./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1015eb-5fda-4107-a1e2-c7f8a31897d9/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1015eb-5fda-4107-a1e2-c7f8a31897d9/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1015eb-5fda-4107-a1e2-c7f8a31897d9/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1015eb-5fda-4107-a1e2-c7f8a31897d9/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1015eb-5fda-4107-a1e2-c7f8a31897d9/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1015eb-5fda-4107-a1e2-c7f8a31897d9/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ebedbc62bd44b0c214a81c07c6f99e850a5d96675b77716f8547d1b39e8b2cf8 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:50:39,041 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:50:39,170 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1015eb-5fda-4107-a1e2-c7f8a31897d9/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-26 11:50:39,177 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:50:39,178 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:50:39,221 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:50:39,222 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:50:39,223 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:50:39,224 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:50:39,229 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:50:39,229 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:50:39,230 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:50:39,231 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:50:39,233 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:50:39,233 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:50:39,234 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:50:39,234 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:50:39,235 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:50:39,236 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:50:39,236 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:50:39,238 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:50:39,239 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:50:39,239 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:50:39,240 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:50:39,240 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 11:50:39,241 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:50:39,241 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:50:39,241 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:50:39,242 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:50:39,243 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:50:39,244 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:50:39,245 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:50:39,245 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:50:39,245 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:50:39,246 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:50:39,246 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:50:39,246 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:50:39,247 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:50:39,247 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:50:39,247 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:50:39,248 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:50:39,248 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:50:39,248 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:50:39,249 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:50:39,249 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_da1015eb-5fda-4107-a1e2-c7f8a31897d9/bin/uautomizer-verify-VRDe98Ueme/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1015eb-5fda-4107-a1e2-c7f8a31897d9/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ebedbc62bd44b0c214a81c07c6f99e850a5d96675b77716f8547d1b39e8b2cf8 [2023-11-26 11:50:39,550 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:50:39,573 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:50:39,576 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:50:39,577 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:50:39,578 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:50:39,579 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1015eb-5fda-4107-a1e2-c7f8a31897d9/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i [2023-11-26 11:50:42,716 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:50:43,075 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:50:43,076 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1015eb-5fda-4107-a1e2-c7f8a31897d9/sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i [2023-11-26 11:50:43,098 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1015eb-5fda-4107-a1e2-c7f8a31897d9/bin/uautomizer-verify-VRDe98Ueme/data/1379b47c7/65da143ad1944f84a75af4eb8f0a6b30/FLAG585ce3a25 [2023-11-26 11:50:43,112 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1015eb-5fda-4107-a1e2-c7f8a31897d9/bin/uautomizer-verify-VRDe98Ueme/data/1379b47c7/65da143ad1944f84a75af4eb8f0a6b30 [2023-11-26 11:50:43,115 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:50:43,117 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:50:43,118 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:50:43,118 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:50:43,124 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:50:43,125 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:50:43" (1/1) ... [2023-11-26 11:50:43,126 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ae87f0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:43, skipping insertion in model container [2023-11-26 11:50:43,126 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:50:43" (1/1) ... [2023-11-26 11:50:43,175 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:50:43,731 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:50:43,764 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:50:43,834 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:50:43,918 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:50:43,919 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:43 WrapperNode [2023-11-26 11:50:43,919 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:50:43,920 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:50:43,921 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:50:43,921 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:50:43,930 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:43" (1/1) ... [2023-11-26 11:50:43,961 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:43" (1/1) ... [2023-11-26 11:50:44,003 INFO L138 Inliner]: procedures = 263, calls = 14, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 87 [2023-11-26 11:50:44,004 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:50:44,005 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:50:44,005 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:50:44,005 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:50:44,018 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:43" (1/1) ... [2023-11-26 11:50:44,018 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:43" (1/1) ... [2023-11-26 11:50:44,035 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:43" (1/1) ... [2023-11-26 11:50:44,056 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [5, 1]. 83 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0, 0]. The 4 writes are split as follows [3, 1]. [2023-11-26 11:50:44,057 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:43" (1/1) ... [2023-11-26 11:50:44,058 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:43" (1/1) ... [2023-11-26 11:50:44,075 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:43" (1/1) ... [2023-11-26 11:50:44,083 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:43" (1/1) ... [2023-11-26 11:50:44,085 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:43" (1/1) ... [2023-11-26 11:50:44,091 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:43" (1/1) ... [2023-11-26 11:50:44,094 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:50:44,101 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:50:44,102 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:50:44,102 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:50:44,104 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:43" (1/1) ... [2023-11-26 11:50:44,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:50:44,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1015eb-5fda-4107-a1e2-c7f8a31897d9/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:50:44,150 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1015eb-5fda-4107-a1e2-c7f8a31897d9/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:50:44,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1015eb-5fda-4107-a1e2-c7f8a31897d9/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:50:44,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:50:44,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:50:44,194 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-26 11:50:44,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 11:50:44,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 11:50:44,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 11:50:44,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 11:50:44,195 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-26 11:50:44,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:50:44,197 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-26 11:50:44,197 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-26 11:50:44,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:50:44,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:50:44,202 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 11:50:44,345 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:50:44,347 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:50:44,574 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:50:44,700 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:50:44,701 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-26 11:50:44,701 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:50:44 BoogieIcfgContainer [2023-11-26 11:50:44,701 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:50:44,704 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:50:44,705 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:50:44,708 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:50:44,709 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:50:43" (1/3) ... [2023-11-26 11:50:44,709 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50ff3daf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:50:44, skipping insertion in model container [2023-11-26 11:50:44,710 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:43" (2/3) ... [2023-11-26 11:50:44,710 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50ff3daf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:50:44, skipping insertion in model container [2023-11-26 11:50:44,710 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:50:44" (3/3) ... [2023-11-26 11:50:44,712 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_02-funloop_norace.i [2023-11-26 11:50:44,721 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 11:50:44,733 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:50:44,733 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-11-26 11:50:44,733 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 11:50:44,788 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 11:50:44,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 39 transitions, 82 flow [2023-11-26 11:50:44,870 INFO L124 PetriNetUnfolderBase]: 3/38 cut-off events. [2023-11-26 11:50:44,870 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:50:44,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 38 events. 3/38 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 65 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2023-11-26 11:50:44,874 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 39 transitions, 82 flow [2023-11-26 11:50:44,879 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 38 transitions, 79 flow [2023-11-26 11:50:44,890 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:50:44,897 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;@369766, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:50:44,897 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2023-11-26 11:50:44,901 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:50:44,901 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-26 11:50:44,901 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:50:44,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:50:44,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-26 11:50:44,903 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-26 11:50:44,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:44,909 INFO L85 PathProgramCache]: Analyzing trace with hash 255141, now seen corresponding path program 1 times [2023-11-26 11:50:44,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:44,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728314222] [2023-11-26 11:50:44,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:44,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:45,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:45,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:50:45,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:45,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728314222] [2023-11-26 11:50:45,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728314222] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:45,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:45,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:50:45,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571555936] [2023-11-26 11:50:45,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:45,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:50:45,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:45,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:50:45,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:50:45,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2023-11-26 11:50:45,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 38 transitions, 79 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:45,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:50:45,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2023-11-26 11:50:45,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:50:45,500 INFO L124 PetriNetUnfolderBase]: 83/260 cut-off events. [2023-11-26 11:50:45,500 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:50:45,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 436 conditions, 260 events. 83/260 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1144 event pairs, 64 based on Foata normal form. 1/210 useless extension candidates. Maximal degree in co-relation 411. Up to 170 conditions per place. [2023-11-26 11:50:45,508 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 24 selfloop transitions, 3 changer transitions 0/40 dead transitions. [2023-11-26 11:50:45,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 40 transitions, 137 flow [2023-11-26 11:50:45,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:50:45,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:50:45,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 86 transitions. [2023-11-26 11:50:45,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5512820512820513 [2023-11-26 11:50:45,525 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 86 transitions. [2023-11-26 11:50:45,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 86 transitions. [2023-11-26 11:50:45,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:50:45,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 86 transitions. [2023-11-26 11:50:45,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:45,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:45,543 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:45,545 INFO L175 Difference]: Start difference. First operand has 39 places, 38 transitions, 79 flow. Second operand 4 states and 86 transitions. [2023-11-26 11:50:45,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 40 transitions, 137 flow [2023-11-26 11:50:45,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 40 transitions, 136 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:50:45,553 INFO L231 Difference]: Finished difference. Result has 43 places, 40 transitions, 102 flow [2023-11-26 11:50:45,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=102, PETRI_PLACES=43, PETRI_TRANSITIONS=40} [2023-11-26 11:50:45,561 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 4 predicate places. [2023-11-26 11:50:45,562 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 40 transitions, 102 flow [2023-11-26 11:50:45,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:45,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:50:45,562 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-26 11:50:45,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:50:45,563 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-26 11:50:45,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:45,565 INFO L85 PathProgramCache]: Analyzing trace with hash -988778725, now seen corresponding path program 1 times [2023-11-26 11:50:45,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:45,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867166397] [2023-11-26 11:50:45,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:45,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:45,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:45,723 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:50:45,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:45,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867166397] [2023-11-26 11:50:45,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867166397] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:50:45,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430872591] [2023-11-26 11:50:45,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:45,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:50:45,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1015eb-5fda-4107-a1e2-c7f8a31897d9/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:50:45,731 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1015eb-5fda-4107-a1e2-c7f8a31897d9/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:50:45,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1015eb-5fda-4107-a1e2-c7f8a31897d9/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:50:45,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:45,849 INFO L262 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:50:45,854 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:45,913 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:50:45,913 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:50:45,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430872591] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:45,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:50:45,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-26 11:50:45,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429625276] [2023-11-26 11:50:45,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:45,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:50:45,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:45,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:50:45,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:50:45,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2023-11-26 11:50:45,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 40 transitions, 102 flow. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:45,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:50:45,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2023-11-26 11:50:45,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:50:46,070 INFO L124 PetriNetUnfolderBase]: 83/259 cut-off events. [2023-11-26 11:50:46,070 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-26 11:50:46,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 445 conditions, 259 events. 83/259 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1140 event pairs, 64 based on Foata normal form. 1/209 useless extension candidates. Maximal degree in co-relation 428. Up to 165 conditions per place. [2023-11-26 11:50:46,075 INFO L140 encePairwiseOnDemand]: 34/39 looper letters, 20 selfloop transitions, 6 changer transitions 0/39 dead transitions. [2023-11-26 11:50:46,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 39 transitions, 150 flow [2023-11-26 11:50:46,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:50:46,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 11:50:46,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 111 transitions. [2023-11-26 11:50:46,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47435897435897434 [2023-11-26 11:50:46,078 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 111 transitions. [2023-11-26 11:50:46,078 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 111 transitions. [2023-11-26 11:50:46,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:50:46,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 111 transitions. [2023-11-26 11:50:46,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:46,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:46,082 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:46,083 INFO L175 Difference]: Start difference. First operand has 43 places, 40 transitions, 102 flow. Second operand 6 states and 111 transitions. [2023-11-26 11:50:46,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 39 transitions, 150 flow [2023-11-26 11:50:46,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 39 transitions, 148 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:50:46,086 INFO L231 Difference]: Finished difference. Result has 46 places, 39 transitions, 108 flow [2023-11-26 11:50:46,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=108, PETRI_PLACES=46, PETRI_TRANSITIONS=39} [2023-11-26 11:50:46,087 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 7 predicate places. [2023-11-26 11:50:46,087 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 39 transitions, 108 flow [2023-11-26 11:50:46,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:46,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:50:46,088 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-26 11:50:46,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1015eb-5fda-4107-a1e2-c7f8a31897d9/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 11:50:46,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1015eb-5fda-4107-a1e2-c7f8a31897d9/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:50:46,295 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-26 11:50:46,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:46,296 INFO L85 PathProgramCache]: Analyzing trace with hash -587369151, now seen corresponding path program 1 times [2023-11-26 11:50:46,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:46,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903022845] [2023-11-26 11:50:46,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:46,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:46,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:46,351 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 11:50:46,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:46,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903022845] [2023-11-26 11:50:46,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903022845] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:46,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:46,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:50:46,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178553135] [2023-11-26 11:50:46,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:46,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:50:46,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:46,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:50:46,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:50:46,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2023-11-26 11:50:46,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 39 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:46,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:50:46,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2023-11-26 11:50:46,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:50:46,441 INFO L124 PetriNetUnfolderBase]: 83/258 cut-off events. [2023-11-26 11:50:46,441 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-26 11:50:46,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 447 conditions, 258 events. 83/258 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1136 event pairs, 64 based on Foata normal form. 1/209 useless extension candidates. Maximal degree in co-relation 424. Up to 168 conditions per place. [2023-11-26 11:50:46,445 INFO L140 encePairwiseOnDemand]: 36/39 looper letters, 21 selfloop transitions, 4 changer transitions 0/38 dead transitions. [2023-11-26 11:50:46,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 38 transitions, 154 flow [2023-11-26 11:50:46,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:50:46,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:50:46,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 66 transitions. [2023-11-26 11:50:46,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5641025641025641 [2023-11-26 11:50:46,447 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 66 transitions. [2023-11-26 11:50:46,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 66 transitions. [2023-11-26 11:50:46,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:50:46,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 66 transitions. [2023-11-26 11:50:46,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:46,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:46,449 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:46,450 INFO L175 Difference]: Start difference. First operand has 46 places, 39 transitions, 108 flow. Second operand 3 states and 66 transitions. [2023-11-26 11:50:46,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 38 transitions, 154 flow [2023-11-26 11:50:46,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 38 transitions, 132 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-11-26 11:50:46,452 INFO L231 Difference]: Finished difference. Result has 41 places, 38 transitions, 90 flow [2023-11-26 11:50:46,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=41, PETRI_TRANSITIONS=38} [2023-11-26 11:50:46,453 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2023-11-26 11:50:46,453 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 38 transitions, 90 flow [2023-11-26 11:50:46,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:46,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:50:46,454 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:46,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 11:50:46,454 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-26 11:50:46,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:46,455 INFO L85 PathProgramCache]: Analyzing trace with hash -328619715, now seen corresponding path program 1 times [2023-11-26 11:50:46,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:46,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292910664] [2023-11-26 11:50:46,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:46,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:46,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:46,593 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:50:46,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:46,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292910664] [2023-11-26 11:50:46,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292910664] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:50:46,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019782936] [2023-11-26 11:50:46,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:46,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:50:46,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1015eb-5fda-4107-a1e2-c7f8a31897d9/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:50:46,596 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1015eb-5fda-4107-a1e2-c7f8a31897d9/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:50:46,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1015eb-5fda-4107-a1e2-c7f8a31897d9/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 11:50:46,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:46,702 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:50:46,703 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:46,736 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:50:46,736 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:50:46,775 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:50:46,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2019782936] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:50:46,776 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:50:46,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-11-26 11:50:46,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317320020] [2023-11-26 11:50:46,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:50:46,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 11:50:46,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:46,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 11:50:46,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:50:46,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2023-11-26 11:50:46,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 38 transitions, 90 flow. Second operand has 10 states, 10 states have (on average 15.6) internal successors, (156), 10 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:46,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:50:46,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2023-11-26 11:50:46,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:50:47,010 INFO L124 PetriNetUnfolderBase]: 83/262 cut-off events. [2023-11-26 11:50:47,011 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-26 11:50:47,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 450 conditions, 262 events. 83/262 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1133 event pairs, 64 based on Foata normal form. 2/215 useless extension candidates. Maximal degree in co-relation 417. Up to 166 conditions per place. [2023-11-26 11:50:47,015 INFO L140 encePairwiseOnDemand]: 35/39 looper letters, 21 selfloop transitions, 7 changer transitions 0/41 dead transitions. [2023-11-26 11:50:47,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 41 transitions, 161 flow [2023-11-26 11:50:47,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:50:47,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-26 11:50:47,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2023-11-26 11:50:47,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46886446886446886 [2023-11-26 11:50:47,020 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 128 transitions. [2023-11-26 11:50:47,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 128 transitions. [2023-11-26 11:50:47,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:50:47,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 128 transitions. [2023-11-26 11:50:47,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:47,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 39.0) internal successors, (312), 8 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:47,026 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 39.0) internal successors, (312), 8 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:47,026 INFO L175 Difference]: Start difference. First operand has 41 places, 38 transitions, 90 flow. Second operand 7 states and 128 transitions. [2023-11-26 11:50:47,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 41 transitions, 161 flow [2023-11-26 11:50:47,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 41 transitions, 147 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:50:47,031 INFO L231 Difference]: Finished difference. Result has 47 places, 41 transitions, 116 flow [2023-11-26 11:50:47,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=116, PETRI_PLACES=47, PETRI_TRANSITIONS=41} [2023-11-26 11:50:47,037 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 8 predicate places. [2023-11-26 11:50:47,037 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 41 transitions, 116 flow [2023-11-26 11:50:47,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.6) internal successors, (156), 10 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:47,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:50:47,038 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:47,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1015eb-5fda-4107-a1e2-c7f8a31897d9/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 11:50:47,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1015eb-5fda-4107-a1e2-c7f8a31897d9/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:50:47,254 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-26 11:50:47,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:47,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1263717757, now seen corresponding path program 2 times [2023-11-26 11:50:47,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:47,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531205525] [2023-11-26 11:50:47,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:47,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:47,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:47,511 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:50:47,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:47,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531205525] [2023-11-26 11:50:47,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531205525] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:50:47,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645705759] [2023-11-26 11:50:47,513 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 11:50:47,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:50:47,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1015eb-5fda-4107-a1e2-c7f8a31897d9/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:50:47,514 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1015eb-5fda-4107-a1e2-c7f8a31897d9/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:50:47,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1015eb-5fda-4107-a1e2-c7f8a31897d9/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 11:50:47,632 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-26 11:50:47,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:50:47,633 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-26 11:50:47,635 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:47,680 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2023-11-26 11:50:47,834 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2023-11-26 11:50:47,859 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 11:50:47,860 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:50:47,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645705759] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:47,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:50:47,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 11 [2023-11-26 11:50:47,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578216636] [2023-11-26 11:50:47,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:47,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:50:47,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:47,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:50:47,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-26 11:50:47,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2023-11-26 11:50:47,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 41 transitions, 116 flow. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:47,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:50:47,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2023-11-26 11:50:47,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:50:48,104 INFO L124 PetriNetUnfolderBase]: 158/395 cut-off events. [2023-11-26 11:50:48,104 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-11-26 11:50:48,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 732 conditions, 395 events. 158/395 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1743 event pairs, 24 based on Foata normal form. 14/331 useless extension candidates. Maximal degree in co-relation 694. Up to 198 conditions per place. [2023-11-26 11:50:48,109 INFO L140 encePairwiseOnDemand]: 32/39 looper letters, 57 selfloop transitions, 9 changer transitions 0/77 dead transitions. [2023-11-26 11:50:48,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 77 transitions, 320 flow [2023-11-26 11:50:48,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:50:48,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 11:50:48,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2023-11-26 11:50:48,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6282051282051282 [2023-11-26 11:50:48,112 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 147 transitions. [2023-11-26 11:50:48,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 147 transitions. [2023-11-26 11:50:48,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:50:48,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 147 transitions. [2023-11-26 11:50:48,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 24.5) internal successors, (147), 6 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:48,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:48,117 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:48,117 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 116 flow. Second operand 6 states and 147 transitions. [2023-11-26 11:50:48,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 77 transitions, 320 flow [2023-11-26 11:50:48,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 77 transitions, 316 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:50:48,122 INFO L231 Difference]: Finished difference. Result has 55 places, 50 transitions, 182 flow [2023-11-26 11:50:48,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=182, PETRI_PLACES=55, PETRI_TRANSITIONS=50} [2023-11-26 11:50:48,124 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 16 predicate places. [2023-11-26 11:50:48,125 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 50 transitions, 182 flow [2023-11-26 11:50:48,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:48,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:50:48,125 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:48,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1015eb-5fda-4107-a1e2-c7f8a31897d9/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 11:50:48,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1015eb-5fda-4107-a1e2-c7f8a31897d9/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:50:48,331 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-26 11:50:48,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:48,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1282062173, now seen corresponding path program 1 times [2023-11-26 11:50:48,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:48,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359829424] [2023-11-26 11:50:48,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:48,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:48,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:48,485 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:50:48,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:48,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359829424] [2023-11-26 11:50:48,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359829424] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:50:48,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033477893] [2023-11-26 11:50:48,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:48,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:50:48,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1015eb-5fda-4107-a1e2-c7f8a31897d9/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:50:48,501 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1015eb-5fda-4107-a1e2-c7f8a31897d9/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:50:48,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1015eb-5fda-4107-a1e2-c7f8a31897d9/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 11:50:48,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:48,617 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 11:50:48,619 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:48,669 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:50:48,669 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:50:48,773 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:50:48,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033477893] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:50:48,773 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:50:48,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2023-11-26 11:50:48,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586746229] [2023-11-26 11:50:48,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:50:48,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-26 11:50:48,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:48,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-26 11:50:48,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-11-26 11:50:48,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2023-11-26 11:50:48,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 50 transitions, 182 flow. Second operand has 18 states, 18 states have (on average 15.333333333333334) internal successors, (276), 18 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:48,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:50:48,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2023-11-26 11:50:48,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:50:49,022 INFO L124 PetriNetUnfolderBase]: 127/395 cut-off events. [2023-11-26 11:50:49,022 INFO L125 PetriNetUnfolderBase]: For 155/163 co-relation queries the response was YES. [2023-11-26 11:50:49,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 849 conditions, 395 events. 127/395 cut-off events. For 155/163 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1885 event pairs, 77 based on Foata normal form. 4/353 useless extension candidates. Maximal degree in co-relation 770. Up to 253 conditions per place. [2023-11-26 11:50:49,026 INFO L140 encePairwiseOnDemand]: 35/39 looper letters, 29 selfloop transitions, 15 changer transitions 0/58 dead transitions. [2023-11-26 11:50:49,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 58 transitions, 318 flow [2023-11-26 11:50:49,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-26 11:50:49,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-26 11:50:49,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 250 transitions. [2023-11-26 11:50:49,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42735042735042733 [2023-11-26 11:50:49,029 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 250 transitions. [2023-11-26 11:50:49,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 250 transitions. [2023-11-26 11:50:49,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:50:49,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 250 transitions. [2023-11-26 11:50:49,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 16.666666666666668) internal successors, (250), 15 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:49,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 39.0) internal successors, (624), 16 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:49,033 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 39.0) internal successors, (624), 16 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:49,033 INFO L175 Difference]: Start difference. First operand has 55 places, 50 transitions, 182 flow. Second operand 15 states and 250 transitions. [2023-11-26 11:50:49,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 58 transitions, 318 flow [2023-11-26 11:50:49,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 58 transitions, 318 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 11:50:49,042 INFO L231 Difference]: Finished difference. Result has 73 places, 58 transitions, 279 flow [2023-11-26 11:50:49,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=279, PETRI_PLACES=73, PETRI_TRANSITIONS=58} [2023-11-26 11:50:49,045 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 34 predicate places. [2023-11-26 11:50:49,046 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 58 transitions, 279 flow [2023-11-26 11:50:49,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 15.333333333333334) internal successors, (276), 18 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:49,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:50:49,047 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:49,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1015eb-5fda-4107-a1e2-c7f8a31897d9/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 11:50:49,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1015eb-5fda-4107-a1e2-c7f8a31897d9/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:50:49,255 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-26 11:50:49,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:49,255 INFO L85 PathProgramCache]: Analyzing trace with hash 160198621, now seen corresponding path program 2 times [2023-11-26 11:50:49,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:49,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280042709] [2023-11-26 11:50:49,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:49,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:49,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:49,603 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:50:49,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:49,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280042709] [2023-11-26 11:50:49,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280042709] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:50:49,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642287280] [2023-11-26 11:50:49,606 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 11:50:49,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:50:49,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1015eb-5fda-4107-a1e2-c7f8a31897d9/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:50:49,609 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1015eb-5fda-4107-a1e2-c7f8a31897d9/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:50:49,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1015eb-5fda-4107-a1e2-c7f8a31897d9/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 11:50:49,707 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-26 11:50:49,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:50:49,708 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-26 11:50:49,710 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:49,717 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2023-11-26 11:50:49,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2023-11-26 11:50:49,894 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-26 11:50:49,895 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:50:49,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642287280] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:49,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:50:49,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [16] total 19 [2023-11-26 11:50:49,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812414719] [2023-11-26 11:50:49,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:49,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:50:49,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:49,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:50:49,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2023-11-26 11:50:49,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2023-11-26 11:50:49,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 58 transitions, 279 flow. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:49,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:50:49,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2023-11-26 11:50:49,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:50:50,163 INFO L124 PetriNetUnfolderBase]: 170/459 cut-off events. [2023-11-26 11:50:50,164 INFO L125 PetriNetUnfolderBase]: For 232/245 co-relation queries the response was YES. [2023-11-26 11:50:50,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1053 conditions, 459 events. 170/459 cut-off events. For 232/245 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2137 event pairs, 30 based on Foata normal form. 14/438 useless extension candidates. Maximal degree in co-relation 949. Up to 218 conditions per place. [2023-11-26 11:50:50,169 INFO L140 encePairwiseOnDemand]: 32/39 looper letters, 68 selfloop transitions, 12 changer transitions 0/92 dead transitions. [2023-11-26 11:50:50,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 92 transitions, 545 flow [2023-11-26 11:50:50,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:50:50,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 11:50:50,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2023-11-26 11:50:50,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6282051282051282 [2023-11-26 11:50:50,171 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 147 transitions. [2023-11-26 11:50:50,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 147 transitions. [2023-11-26 11:50:50,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:50:50,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 147 transitions. [2023-11-26 11:50:50,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 24.5) internal successors, (147), 6 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:50,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:50,174 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:50,174 INFO L175 Difference]: Start difference. First operand has 73 places, 58 transitions, 279 flow. Second operand 6 states and 147 transitions. [2023-11-26 11:50:50,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 92 transitions, 545 flow [2023-11-26 11:50:50,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 92 transitions, 535 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-11-26 11:50:50,180 INFO L231 Difference]: Finished difference. Result has 79 places, 65 transitions, 357 flow [2023-11-26 11:50:50,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=357, PETRI_PLACES=79, PETRI_TRANSITIONS=65} [2023-11-26 11:50:50,181 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 40 predicate places. [2023-11-26 11:50:50,182 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 65 transitions, 357 flow [2023-11-26 11:50:50,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:50,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:50:50,182 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:50,193 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1015eb-5fda-4107-a1e2-c7f8a31897d9/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 11:50:50,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1015eb-5fda-4107-a1e2-c7f8a31897d9/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:50:50,389 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-26 11:50:50,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:50,389 INFO L85 PathProgramCache]: Analyzing trace with hash 102513297, now seen corresponding path program 1 times [2023-11-26 11:50:50,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:50,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873845064] [2023-11-26 11:50:50,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:50,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:50,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:50,635 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-26 11:50:50,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:50,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873845064] [2023-11-26 11:50:50,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873845064] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:50,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:50,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:50:50,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545361049] [2023-11-26 11:50:50,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:50,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:50:50,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:50,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:50:50,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:50:50,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2023-11-26 11:50:50,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 65 transitions, 357 flow. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:50,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:50:50,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2023-11-26 11:50:50,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:50:50,864 INFO L124 PetriNetUnfolderBase]: 154/429 cut-off events. [2023-11-26 11:50:50,864 INFO L125 PetriNetUnfolderBase]: For 479/496 co-relation queries the response was YES. [2023-11-26 11:50:50,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1125 conditions, 429 events. 154/429 cut-off events. For 479/496 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1992 event pairs, 37 based on Foata normal form. 18/429 useless extension candidates. Maximal degree in co-relation 1019. Up to 236 conditions per place. [2023-11-26 11:50:50,870 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 66 selfloop transitions, 10 changer transitions 0/88 dead transitions. [2023-11-26 11:50:50,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 88 transitions, 577 flow [2023-11-26 11:50:50,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:50:50,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 11:50:50,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2023-11-26 11:50:50,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6153846153846154 [2023-11-26 11:50:50,872 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 144 transitions. [2023-11-26 11:50:50,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 144 transitions. [2023-11-26 11:50:50,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:50:50,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 144 transitions. [2023-11-26 11:50:50,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:50,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:50,874 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:50,875 INFO L175 Difference]: Start difference. First operand has 79 places, 65 transitions, 357 flow. Second operand 6 states and 144 transitions. [2023-11-26 11:50:50,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 88 transitions, 577 flow [2023-11-26 11:50:50,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 88 transitions, 569 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:50:50,883 INFO L231 Difference]: Finished difference. Result has 83 places, 64 transitions, 365 flow [2023-11-26 11:50:50,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=365, PETRI_PLACES=83, PETRI_TRANSITIONS=64} [2023-11-26 11:50:50,885 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 44 predicate places. [2023-11-26 11:50:50,886 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 64 transitions, 365 flow [2023-11-26 11:50:50,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:50,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:50:50,886 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:50,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 11:50:50,887 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-26 11:50:50,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:50,888 INFO L85 PathProgramCache]: Analyzing trace with hash 671190232, now seen corresponding path program 1 times [2023-11-26 11:50:50,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:50,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322337046] [2023-11-26 11:50:50,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:50,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:50,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:51,098 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-26 11:50:51,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:51,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322337046] [2023-11-26 11:50:51,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322337046] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:51,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:51,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:50:51,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963172208] [2023-11-26 11:50:51,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:51,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:50:51,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:51,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:50:51,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:50:51,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2023-11-26 11:50:51,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 64 transitions, 365 flow. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:51,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:50:51,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2023-11-26 11:50:51,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:50:51,320 INFO L124 PetriNetUnfolderBase]: 156/433 cut-off events. [2023-11-26 11:50:51,320 INFO L125 PetriNetUnfolderBase]: For 491/496 co-relation queries the response was YES. [2023-11-26 11:50:51,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1161 conditions, 433 events. 156/433 cut-off events. For 491/496 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1975 event pairs, 37 based on Foata normal form. 16/431 useless extension candidates. Maximal degree in co-relation 1054. Up to 238 conditions per place. [2023-11-26 11:50:51,326 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 65 selfloop transitions, 11 changer transitions 0/87 dead transitions. [2023-11-26 11:50:51,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 87 transitions, 591 flow [2023-11-26 11:50:51,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:50:51,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 11:50:51,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2023-11-26 11:50:51,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6153846153846154 [2023-11-26 11:50:51,328 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 144 transitions. [2023-11-26 11:50:51,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 144 transitions. [2023-11-26 11:50:51,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:50:51,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 144 transitions. [2023-11-26 11:50:51,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:51,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:51,330 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:51,330 INFO L175 Difference]: Start difference. First operand has 83 places, 64 transitions, 365 flow. Second operand 6 states and 144 transitions. [2023-11-26 11:50:51,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 87 transitions, 591 flow [2023-11-26 11:50:51,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 87 transitions, 556 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-26 11:50:51,340 INFO L231 Difference]: Finished difference. Result has 83 places, 63 transitions, 356 flow [2023-11-26 11:50:51,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=356, PETRI_PLACES=83, PETRI_TRANSITIONS=63} [2023-11-26 11:50:51,342 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 44 predicate places. [2023-11-26 11:50:51,342 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 63 transitions, 356 flow [2023-11-26 11:50:51,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:51,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:50:51,343 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:51,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 11:50:51,343 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-26 11:50:51,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:51,344 INFO L85 PathProgramCache]: Analyzing trace with hash 252128508, now seen corresponding path program 1 times [2023-11-26 11:50:51,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:51,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011427313] [2023-11-26 11:50:51,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:51,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:51,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:51,486 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-26 11:50:51,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:51,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011427313] [2023-11-26 11:50:51,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011427313] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:51,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:51,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:50:51,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988154116] [2023-11-26 11:50:51,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:51,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:50:51,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:51,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:50:51,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:50:51,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2023-11-26 11:50:51,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 63 transitions, 356 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:51,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:50:51,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2023-11-26 11:50:51,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:50:51,682 INFO L124 PetriNetUnfolderBase]: 213/564 cut-off events. [2023-11-26 11:50:51,682 INFO L125 PetriNetUnfolderBase]: For 474/486 co-relation queries the response was YES. [2023-11-26 11:50:51,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1467 conditions, 564 events. 213/564 cut-off events. For 474/486 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2645 event pairs, 68 based on Foata normal form. 24/572 useless extension candidates. Maximal degree in co-relation 1361. Up to 245 conditions per place. [2023-11-26 11:50:51,689 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 80 selfloop transitions, 3 changer transitions 0/94 dead transitions. [2023-11-26 11:50:51,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 94 transitions, 644 flow [2023-11-26 11:50:51,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:50:51,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:50:51,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2023-11-26 11:50:51,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6987179487179487 [2023-11-26 11:50:51,691 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 109 transitions. [2023-11-26 11:50:51,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 109 transitions. [2023-11-26 11:50:51,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:50:51,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 109 transitions. [2023-11-26 11:50:51,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:51,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:51,693 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:51,693 INFO L175 Difference]: Start difference. First operand has 83 places, 63 transitions, 356 flow. Second operand 4 states and 109 transitions. [2023-11-26 11:50:51,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 94 transitions, 644 flow [2023-11-26 11:50:51,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 94 transitions, 611 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-26 11:50:51,701 INFO L231 Difference]: Finished difference. Result has 83 places, 65 transitions, 357 flow [2023-11-26 11:50:51,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=333, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=357, PETRI_PLACES=83, PETRI_TRANSITIONS=65} [2023-11-26 11:50:51,702 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 44 predicate places. [2023-11-26 11:50:51,702 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 65 transitions, 357 flow [2023-11-26 11:50:51,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:51,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:50:51,703 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:51,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-26 11:50:51,703 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-26 11:50:51,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:51,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1939252576, now seen corresponding path program 1 times [2023-11-26 11:50:51,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:51,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977536507] [2023-11-26 11:50:51,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:51,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:51,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:51,785 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-26 11:50:51,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:51,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977536507] [2023-11-26 11:50:51,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977536507] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:51,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:51,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:50:51,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869281052] [2023-11-26 11:50:51,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:51,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:50:51,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:51,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:50:51,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:50:51,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2023-11-26 11:50:51,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 65 transitions, 357 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:51,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:50:51,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2023-11-26 11:50:51,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:50:52,098 INFO L124 PetriNetUnfolderBase]: 318/853 cut-off events. [2023-11-26 11:50:52,099 INFO L125 PetriNetUnfolderBase]: For 631/641 co-relation queries the response was YES. [2023-11-26 11:50:52,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2200 conditions, 853 events. 318/853 cut-off events. For 631/641 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 4398 event pairs, 152 based on Foata normal form. 33/869 useless extension candidates. Maximal degree in co-relation 2093. Up to 394 conditions per place. [2023-11-26 11:50:52,109 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 86 selfloop transitions, 3 changer transitions 0/100 dead transitions. [2023-11-26 11:50:52,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 100 transitions, 683 flow [2023-11-26 11:50:52,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:50:52,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:50:52,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2023-11-26 11:50:52,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6987179487179487 [2023-11-26 11:50:52,111 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 109 transitions. [2023-11-26 11:50:52,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 109 transitions. [2023-11-26 11:50:52,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:50:52,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 109 transitions. [2023-11-26 11:50:52,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:52,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:52,113 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:52,113 INFO L175 Difference]: Start difference. First operand has 83 places, 65 transitions, 357 flow. Second operand 4 states and 109 transitions. [2023-11-26 11:50:52,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 100 transitions, 683 flow [2023-11-26 11:50:52,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 100 transitions, 677 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:50:52,122 INFO L231 Difference]: Finished difference. Result has 87 places, 67 transitions, 379 flow [2023-11-26 11:50:52,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=379, PETRI_PLACES=87, PETRI_TRANSITIONS=67} [2023-11-26 11:50:52,123 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 48 predicate places. [2023-11-26 11:50:52,123 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 67 transitions, 379 flow [2023-11-26 11:50:52,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:52,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:50:52,124 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:52,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-26 11:50:52,124 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-26 11:50:52,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:52,125 INFO L85 PathProgramCache]: Analyzing trace with hash 940845569, now seen corresponding path program 1 times [2023-11-26 11:50:52,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:52,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733992274] [2023-11-26 11:50:52,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:52,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:52,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:52,439 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:50:52,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:52,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733992274] [2023-11-26 11:50:52,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733992274] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:50:52,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927202663] [2023-11-26 11:50:52,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:52,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:50:52,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1015eb-5fda-4107-a1e2-c7f8a31897d9/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:50:52,445 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1015eb-5fda-4107-a1e2-c7f8a31897d9/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:50:52,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1015eb-5fda-4107-a1e2-c7f8a31897d9/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 11:50:52,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:52,570 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-26 11:50:52,572 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:52,654 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:50:52,655 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:50:52,864 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:50:52,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927202663] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:50:52,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:50:52,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 22 [2023-11-26 11:50:52,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466480663] [2023-11-26 11:50:52,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:50:52,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-26 11:50:52,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:52,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-26 11:50:52,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2023-11-26 11:50:52,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2023-11-26 11:50:52,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 67 transitions, 379 flow. Second operand has 23 states, 23 states have (on average 15.521739130434783) internal successors, (357), 23 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:52,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:50:52,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2023-11-26 11:50:52,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:50:53,305 INFO L124 PetriNetUnfolderBase]: 284/820 cut-off events. [2023-11-26 11:50:53,305 INFO L125 PetriNetUnfolderBase]: For 725/745 co-relation queries the response was YES. [2023-11-26 11:50:53,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2249 conditions, 820 events. 284/820 cut-off events. For 725/745 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 4309 event pairs, 187 based on Foata normal form. 3/823 useless extension candidates. Maximal degree in co-relation 2104. Up to 564 conditions per place. [2023-11-26 11:50:53,316 INFO L140 encePairwiseOnDemand]: 35/39 looper letters, 39 selfloop transitions, 21 changer transitions 0/73 dead transitions. [2023-11-26 11:50:53,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 73 transitions, 553 flow [2023-11-26 11:50:53,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-26 11:50:53,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-26 11:50:53,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 339 transitions. [2023-11-26 11:50:53,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4139194139194139 [2023-11-26 11:50:53,319 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 339 transitions. [2023-11-26 11:50:53,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 339 transitions. [2023-11-26 11:50:53,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:50:53,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 339 transitions. [2023-11-26 11:50:53,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 16.142857142857142) internal successors, (339), 21 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:53,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 39.0) internal successors, (858), 22 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:53,325 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 39.0) internal successors, (858), 22 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:53,325 INFO L175 Difference]: Start difference. First operand has 87 places, 67 transitions, 379 flow. Second operand 21 states and 339 transitions. [2023-11-26 11:50:53,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 73 transitions, 553 flow [2023-11-26 11:50:53,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 73 transitions, 551 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:50:53,333 INFO L231 Difference]: Finished difference. Result has 109 places, 73 transitions, 488 flow [2023-11-26 11:50:53,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=488, PETRI_PLACES=109, PETRI_TRANSITIONS=73} [2023-11-26 11:50:53,334 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 70 predicate places. [2023-11-26 11:50:53,335 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 73 transitions, 488 flow [2023-11-26 11:50:53,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 15.521739130434783) internal successors, (357), 23 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:53,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:50:53,336 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:53,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1015eb-5fda-4107-a1e2-c7f8a31897d9/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-26 11:50:53,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1015eb-5fda-4107-a1e2-c7f8a31897d9/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-26 11:50:53,542 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-26 11:50:53,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:53,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1485452491, now seen corresponding path program 2 times [2023-11-26 11:50:53,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:53,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37923403] [2023-11-26 11:50:53,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:53,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:53,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:54,006 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-26 11:50:54,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:54,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37923403] [2023-11-26 11:50:54,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37923403] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:54,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:54,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 11:50:54,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632229807] [2023-11-26 11:50:54,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:54,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:50:54,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:54,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:50:54,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:50:54,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2023-11-26 11:50:54,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 73 transitions, 488 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:54,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:50:54,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2023-11-26 11:50:54,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:50:54,747 INFO L124 PetriNetUnfolderBase]: 512/1260 cut-off events. [2023-11-26 11:50:54,747 INFO L125 PetriNetUnfolderBase]: For 1401/1405 co-relation queries the response was YES. [2023-11-26 11:50:54,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3585 conditions, 1260 events. 512/1260 cut-off events. For 1401/1405 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 7038 event pairs, 147 based on Foata normal form. 22/1280 useless extension candidates. Maximal degree in co-relation 3412. Up to 664 conditions per place. [2023-11-26 11:50:54,762 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 106 selfloop transitions, 36 changer transitions 0/151 dead transitions. [2023-11-26 11:50:54,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 151 transitions, 1133 flow [2023-11-26 11:50:54,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-26 11:50:54,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-26 11:50:54,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 288 transitions. [2023-11-26 11:50:54,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49230769230769234 [2023-11-26 11:50:54,764 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 288 transitions. [2023-11-26 11:50:54,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 288 transitions. [2023-11-26 11:50:54,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:50:54,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 288 transitions. [2023-11-26 11:50:54,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 19.2) internal successors, (288), 15 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:54,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 39.0) internal successors, (624), 16 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:54,768 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 39.0) internal successors, (624), 16 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:54,768 INFO L175 Difference]: Start difference. First operand has 109 places, 73 transitions, 488 flow. Second operand 15 states and 288 transitions. [2023-11-26 11:50:54,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 151 transitions, 1133 flow [2023-11-26 11:50:54,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 151 transitions, 1090 flow, removed 1 selfloop flow, removed 13 redundant places. [2023-11-26 11:50:54,781 INFO L231 Difference]: Finished difference. Result has 116 places, 98 transitions, 750 flow [2023-11-26 11:50:54,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=750, PETRI_PLACES=116, PETRI_TRANSITIONS=98} [2023-11-26 11:50:54,783 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 77 predicate places. [2023-11-26 11:50:54,783 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 98 transitions, 750 flow [2023-11-26 11:50:54,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:54,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:50:54,784 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:54,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-26 11:50:54,784 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-26 11:50:54,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:54,785 INFO L85 PathProgramCache]: Analyzing trace with hash 348839251, now seen corresponding path program 3 times [2023-11-26 11:50:54,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:54,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563675194] [2023-11-26 11:50:54,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:54,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:54,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:55,284 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-26 11:50:55,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:55,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563675194] [2023-11-26 11:50:55,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563675194] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:55,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:55,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 11:50:55,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160259594] [2023-11-26 11:50:55,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:55,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:50:55,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:55,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:50:55,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:50:55,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2023-11-26 11:50:55,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 98 transitions, 750 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:55,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:50:55,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2023-11-26 11:50:55,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:50:56,092 INFO L124 PetriNetUnfolderBase]: 605/1462 cut-off events. [2023-11-26 11:50:56,092 INFO L125 PetriNetUnfolderBase]: For 3590/3592 co-relation queries the response was YES. [2023-11-26 11:50:56,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4779 conditions, 1462 events. 605/1462 cut-off events. For 3590/3592 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 8510 event pairs, 183 based on Foata normal form. 20/1479 useless extension candidates. Maximal degree in co-relation 4620. Up to 677 conditions per place. [2023-11-26 11:50:56,110 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 104 selfloop transitions, 50 changer transitions 0/163 dead transitions. [2023-11-26 11:50:56,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 163 transitions, 1378 flow [2023-11-26 11:50:56,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-26 11:50:56,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-26 11:50:56,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 296 transitions. [2023-11-26 11:50:56,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47435897435897434 [2023-11-26 11:50:56,113 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 296 transitions. [2023-11-26 11:50:56,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 296 transitions. [2023-11-26 11:50:56,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:50:56,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 296 transitions. [2023-11-26 11:50:56,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 18.5) internal successors, (296), 16 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:56,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 39.0) internal successors, (663), 17 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:56,117 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 39.0) internal successors, (663), 17 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:56,117 INFO L175 Difference]: Start difference. First operand has 116 places, 98 transitions, 750 flow. Second operand 16 states and 296 transitions. [2023-11-26 11:50:56,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 163 transitions, 1378 flow [2023-11-26 11:50:56,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 163 transitions, 1335 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-11-26 11:50:56,140 INFO L231 Difference]: Finished difference. Result has 131 places, 112 transitions, 997 flow [2023-11-26 11:50:56,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=713, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=997, PETRI_PLACES=131, PETRI_TRANSITIONS=112} [2023-11-26 11:50:56,141 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 92 predicate places. [2023-11-26 11:50:56,141 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 112 transitions, 997 flow [2023-11-26 11:50:56,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:56,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:50:56,142 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:56,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-26 11:50:56,142 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-26 11:50:56,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:56,143 INFO L85 PathProgramCache]: Analyzing trace with hash -361064372, now seen corresponding path program 1 times [2023-11-26 11:50:56,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:56,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221726011] [2023-11-26 11:50:56,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:56,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:56,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:56,553 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-26 11:50:56,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:56,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221726011] [2023-11-26 11:50:56,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221726011] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:56,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:56,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 11:50:56,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917107735] [2023-11-26 11:50:56,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:56,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:50:56,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:56,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:50:56,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:50:56,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2023-11-26 11:50:56,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 112 transitions, 997 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:56,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:50:56,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2023-11-26 11:50:56,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:50:57,314 INFO L124 PetriNetUnfolderBase]: 701/1654 cut-off events. [2023-11-26 11:50:57,314 INFO L125 PetriNetUnfolderBase]: For 6982/6990 co-relation queries the response was YES. [2023-11-26 11:50:57,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6151 conditions, 1654 events. 701/1654 cut-off events. For 6982/6990 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 9912 event pairs, 187 based on Foata normal form. 20/1673 useless extension candidates. Maximal degree in co-relation 5988. Up to 965 conditions per place. [2023-11-26 11:50:57,338 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 140 selfloop transitions, 47 changer transitions 0/196 dead transitions. [2023-11-26 11:50:57,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 196 transitions, 2001 flow [2023-11-26 11:50:57,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-26 11:50:57,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-26 11:50:57,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 245 transitions. [2023-11-26 11:50:57,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5235042735042735 [2023-11-26 11:50:57,341 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 245 transitions. [2023-11-26 11:50:57,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 245 transitions. [2023-11-26 11:50:57,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:50:57,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 245 transitions. [2023-11-26 11:50:57,345 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 20.416666666666668) internal successors, (245), 12 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:57,348 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 39.0) internal successors, (507), 13 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:57,348 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 39.0) internal successors, (507), 13 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:57,349 INFO L175 Difference]: Start difference. First operand has 131 places, 112 transitions, 997 flow. Second operand 12 states and 245 transitions. [2023-11-26 11:50:57,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 196 transitions, 2001 flow [2023-11-26 11:50:57,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 196 transitions, 1935 flow, removed 14 selfloop flow, removed 6 redundant places. [2023-11-26 11:50:57,389 INFO L231 Difference]: Finished difference. Result has 140 places, 129 transitions, 1282 flow [2023-11-26 11:50:57,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=941, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1282, PETRI_PLACES=140, PETRI_TRANSITIONS=129} [2023-11-26 11:50:57,391 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 101 predicate places. [2023-11-26 11:50:57,391 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 129 transitions, 1282 flow [2023-11-26 11:50:57,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:57,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:50:57,392 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:57,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-26 11:50:57,392 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-26 11:50:57,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:57,393 INFO L85 PathProgramCache]: Analyzing trace with hash 379139581, now seen corresponding path program 4 times [2023-11-26 11:50:57,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:57,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885200729] [2023-11-26 11:50:57,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:57,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:57,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:57,844 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-26 11:50:57,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:57,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885200729] [2023-11-26 11:50:57,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885200729] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:57,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:57,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 11:50:57,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640136348] [2023-11-26 11:50:57,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:57,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:50:57,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:57,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:50:57,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:50:57,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2023-11-26 11:50:57,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 129 transitions, 1282 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:57,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:50:57,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2023-11-26 11:50:57,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:50:58,778 INFO L124 PetriNetUnfolderBase]: 905/2097 cut-off events. [2023-11-26 11:50:58,778 INFO L125 PetriNetUnfolderBase]: For 12130/12142 co-relation queries the response was YES. [2023-11-26 11:50:58,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8443 conditions, 2097 events. 905/2097 cut-off events. For 12130/12142 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 13196 event pairs, 92 based on Foata normal form. 48/2145 useless extension candidates. Maximal degree in co-relation 8275. Up to 763 conditions per place. [2023-11-26 11:50:58,847 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 144 selfloop transitions, 87 changer transitions 0/240 dead transitions. [2023-11-26 11:50:58,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 240 transitions, 2519 flow [2023-11-26 11:50:58,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-26 11:50:58,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-26 11:50:58,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 320 transitions. [2023-11-26 11:50:58,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5128205128205128 [2023-11-26 11:50:58,850 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 320 transitions. [2023-11-26 11:50:58,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 320 transitions. [2023-11-26 11:50:58,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:50:58,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 320 transitions. [2023-11-26 11:50:58,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 20.0) internal successors, (320), 16 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:58,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 39.0) internal successors, (663), 17 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:58,854 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 39.0) internal successors, (663), 17 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:58,854 INFO L175 Difference]: Start difference. First operand has 140 places, 129 transitions, 1282 flow. Second operand 16 states and 320 transitions. [2023-11-26 11:50:58,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 240 transitions, 2519 flow [2023-11-26 11:50:58,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 240 transitions, 2427 flow, removed 25 selfloop flow, removed 7 redundant places. [2023-11-26 11:50:58,910 INFO L231 Difference]: Finished difference. Result has 154 places, 157 transitions, 1876 flow [2023-11-26 11:50:58,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1216, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1876, PETRI_PLACES=154, PETRI_TRANSITIONS=157} [2023-11-26 11:50:58,911 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 115 predicate places. [2023-11-26 11:50:58,911 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 157 transitions, 1876 flow [2023-11-26 11:50:58,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:58,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:50:58,911 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:58,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-26 11:50:58,912 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-26 11:50:58,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:58,912 INFO L85 PathProgramCache]: Analyzing trace with hash 216909068, now seen corresponding path program 2 times [2023-11-26 11:50:58,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:58,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994335882] [2023-11-26 11:50:58,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:58,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:58,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:59,361 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-26 11:50:59,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:59,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994335882] [2023-11-26 11:50:59,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994335882] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:59,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:59,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 11:50:59,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269699472] [2023-11-26 11:50:59,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:59,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:50:59,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:59,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:50:59,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:50:59,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2023-11-26 11:50:59,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 157 transitions, 1876 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:59,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:50:59,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2023-11-26 11:50:59,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:51:00,407 INFO L124 PetriNetUnfolderBase]: 1037/2326 cut-off events. [2023-11-26 11:51:00,407 INFO L125 PetriNetUnfolderBase]: For 18565/18587 co-relation queries the response was YES. [2023-11-26 11:51:00,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10637 conditions, 2326 events. 1037/2326 cut-off events. For 18565/18587 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 14840 event pairs, 278 based on Foata normal form. 21/2346 useless extension candidates. Maximal degree in co-relation 10464. Up to 1448 conditions per place. [2023-11-26 11:51:00,444 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 183 selfloop transitions, 73 changer transitions 0/265 dead transitions. [2023-11-26 11:51:00,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 265 transitions, 3515 flow [2023-11-26 11:51:00,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-26 11:51:00,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-26 11:51:00,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 287 transitions. [2023-11-26 11:51:00,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4905982905982906 [2023-11-26 11:51:00,447 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 287 transitions. [2023-11-26 11:51:00,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 287 transitions. [2023-11-26 11:51:00,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:51:00,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 287 transitions. [2023-11-26 11:51:00,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 19.133333333333333) internal successors, (287), 15 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:00,450 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 39.0) internal successors, (624), 16 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:00,450 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 39.0) internal successors, (624), 16 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:00,450 INFO L175 Difference]: Start difference. First operand has 154 places, 157 transitions, 1876 flow. Second operand 15 states and 287 transitions. [2023-11-26 11:51:00,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 265 transitions, 3515 flow [2023-11-26 11:51:00,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 265 transitions, 3350 flow, removed 56 selfloop flow, removed 9 redundant places. [2023-11-26 11:51:00,563 INFO L231 Difference]: Finished difference. Result has 163 places, 185 transitions, 2426 flow [2023-11-26 11:51:00,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1762, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2426, PETRI_PLACES=163, PETRI_TRANSITIONS=185} [2023-11-26 11:51:00,564 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 124 predicate places. [2023-11-26 11:51:00,565 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 185 transitions, 2426 flow [2023-11-26 11:51:00,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:00,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:51:00,565 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:00,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-26 11:51:00,566 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-26 11:51:00,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:00,566 INFO L85 PathProgramCache]: Analyzing trace with hash 358410448, now seen corresponding path program 3 times [2023-11-26 11:51:00,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:00,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427686709] [2023-11-26 11:51:00,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:00,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:00,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:00,951 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-26 11:51:00,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:00,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427686709] [2023-11-26 11:51:00,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427686709] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:00,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:51:00,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 11:51:00,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377285469] [2023-11-26 11:51:00,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:00,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:51:00,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:00,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:51:00,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:51:00,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2023-11-26 11:51:00,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 185 transitions, 2426 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:00,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:51:00,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2023-11-26 11:51:00,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:51:02,071 INFO L124 PetriNetUnfolderBase]: 1127/2526 cut-off events. [2023-11-26 11:51:02,071 INFO L125 PetriNetUnfolderBase]: For 24423/24442 co-relation queries the response was YES. [2023-11-26 11:51:02,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12258 conditions, 2526 events. 1127/2526 cut-off events. For 24423/24442 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 16536 event pairs, 299 based on Foata normal form. 21/2545 useless extension candidates. Maximal degree in co-relation 12080. Up to 1348 conditions per place. [2023-11-26 11:51:02,116 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 167 selfloop transitions, 104 changer transitions 0/280 dead transitions. [2023-11-26 11:51:02,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 280 transitions, 3909 flow [2023-11-26 11:51:02,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-26 11:51:02,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-26 11:51:02,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 295 transitions. [2023-11-26 11:51:02,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47275641025641024 [2023-11-26 11:51:02,119 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 295 transitions. [2023-11-26 11:51:02,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 295 transitions. [2023-11-26 11:51:02,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:51:02,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 295 transitions. [2023-11-26 11:51:02,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 18.4375) internal successors, (295), 16 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:02,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 39.0) internal successors, (663), 17 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:02,122 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 39.0) internal successors, (663), 17 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:02,122 INFO L175 Difference]: Start difference. First operand has 163 places, 185 transitions, 2426 flow. Second operand 16 states and 295 transitions. [2023-11-26 11:51:02,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 280 transitions, 3909 flow [2023-11-26 11:51:02,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 280 transitions, 3806 flow, removed 9 selfloop flow, removed 9 redundant places. [2023-11-26 11:51:02,258 INFO L231 Difference]: Finished difference. Result has 173 places, 200 transitions, 2945 flow [2023-11-26 11:51:02,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2327, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2945, PETRI_PLACES=173, PETRI_TRANSITIONS=200} [2023-11-26 11:51:02,259 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 134 predicate places. [2023-11-26 11:51:02,259 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 200 transitions, 2945 flow [2023-11-26 11:51:02,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:02,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:51:02,259 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:02,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-26 11:51:02,260 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-26 11:51:02,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:02,260 INFO L85 PathProgramCache]: Analyzing trace with hash 155447248, now seen corresponding path program 4 times [2023-11-26 11:51:02,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:02,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665634097] [2023-11-26 11:51:02,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:02,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:02,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:02,628 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-26 11:51:02,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:02,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665634097] [2023-11-26 11:51:02,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665634097] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:02,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:51:02,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 11:51:02,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375387447] [2023-11-26 11:51:02,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:02,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:51:02,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:02,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:51:02,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:51:02,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2023-11-26 11:51:02,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 200 transitions, 2945 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:02,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:51:02,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2023-11-26 11:51:02,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:51:03,882 INFO L124 PetriNetUnfolderBase]: 1236/2792 cut-off events. [2023-11-26 11:51:03,883 INFO L125 PetriNetUnfolderBase]: For 33649/33653 co-relation queries the response was YES. [2023-11-26 11:51:03,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14254 conditions, 2792 events. 1236/2792 cut-off events. For 33649/33653 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 18599 event pairs, 160 based on Foata normal form. 54/2846 useless extension candidates. Maximal degree in co-relation 14072. Up to 1067 conditions per place. [2023-11-26 11:51:03,927 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 168 selfloop transitions, 144 changer transitions 0/321 dead transitions. [2023-11-26 11:51:03,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 321 transitions, 4733 flow [2023-11-26 11:51:03,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-26 11:51:03,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-26 11:51:03,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 317 transitions. [2023-11-26 11:51:03,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5080128205128205 [2023-11-26 11:51:03,929 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 317 transitions. [2023-11-26 11:51:03,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 317 transitions. [2023-11-26 11:51:03,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:51:03,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 317 transitions. [2023-11-26 11:51:03,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 19.8125) internal successors, (317), 16 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:03,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 39.0) internal successors, (663), 17 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:03,933 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 39.0) internal successors, (663), 17 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:03,934 INFO L175 Difference]: Start difference. First operand has 173 places, 200 transitions, 2945 flow. Second operand 16 states and 317 transitions. [2023-11-26 11:51:03,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 321 transitions, 4733 flow [2023-11-26 11:51:04,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 321 transitions, 4639 flow, removed 9 selfloop flow, removed 12 redundant places. [2023-11-26 11:51:04,095 INFO L231 Difference]: Finished difference. Result has 182 places, 226 transitions, 3829 flow [2023-11-26 11:51:04,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2851, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3829, PETRI_PLACES=182, PETRI_TRANSITIONS=226} [2023-11-26 11:51:04,097 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 143 predicate places. [2023-11-26 11:51:04,097 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 226 transitions, 3829 flow [2023-11-26 11:51:04,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:04,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:51:04,097 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:04,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-26 11:51:04,098 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-26 11:51:04,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:04,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1818779333, now seen corresponding path program 1 times [2023-11-26 11:51:04,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:04,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258470810] [2023-11-26 11:51:04,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:04,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:04,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:04,435 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-26 11:51:04,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:04,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258470810] [2023-11-26 11:51:04,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258470810] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:04,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:51:04,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 11:51:04,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087219109] [2023-11-26 11:51:04,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:04,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:51:04,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:04,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:51:04,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:51:04,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2023-11-26 11:51:04,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 226 transitions, 3829 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:04,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:51:04,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2023-11-26 11:51:04,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:51:05,709 INFO L124 PetriNetUnfolderBase]: 1215/2697 cut-off events. [2023-11-26 11:51:05,710 INFO L125 PetriNetUnfolderBase]: For 41767/41808 co-relation queries the response was YES. [2023-11-26 11:51:05,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15385 conditions, 2697 events. 1215/2697 cut-off events. For 41767/41808 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 17684 event pairs, 405 based on Foata normal form. 21/2716 useless extension candidates. Maximal degree in co-relation 15196. Up to 2065 conditions per place. [2023-11-26 11:51:05,754 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 230 selfloop transitions, 52 changer transitions 0/291 dead transitions. [2023-11-26 11:51:05,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 291 transitions, 5095 flow [2023-11-26 11:51:05,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-26 11:51:05,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-26 11:51:05,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 281 transitions. [2023-11-26 11:51:05,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48034188034188036 [2023-11-26 11:51:05,756 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 281 transitions. [2023-11-26 11:51:05,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 281 transitions. [2023-11-26 11:51:05,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:51:05,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 281 transitions. [2023-11-26 11:51:05,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 18.733333333333334) internal successors, (281), 15 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:05,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 39.0) internal successors, (624), 16 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:05,759 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 39.0) internal successors, (624), 16 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:05,760 INFO L175 Difference]: Start difference. First operand has 182 places, 226 transitions, 3829 flow. Second operand 15 states and 281 transitions. [2023-11-26 11:51:05,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 291 transitions, 5095 flow [2023-11-26 11:51:05,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 291 transitions, 4915 flow, removed 54 selfloop flow, removed 10 redundant places. [2023-11-26 11:51:06,006 INFO L231 Difference]: Finished difference. Result has 187 places, 226 transitions, 3803 flow [2023-11-26 11:51:06,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3671, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3803, PETRI_PLACES=187, PETRI_TRANSITIONS=226} [2023-11-26 11:51:06,007 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 148 predicate places. [2023-11-26 11:51:06,007 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 226 transitions, 3803 flow [2023-11-26 11:51:06,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:06,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:51:06,008 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:06,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-26 11:51:06,008 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-26 11:51:06,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:06,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1691906633, now seen corresponding path program 1 times [2023-11-26 11:51:06,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:06,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938471062] [2023-11-26 11:51:06,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:06,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:06,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:06,466 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-26 11:51:06,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:06,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938471062] [2023-11-26 11:51:06,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938471062] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:06,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:51:06,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 11:51:06,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716616368] [2023-11-26 11:51:06,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:06,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:51:06,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:06,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:51:06,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:51:06,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2023-11-26 11:51:06,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 226 transitions, 3803 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:06,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:51:06,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2023-11-26 11:51:06,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:51:07,728 INFO L124 PetriNetUnfolderBase]: 1194/2684 cut-off events. [2023-11-26 11:51:07,729 INFO L125 PetriNetUnfolderBase]: For 39667/39698 co-relation queries the response was YES. [2023-11-26 11:51:07,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14899 conditions, 2684 events. 1194/2684 cut-off events. For 39667/39698 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 17673 event pairs, 406 based on Foata normal form. 21/2703 useless extension candidates. Maximal degree in co-relation 14709. Up to 2038 conditions per place. [2023-11-26 11:51:07,770 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 212 selfloop transitions, 61 changer transitions 0/282 dead transitions. [2023-11-26 11:51:07,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 282 transitions, 4826 flow [2023-11-26 11:51:07,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-26 11:51:07,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-26 11:51:07,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 238 transitions. [2023-11-26 11:51:07,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5085470085470085 [2023-11-26 11:51:07,773 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 238 transitions. [2023-11-26 11:51:07,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 238 transitions. [2023-11-26 11:51:07,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:51:07,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 238 transitions. [2023-11-26 11:51:07,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 19.833333333333332) internal successors, (238), 12 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:07,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 39.0) internal successors, (507), 13 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:07,781 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 39.0) internal successors, (507), 13 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:07,782 INFO L175 Difference]: Start difference. First operand has 187 places, 226 transitions, 3803 flow. Second operand 12 states and 238 transitions. [2023-11-26 11:51:07,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 282 transitions, 4826 flow [2023-11-26 11:51:08,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 282 transitions, 4720 flow, removed 5 selfloop flow, removed 13 redundant places. [2023-11-26 11:51:08,013 INFO L231 Difference]: Finished difference. Result has 185 places, 225 transitions, 3812 flow [2023-11-26 11:51:08,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3690, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3812, PETRI_PLACES=185, PETRI_TRANSITIONS=225} [2023-11-26 11:51:08,014 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 146 predicate places. [2023-11-26 11:51:08,014 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 225 transitions, 3812 flow [2023-11-26 11:51:08,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:08,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:51:08,015 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:08,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-26 11:51:08,015 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-26 11:51:08,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:08,016 INFO L85 PathProgramCache]: Analyzing trace with hash -2070884869, now seen corresponding path program 2 times [2023-11-26 11:51:08,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:08,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729041129] [2023-11-26 11:51:08,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:08,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:08,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:08,383 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-26 11:51:08,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:08,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729041129] [2023-11-26 11:51:08,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729041129] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:08,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:51:08,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 11:51:08,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830436356] [2023-11-26 11:51:08,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:08,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:51:08,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:08,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:51:08,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:51:08,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2023-11-26 11:51:08,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 225 transitions, 3812 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:08,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:51:08,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2023-11-26 11:51:08,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:51:09,498 INFO L124 PetriNetUnfolderBase]: 1173/2641 cut-off events. [2023-11-26 11:51:09,498 INFO L125 PetriNetUnfolderBase]: For 38686/38726 co-relation queries the response was YES. [2023-11-26 11:51:09,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14597 conditions, 2641 events. 1173/2641 cut-off events. For 38686/38726 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 17382 event pairs, 378 based on Foata normal form. 21/2660 useless extension candidates. Maximal degree in co-relation 14408. Up to 1947 conditions per place. [2023-11-26 11:51:09,542 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 208 selfloop transitions, 66 changer transitions 0/283 dead transitions. [2023-11-26 11:51:09,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 283 transitions, 4934 flow [2023-11-26 11:51:09,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-26 11:51:09,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-26 11:51:09,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 289 transitions. [2023-11-26 11:51:09,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46314102564102566 [2023-11-26 11:51:09,545 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 289 transitions. [2023-11-26 11:51:09,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 289 transitions. [2023-11-26 11:51:09,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:51:09,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 289 transitions. [2023-11-26 11:51:09,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 18.0625) internal successors, (289), 16 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:09,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 39.0) internal successors, (663), 17 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:09,549 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 39.0) internal successors, (663), 17 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:09,549 INFO L175 Difference]: Start difference. First operand has 185 places, 225 transitions, 3812 flow. Second operand 16 states and 289 transitions. [2023-11-26 11:51:09,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 283 transitions, 4934 flow [2023-11-26 11:51:09,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 283 transitions, 4831 flow, removed 3 selfloop flow, removed 10 redundant places. [2023-11-26 11:51:09,764 INFO L231 Difference]: Finished difference. Result has 190 places, 224 transitions, 3833 flow [2023-11-26 11:51:09,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3701, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3833, PETRI_PLACES=190, PETRI_TRANSITIONS=224} [2023-11-26 11:51:09,765 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 151 predicate places. [2023-11-26 11:51:09,765 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 224 transitions, 3833 flow [2023-11-26 11:51:09,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:09,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:51:09,766 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:09,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-26 11:51:09,766 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-26 11:51:09,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:09,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1131574639, now seen corresponding path program 3 times [2023-11-26 11:51:09,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:09,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835962661] [2023-11-26 11:51:09,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:09,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:09,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:10,089 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-26 11:51:10,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:10,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835962661] [2023-11-26 11:51:10,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835962661] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:10,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:51:10,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 11:51:10,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542815993] [2023-11-26 11:51:10,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:10,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:51:10,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:10,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:51:10,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:51:10,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2023-11-26 11:51:10,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 224 transitions, 3833 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:10,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:51:10,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2023-11-26 11:51:10,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:51:11,125 INFO L124 PetriNetUnfolderBase]: 1152/2604 cut-off events. [2023-11-26 11:51:11,125 INFO L125 PetriNetUnfolderBase]: For 38152/38189 co-relation queries the response was YES. [2023-11-26 11:51:11,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14409 conditions, 2604 events. 1152/2604 cut-off events. For 38152/38189 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 17182 event pairs, 324 based on Foata normal form. 21/2624 useless extension candidates. Maximal degree in co-relation 14221. Up to 1826 conditions per place. [2023-11-26 11:51:11,161 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 214 selfloop transitions, 77 changer transitions 0/300 dead transitions. [2023-11-26 11:51:11,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 300 transitions, 5201 flow [2023-11-26 11:51:11,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-26 11:51:11,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-26 11:51:11,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 283 transitions. [2023-11-26 11:51:11,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48376068376068376 [2023-11-26 11:51:11,163 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 283 transitions. [2023-11-26 11:51:11,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 283 transitions. [2023-11-26 11:51:11,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:51:11,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 283 transitions. [2023-11-26 11:51:11,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 18.866666666666667) internal successors, (283), 15 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:11,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 39.0) internal successors, (624), 16 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:11,166 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 39.0) internal successors, (624), 16 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:11,167 INFO L175 Difference]: Start difference. First operand has 190 places, 224 transitions, 3833 flow. Second operand 15 states and 283 transitions. [2023-11-26 11:51:11,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 300 transitions, 5201 flow [2023-11-26 11:51:11,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 300 transitions, 5092 flow, removed 0 selfloop flow, removed 13 redundant places. [2023-11-26 11:51:11,369 INFO L231 Difference]: Finished difference. Result has 195 places, 234 transitions, 4119 flow [2023-11-26 11:51:11,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3724, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4119, PETRI_PLACES=195, PETRI_TRANSITIONS=234} [2023-11-26 11:51:11,371 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 156 predicate places. [2023-11-26 11:51:11,371 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 234 transitions, 4119 flow [2023-11-26 11:51:11,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:11,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:51:11,371 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:11,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-26 11:51:11,372 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-26 11:51:11,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:11,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1865753207, now seen corresponding path program 2 times [2023-11-26 11:51:11,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:11,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506183631] [2023-11-26 11:51:11,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:11,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:11,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:11,689 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-26 11:51:11,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:11,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506183631] [2023-11-26 11:51:11,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506183631] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:11,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:51:11,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 11:51:11,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131849687] [2023-11-26 11:51:11,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:11,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:51:11,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:11,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:51:11,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:51:11,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2023-11-26 11:51:11,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 234 transitions, 4119 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:11,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:51:11,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2023-11-26 11:51:11,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:51:12,668 INFO L124 PetriNetUnfolderBase]: 1131/2585 cut-off events. [2023-11-26 11:51:12,669 INFO L125 PetriNetUnfolderBase]: For 40235/40266 co-relation queries the response was YES. [2023-11-26 11:51:12,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14704 conditions, 2585 events. 1131/2585 cut-off events. For 40235/40266 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 17058 event pairs, 377 based on Foata normal form. 21/2604 useless extension candidates. Maximal degree in co-relation 14512. Up to 1950 conditions per place. [2023-11-26 11:51:12,708 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 222 selfloop transitions, 61 changer transitions 0/292 dead transitions. [2023-11-26 11:51:12,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 292 transitions, 5213 flow [2023-11-26 11:51:12,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-26 11:51:12,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-26 11:51:12,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 281 transitions. [2023-11-26 11:51:12,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48034188034188036 [2023-11-26 11:51:12,710 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 281 transitions. [2023-11-26 11:51:12,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 281 transitions. [2023-11-26 11:51:12,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:51:12,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 281 transitions. [2023-11-26 11:51:12,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 18.733333333333334) internal successors, (281), 15 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:12,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 39.0) internal successors, (624), 16 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:12,713 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 39.0) internal successors, (624), 16 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:12,714 INFO L175 Difference]: Start difference. First operand has 195 places, 234 transitions, 4119 flow. Second operand 15 states and 281 transitions. [2023-11-26 11:51:12,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 292 transitions, 5213 flow [2023-11-26 11:51:12,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 292 transitions, 5091 flow, removed 5 selfloop flow, removed 11 redundant places. [2023-11-26 11:51:12,971 INFO L231 Difference]: Finished difference. Result has 198 places, 233 transitions, 4115 flow [2023-11-26 11:51:12,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3993, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4115, PETRI_PLACES=198, PETRI_TRANSITIONS=233} [2023-11-26 11:51:12,972 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 159 predicate places. [2023-11-26 11:51:12,972 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 233 transitions, 4115 flow [2023-11-26 11:51:12,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:12,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:51:12,973 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:12,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-26 11:51:12,973 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-26 11:51:12,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:12,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1774177723, now seen corresponding path program 3 times [2023-11-26 11:51:12,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:12,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369643093] [2023-11-26 11:51:12,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:12,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:12,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:13,281 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-26 11:51:13,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:13,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369643093] [2023-11-26 11:51:13,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369643093] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:13,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:51:13,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 11:51:13,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346713308] [2023-11-26 11:51:13,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:13,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:51:13,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:13,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:51:13,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:51:13,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2023-11-26 11:51:13,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 233 transitions, 4115 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:13,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:51:13,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2023-11-26 11:51:13,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:51:14,275 INFO L124 PetriNetUnfolderBase]: 1110/2578 cut-off events. [2023-11-26 11:51:14,275 INFO L125 PetriNetUnfolderBase]: For 40090/40115 co-relation queries the response was YES. [2023-11-26 11:51:14,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14497 conditions, 2578 events. 1110/2578 cut-off events. For 40090/40115 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 17200 event pairs, 349 based on Foata normal form. 21/2597 useless extension candidates. Maximal degree in co-relation 14306. Up to 1806 conditions per place. [2023-11-26 11:51:14,319 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 189 selfloop transitions, 87 changer transitions 0/285 dead transitions. [2023-11-26 11:51:14,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 285 transitions, 5107 flow [2023-11-26 11:51:14,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-26 11:51:14,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-26 11:51:14,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 289 transitions. [2023-11-26 11:51:14,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46314102564102566 [2023-11-26 11:51:14,325 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 289 transitions. [2023-11-26 11:51:14,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 289 transitions. [2023-11-26 11:51:14,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:51:14,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 289 transitions. [2023-11-26 11:51:14,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 18.0625) internal successors, (289), 16 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:14,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 39.0) internal successors, (663), 17 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:14,335 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 39.0) internal successors, (663), 17 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:14,335 INFO L175 Difference]: Start difference. First operand has 198 places, 233 transitions, 4115 flow. Second operand 16 states and 289 transitions. [2023-11-26 11:51:14,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 285 transitions, 5107 flow [2023-11-26 11:51:14,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 285 transitions, 5001 flow, removed 2 selfloop flow, removed 13 redundant places. [2023-11-26 11:51:14,571 INFO L231 Difference]: Finished difference. Result has 200 places, 232 transitions, 4172 flow [2023-11-26 11:51:14,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3998, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4172, PETRI_PLACES=200, PETRI_TRANSITIONS=232} [2023-11-26 11:51:14,626 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 161 predicate places. [2023-11-26 11:51:14,626 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 232 transitions, 4172 flow [2023-11-26 11:51:14,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:14,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:51:14,626 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:14,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-26 11:51:14,626 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-26 11:51:14,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:14,627 INFO L85 PathProgramCache]: Analyzing trace with hash 523897669, now seen corresponding path program 4 times [2023-11-26 11:51:14,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:14,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009037401] [2023-11-26 11:51:14,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:14,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:14,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:14,948 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-26 11:51:14,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:14,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009037401] [2023-11-26 11:51:14,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009037401] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:14,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:51:14,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 11:51:14,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739255177] [2023-11-26 11:51:14,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:14,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:51:14,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:14,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:51:14,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:51:14,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2023-11-26 11:51:14,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 232 transitions, 4172 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:14,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:51:14,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2023-11-26 11:51:14,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:51:16,050 INFO L124 PetriNetUnfolderBase]: 1089/2542 cut-off events. [2023-11-26 11:51:16,051 INFO L125 PetriNetUnfolderBase]: For 39307/39329 co-relation queries the response was YES. [2023-11-26 11:51:16,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14349 conditions, 2542 events. 1089/2542 cut-off events. For 39307/39329 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 16991 event pairs, 287 based on Foata normal form. 21/2562 useless extension candidates. Maximal degree in co-relation 14159. Up to 1685 conditions per place. [2023-11-26 11:51:16,088 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 186 selfloop transitions, 100 changer transitions 0/295 dead transitions. [2023-11-26 11:51:16,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 295 transitions, 5308 flow [2023-11-26 11:51:16,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-26 11:51:16,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-26 11:51:16,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 283 transitions. [2023-11-26 11:51:16,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48376068376068376 [2023-11-26 11:51:16,090 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 283 transitions. [2023-11-26 11:51:16,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 283 transitions. [2023-11-26 11:51:16,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:51:16,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 283 transitions. [2023-11-26 11:51:16,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 18.866666666666667) internal successors, (283), 15 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:16,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 39.0) internal successors, (624), 16 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:16,094 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 39.0) internal successors, (624), 16 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:16,095 INFO L175 Difference]: Start difference. First operand has 200 places, 232 transitions, 4172 flow. Second operand 15 states and 283 transitions. [2023-11-26 11:51:16,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 295 transitions, 5308 flow [2023-11-26 11:51:16,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 295 transitions, 5138 flow, removed 0 selfloop flow, removed 13 redundant places. [2023-11-26 11:51:16,361 INFO L231 Difference]: Finished difference. Result has 205 places, 237 transitions, 4380 flow [2023-11-26 11:51:16,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4002, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4380, PETRI_PLACES=205, PETRI_TRANSITIONS=237} [2023-11-26 11:51:16,362 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 166 predicate places. [2023-11-26 11:51:16,362 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 237 transitions, 4380 flow [2023-11-26 11:51:16,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:16,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:51:16,363 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:16,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-26 11:51:16,363 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-26 11:51:16,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:16,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1545095116, now seen corresponding path program 1 times [2023-11-26 11:51:16,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:16,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685523385] [2023-11-26 11:51:16,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:16,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:16,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:16,805 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-26 11:51:16,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:16,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685523385] [2023-11-26 11:51:16,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685523385] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:51:16,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346453450] [2023-11-26 11:51:16,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:16,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:16,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1015eb-5fda-4107-a1e2-c7f8a31897d9/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:51:16,809 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1015eb-5fda-4107-a1e2-c7f8a31897d9/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:51:16,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da1015eb-5fda-4107-a1e2-c7f8a31897d9/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-26 11:51:16,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:16,976 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-26 11:51:16,981 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:51:16,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2023-11-26 11:51:17,180 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2023-11-26 11:51:20,958 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 15 [2023-11-26 11:51:21,009 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-26 11:51:21,009 INFO L327 TraceCheckSpWp]: Computing backward predicates...