334), 3 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:47,892 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1053.0) internal successors, (4212), 4 states have internal predecessors, (4212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:47,894 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1053.0) internal successors, (4212), 4 states have internal predecessors, (4212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:47,894 INFO L175 Difference]: Start difference. First operand has 63 places, 71 transitions, 409 flow. Second operand 3 states and 1334 transitions. [2023-11-12 02:20:47,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 66 transitions, 501 flow [2023-11-12 02:20:47,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 66 transitions, 460 flow, removed 10 selfloop flow, removed 3 redundant places. [2023-11-12 02:20:47,897 INFO L231 Difference]: Finished difference. Result has 60 places, 66 transitions, 354 flow [2023-11-12 02:20:47,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1053, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=354, PETRI_PLACES=60, PETRI_TRANSITIONS=66} [2023-11-12 02:20:47,898 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 4 predicate places. [2023-11-12 02:20:47,899 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 66 transitions, 354 flow [2023-11-12 02:20:47,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 435.3333333333333) internal successors, (1306), 3 states have internal predecessors, (1306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:47,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:47,900 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:20:47,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-12 02:20:47,900 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-12 02:20:47,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:47,900 INFO L85 PathProgramCache]: Analyzing trace with hash -492031175, now seen corresponding path program 1 times [2023-11-12 02:20:47,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:47,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203905173] [2023-11-12 02:20:47,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:47,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:47,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:47,992 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-12 02:20:47,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:47,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203905173] [2023-11-12 02:20:47,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203905173] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:20:47,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:20:47,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:20:47,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703598510] [2023-11-12 02:20:47,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:20:47,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:20:47,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:47,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:20:47,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:20:48,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 425 out of 1053 [2023-11-12 02:20:48,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 66 transitions, 354 flow. Second operand has 4 states, 4 states have (on average 427.0) internal successors, (1708), 4 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:48,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:20:48,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 425 of 1053 [2023-11-12 02:20:48,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:20:48,460 INFO L124 PetriNetUnfolderBase]: 437/800 cut-off events. [2023-11-12 02:20:48,460 INFO L125 PetriNetUnfolderBase]: For 73/73 co-relation queries the response was YES. [2023-11-12 02:20:48,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1754 conditions, 800 events. 437/800 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3631 event pairs, 390 based on Foata normal form. 2/467 useless extension candidates. Maximal degree in co-relation 1743. Up to 792 conditions per place. [2023-11-12 02:20:48,467 INFO L140 encePairwiseOnDemand]: 1049/1053 looper letters, 53 selfloop transitions, 11 changer transitions 0/64 dead transitions. [2023-11-12 02:20:48,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 64 transitions, 471 flow [2023-11-12 02:20:48,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:20:48,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:20:48,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1735 transitions. [2023-11-12 02:20:48,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119183285849953 [2023-11-12 02:20:48,477 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1735 transitions. [2023-11-12 02:20:48,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1735 transitions. [2023-11-12 02:20:48,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:20:48,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1735 transitions. [2023-11-12 02:20:48,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 433.75) internal successors, (1735), 4 states have internal predecessors, (1735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:48,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1053.0) internal successors, (5265), 5 states have internal predecessors, (5265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:48,497 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1053.0) internal successors, (5265), 5 states have internal predecessors, (5265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:48,497 INFO L175 Difference]: Start difference. First operand has 60 places, 66 transitions, 354 flow. Second operand 4 states and 1735 transitions. [2023-11-12 02:20:48,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 64 transitions, 471 flow [2023-11-12 02:20:48,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 64 transitions, 423 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-12 02:20:48,501 INFO L231 Difference]: Finished difference. Result has 59 places, 64 transitions, 317 flow [2023-11-12 02:20:48,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1053, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=317, PETRI_PLACES=59, PETRI_TRANSITIONS=64} [2023-11-12 02:20:48,503 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 3 predicate places. [2023-11-12 02:20:48,503 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 64 transitions, 317 flow [2023-11-12 02:20:48,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 427.0) internal successors, (1708), 4 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:48,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:48,504 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-12 02:20:48,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-12 02:20:48,504 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-11-12 02:20:48,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:48,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1249672780, now seen corresponding path program 2 times [2023-11-12 02:20:48,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:48,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644120790] [2023-11-12 02:20:48,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:48,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:48,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:48,593 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 02:20:48,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:48,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644120790] [2023-11-12 02:20:48,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644120790] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:20:48,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669750820] [2023-11-12 02:20:48,594 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 02:20:48,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:20:48,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2a213a-2cd9-4020-8a28-65e36259f90e/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:20:48,596 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2a213a-2cd9-4020-8a28-65e36259f90e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:20:48,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2a213a-2cd9-4020-8a28-65e36259f90e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-12 02:20:48,738 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-12 02:20:48,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:20:48,740 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 02:20:48,741 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:20:48,764 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-12 02:20:48,764 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:20:48,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669750820] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:20:48,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:20:48,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-12 02:20:48,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297088299] [2023-11-12 02:20:48,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:20:48,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:20:48,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:48,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:20:48,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:20:48,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 437 out of 1053 [2023-11-12 02:20:48,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 64 transitions, 317 flow. Second operand has 3 states, 3 states have (on average 439.3333333333333) internal successors, (1318), 3 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:48,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:20:48,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 437 of 1053 [2023-11-12 02:20:48,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:20:49,063 INFO L124 PetriNetUnfolderBase]: 437/797 cut-off events. [2023-11-12 02:20:49,064 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-11-12 02:20:49,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1723 conditions, 797 events. 437/797 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3617 event pairs, 390 based on Foata normal form. 0/462 useless extension candidates. Maximal degree in co-relation 1713. Up to 777 conditions per place. [2023-11-12 02:20:49,070 INFO L140 encePairwiseOnDemand]: 1049/1053 looper letters, 49 selfloop transitions, 13 changer transitions 0/62 dead transitions. [2023-11-12 02:20:49,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 62 transitions, 425 flow [2023-11-12 02:20:49,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:20:49,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:20:49,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1344 transitions. [2023-11-12 02:20:49,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4254510921177588 [2023-11-12 02:20:49,076 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1344 transitions. [2023-11-12 02:20:49,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1344 transitions. [2023-11-12 02:20:49,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:20:49,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1344 transitions. [2023-11-12 02:20:49,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 448.0) internal successors, (1344), 3 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:49,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1053.0) internal successors, (4212), 4 states have internal predecessors, (4212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:49,088 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1053.0) internal successors, (4212), 4 states have internal predecessors, (4212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:49,088 INFO L175 Difference]: Start difference. First operand has 59 places, 64 transitions, 317 flow. Second operand 3 states and 1344 transitions. [2023-11-12 02:20:49,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 62 transitions, 425 flow [2023-11-12 02:20:49,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 62 transitions, 411 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-12 02:20:49,091 INFO L231 Difference]: Finished difference. Result has 57 places, 62 transitions, 313 flow [2023-11-12 02:20:49,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1053, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=313, PETRI_PLACES=57, PETRI_TRANSITIONS=62} [2023-11-12 02:20:49,092 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 1 predicate places. [2023-11-12 02:20:49,092 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 62 transitions, 313 flow [2023-11-12 02:20:49,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 439.3333333333333) internal successors, (1318), 3 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:49,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:20:49,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:20:49,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd2a213a-2cd9-4020-8a28-65e36259f90e/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0