./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/06-symbeq_05-funloop_hard2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee89793-625c-4904-a4eb-296f9794d9d9/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee89793-625c-4904-a4eb-296f9794d9d9/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee89793-625c-4904-a4eb-296f9794d9d9/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee89793-625c-4904-a4eb-296f9794d9d9/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/06-symbeq_05-funloop_hard2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee89793-625c-4904-a4eb-296f9794d9d9/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee89793-625c-4904-a4eb-296f9794d9d9/bin/uautomizer-verify-uCwYo4JHxu --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 9e83a031749850377e0f1ecd2c361048b8f87f697f146600048034d31c93bd9a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:42:32,059 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:42:32,131 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee89793-625c-4904-a4eb-296f9794d9d9/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-19 07:42:32,136 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:42:32,137 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:42:32,164 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:42:32,165 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:42:32,166 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:42:32,166 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:42:32,167 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:42:32,168 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:42:32,168 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:42:32,169 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:42:32,170 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:42:32,170 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:42:32,171 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:42:32,171 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:42:32,172 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:42:32,172 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:42:32,173 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:42:32,173 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:42:32,175 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:42:32,176 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 07:42:32,176 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:42:32,177 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:42:32,177 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:42:32,178 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:42:32,179 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:42:32,179 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:42:32,180 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:42:32,181 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:42:32,181 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:42:32,182 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:42:32,182 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:42:32,182 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:42:32,182 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:42:32,183 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:42:32,183 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:42:32,183 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:42:32,183 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:42:32,184 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:42:32,184 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_2ee89793-625c-4904-a4eb-296f9794d9d9/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee89793-625c-4904-a4eb-296f9794d9d9/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e83a031749850377e0f1ecd2c361048b8f87f697f146600048034d31c93bd9a [2023-11-19 07:42:32,481 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:42:32,516 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:42:32,518 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:42:32,520 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:42:32,520 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:42:32,521 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee89793-625c-4904-a4eb-296f9794d9d9/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/goblint-regression/06-symbeq_05-funloop_hard2.i [2023-11-19 07:42:35,710 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:42:36,034 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:42:36,040 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee89793-625c-4904-a4eb-296f9794d9d9/sv-benchmarks/c/goblint-regression/06-symbeq_05-funloop_hard2.i [2023-11-19 07:42:36,063 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee89793-625c-4904-a4eb-296f9794d9d9/bin/uautomizer-verify-uCwYo4JHxu/data/1ed598781/0b5fc462d3d04d7b80a6167a7ca0ca80/FLAG7e96b3f4e [2023-11-19 07:42:36,081 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee89793-625c-4904-a4eb-296f9794d9d9/bin/uautomizer-verify-uCwYo4JHxu/data/1ed598781/0b5fc462d3d04d7b80a6167a7ca0ca80 [2023-11-19 07:42:36,084 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:42:36,085 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:42:36,087 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:42:36,087 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:42:36,097 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:42:36,098 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:42:36" (1/1) ... [2023-11-19 07:42:36,099 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13ff22d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:36, skipping insertion in model container [2023-11-19 07:42:36,099 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:42:36" (1/1) ... [2023-11-19 07:42:36,151 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:42:36,645 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:42:36,664 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:42:36,711 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:42:36,777 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:42:36,777 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:36 WrapperNode [2023-11-19 07:42:36,778 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:42:36,779 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:42:36,779 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:42:36,779 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:42:36,787 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:36" (1/1) ... [2023-11-19 07:42:36,804 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:36" (1/1) ... [2023-11-19 07:42:36,830 INFO L138 Inliner]: procedures = 262, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 91 [2023-11-19 07:42:36,830 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:42:36,831 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:42:36,831 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:42:36,832 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:42:36,842 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:36" (1/1) ... [2023-11-19 07:42:36,843 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:36" (1/1) ... [2023-11-19 07:42:36,863 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:36" (1/1) ... [2023-11-19 07:42:36,864 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:36" (1/1) ... [2023-11-19 07:42:36,871 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:36" (1/1) ... [2023-11-19 07:42:36,890 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:36" (1/1) ... [2023-11-19 07:42:36,892 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:36" (1/1) ... [2023-11-19 07:42:36,894 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:36" (1/1) ... [2023-11-19 07:42:36,897 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:42:36,905 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:42:36,905 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:42:36,905 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:42:36,906 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:36" (1/1) ... [2023-11-19 07:42:36,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:42:36,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee89793-625c-4904-a4eb-296f9794d9d9/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:42:36,947 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee89793-625c-4904-a4eb-296f9794d9d9/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:42:36,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee89793-625c-4904-a4eb-296f9794d9d9/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:42:36,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:42:36,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:42:36,999 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:42:36,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:42:37,000 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 07:42:37,000 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:42:37,000 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-19 07:42:37,000 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-19 07:42:37,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:42:37,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:42:37,002 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:42:37,193 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:42:37,195 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:42:37,389 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:42:37,399 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:42:37,399 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-19 07:42:37,403 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:42:37 BoogieIcfgContainer [2023-11-19 07:42:37,404 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:42:37,406 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:42:37,407 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:42:37,410 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:42:37,410 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:42:36" (1/3) ... [2023-11-19 07:42:37,417 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44030133 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:42:37, skipping insertion in model container [2023-11-19 07:42:37,417 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:36" (2/3) ... [2023-11-19 07:42:37,417 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44030133 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:42:37, skipping insertion in model container [2023-11-19 07:42:37,417 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:42:37" (3/3) ... [2023-11-19 07:42:37,420 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_05-funloop_hard2.i [2023-11-19 07:42:37,428 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:42:37,451 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:42:37,451 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-11-19 07:42:37,451 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:42:37,509 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:42:37,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 105 places, 107 transitions, 218 flow [2023-11-19 07:42:37,595 INFO L124 PetriNetUnfolderBase]: 6/106 cut-off events. [2023-11-19 07:42:37,595 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:42:37,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 106 events. 6/106 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 200 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 80. Up to 2 conditions per place. [2023-11-19 07:42:37,603 INFO L82 GeneralOperation]: Start removeDead. Operand has 105 places, 107 transitions, 218 flow [2023-11-19 07:42:37,609 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 106 transitions, 215 flow [2023-11-19 07:42:37,612 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:42:37,623 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 104 places, 106 transitions, 215 flow [2023-11-19 07:42:37,625 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 104 places, 106 transitions, 215 flow [2023-11-19 07:42:37,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 106 transitions, 215 flow [2023-11-19 07:42:37,655 INFO L124 PetriNetUnfolderBase]: 6/106 cut-off events. [2023-11-19 07:42:37,655 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:42:37,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 106 events. 6/106 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 200 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 80. Up to 2 conditions per place. [2023-11-19 07:42:37,660 INFO L119 LiptonReduction]: Number of co-enabled transitions 3072 [2023-11-19 07:42:40,189 INFO L134 LiptonReduction]: Checked pairs total: 4135 [2023-11-19 07:42:40,190 INFO L136 LiptonReduction]: Total number of compositions: 102 [2023-11-19 07:42:40,222 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:42:40,230 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;@711b38ac, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:42:40,231 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-19 07:42:40,237 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:42:40,238 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-19 07:42:40,238 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:42:40,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:42:40,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:42:40,239 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-19 07:42:40,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:40,245 INFO L85 PathProgramCache]: Analyzing trace with hash 12989, now seen corresponding path program 1 times [2023-11-19 07:42:40,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:40,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988513971] [2023-11-19 07:42:40,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:40,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:40,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:40,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:42:40,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:40,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988513971] [2023-11-19 07:42:40,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988513971] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:42:40,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:42:40,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:42:40,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465915447] [2023-11-19 07:42:40,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:42:40,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:42:40,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:40,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:42:40,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:42:40,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 209 [2023-11-19 07:42:40,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 31 transitions, 65 flow. Second operand has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:40,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:42:40,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 209 [2023-11-19 07:42:40,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:42:40,717 INFO L124 PetriNetUnfolderBase]: 152/304 cut-off events. [2023-11-19 07:42:40,717 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:42:40,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 613 conditions, 304 events. 152/304 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1287 event pairs, 126 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 600. Up to 303 conditions per place. [2023-11-19 07:42:40,722 INFO L140 encePairwiseOnDemand]: 205/209 looper letters, 27 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2023-11-19 07:42:40,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 29 transitions, 119 flow [2023-11-19 07:42:40,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:42:40,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:42:40,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 322 transitions. [2023-11-19 07:42:40,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135566188197768 [2023-11-19 07:42:40,748 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 322 transitions. [2023-11-19 07:42:40,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 322 transitions. [2023-11-19 07:42:40,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:42:40,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 322 transitions. [2023-11-19 07:42:40,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:40,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:40,767 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:40,769 INFO L175 Difference]: Start difference. First operand has 32 places, 31 transitions, 65 flow. Second operand 3 states and 322 transitions. [2023-11-19 07:42:40,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 29 transitions, 119 flow [2023-11-19 07:42:40,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 29 transitions, 118 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:42:40,775 INFO L231 Difference]: Finished difference. Result has 31 places, 29 transitions, 64 flow [2023-11-19 07:42:40,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=31, PETRI_TRANSITIONS=29} [2023-11-19 07:42:40,781 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -1 predicate places. [2023-11-19 07:42:40,782 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 29 transitions, 64 flow [2023-11-19 07:42:40,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:40,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:42:40,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:42:40,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:42:40,783 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-19 07:42:40,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:40,784 INFO L85 PathProgramCache]: Analyzing trace with hash -851161763, now seen corresponding path program 1 times [2023-11-19 07:42:40,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:40,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103426175] [2023-11-19 07:42:40,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:40,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:40,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:40,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:42:40,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:40,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103426175] [2023-11-19 07:42:40,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103426175] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:42:40,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:42:40,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:42:40,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274276467] [2023-11-19 07:42:40,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:42:40,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:42:40,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:40,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:42:40,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:42:40,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 209 [2023-11-19 07:42:40,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 29 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:40,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:42:40,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 209 [2023-11-19 07:42:40,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:42:41,088 INFO L124 PetriNetUnfolderBase]: 152/305 cut-off events. [2023-11-19 07:42:41,089 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:42:41,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 617 conditions, 305 events. 152/305 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1284 event pairs, 126 based on Foata normal form. 1/161 useless extension candidates. Maximal degree in co-relation 604. Up to 305 conditions per place. [2023-11-19 07:42:41,096 INFO L140 encePairwiseOnDemand]: 206/209 looper letters, 28 selfloop transitions, 2 changer transitions 0/30 dead transitions. [2023-11-19 07:42:41,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 30 transitions, 126 flow [2023-11-19 07:42:41,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:42:41,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:42:41,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 322 transitions. [2023-11-19 07:42:41,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135566188197768 [2023-11-19 07:42:41,101 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 322 transitions. [2023-11-19 07:42:41,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 322 transitions. [2023-11-19 07:42:41,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:42:41,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 322 transitions. [2023-11-19 07:42:41,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:41,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:41,110 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:41,111 INFO L175 Difference]: Start difference. First operand has 31 places, 29 transitions, 64 flow. Second operand 3 states and 322 transitions. [2023-11-19 07:42:41,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 30 transitions, 126 flow [2023-11-19 07:42:41,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 122 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:42:41,114 INFO L231 Difference]: Finished difference. Result has 32 places, 30 transitions, 72 flow [2023-11-19 07:42:41,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=32, PETRI_TRANSITIONS=30} [2023-11-19 07:42:41,118 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 0 predicate places. [2023-11-19 07:42:41,118 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 30 transitions, 72 flow [2023-11-19 07:42:41,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:41,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:42:41,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:42:41,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:42:41,121 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-19 07:42:41,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:41,127 INFO L85 PathProgramCache]: Analyzing trace with hash -643449668, now seen corresponding path program 1 times [2023-11-19 07:42:41,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:41,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375420958] [2023-11-19 07:42:41,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:41,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:41,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:41,266 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:42:41,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:41,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375420958] [2023-11-19 07:42:41,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375420958] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:42:41,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446857465] [2023-11-19 07:42:41,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:41,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:42:41,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee89793-625c-4904-a4eb-296f9794d9d9/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:42:41,279 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee89793-625c-4904-a4eb-296f9794d9d9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:42:41,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee89793-625c-4904-a4eb-296f9794d9d9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:42:41,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:41,387 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:42:41,392 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:42:41,436 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:42:41,436 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:42:41,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:42:41,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446857465] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:42:41,461 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:42:41,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-19 07:42:41,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290907710] [2023-11-19 07:42:41,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:42:41,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:42:41,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:41,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:42:41,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:42:41,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 209 [2023-11-19 07:42:41,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 30 transitions, 72 flow. Second operand has 7 states, 7 states have (on average 97.71428571428571) internal successors, (684), 7 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:41,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:42:41,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 209 [2023-11-19 07:42:41,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:42:41,660 INFO L124 PetriNetUnfolderBase]: 152/308 cut-off events. [2023-11-19 07:42:41,661 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:42:41,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 630 conditions, 308 events. 152/308 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1290 event pairs, 126 based on Foata normal form. 0/162 useless extension candidates. Maximal degree in co-relation 619. Up to 305 conditions per place. [2023-11-19 07:42:41,668 INFO L140 encePairwiseOnDemand]: 206/209 looper letters, 28 selfloop transitions, 5 changer transitions 0/33 dead transitions. [2023-11-19 07:42:41,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 33 transitions, 150 flow [2023-11-19 07:42:41,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:42:41,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:42:41,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 612 transitions. [2023-11-19 07:42:41,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4880382775119617 [2023-11-19 07:42:41,673 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 612 transitions. [2023-11-19 07:42:41,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 612 transitions. [2023-11-19 07:42:41,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:42:41,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 612 transitions. [2023-11-19 07:42:41,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 102.0) internal successors, (612), 6 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:41,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 209.0) internal successors, (1463), 7 states have internal predecessors, (1463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:41,681 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 209.0) internal successors, (1463), 7 states have internal predecessors, (1463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:41,681 INFO L175 Difference]: Start difference. First operand has 32 places, 30 transitions, 72 flow. Second operand 6 states and 612 transitions. [2023-11-19 07:42:41,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 33 transitions, 150 flow [2023-11-19 07:42:41,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 33 transitions, 146 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-19 07:42:41,684 INFO L231 Difference]: Finished difference. Result has 39 places, 33 transitions, 104 flow [2023-11-19 07:42:41,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=104, PETRI_PLACES=39, PETRI_TRANSITIONS=33} [2023-11-19 07:42:41,686 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 7 predicate places. [2023-11-19 07:42:41,686 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 33 transitions, 104 flow [2023-11-19 07:42:41,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 97.71428571428571) internal successors, (684), 7 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:41,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:42:41,687 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-11-19 07:42:41,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee89793-625c-4904-a4eb-296f9794d9d9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:42:41,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee89793-625c-4904-a4eb-296f9794d9d9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:42:41,903 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-19 07:42:41,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:41,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1848333027, now seen corresponding path program 2 times [2023-11-19 07:42:41,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:41,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889862109] [2023-11-19 07:42:41,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:41,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:41,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:42,094 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:42:42,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:42,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889862109] [2023-11-19 07:42:42,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889862109] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:42:42,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828779610] [2023-11-19 07:42:42,095 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:42:42,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:42:42,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee89793-625c-4904-a4eb-296f9794d9d9/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:42:42,097 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee89793-625c-4904-a4eb-296f9794d9d9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:42:42,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee89793-625c-4904-a4eb-296f9794d9d9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:42:42,198 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-19 07:42:42,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:42:42,200 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-19 07:42:42,201 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:42:42,240 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 [2023-11-19 07:42:42,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:42:42,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 10 [2023-11-19 07:42:42,355 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-19 07:42:42,355 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:42:42,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828779610] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:42:42,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:42:42,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2023-11-19 07:42:42,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939631989] [2023-11-19 07:42:42,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:42:42,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:42:42,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:42,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:42:42,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:42:42,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 209 [2023-11-19 07:42:42,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 33 transitions, 104 flow. Second operand has 5 states, 5 states have (on average 95.4) internal successors, (477), 5 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:42,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:42:42,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 209 [2023-11-19 07:42:42,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:42:42,618 INFO L124 PetriNetUnfolderBase]: 196/391 cut-off events. [2023-11-19 07:42:42,618 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:42:42,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 809 conditions, 391 events. 196/391 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 1737 event pairs, 48 based on Foata normal form. 0/223 useless extension candidates. Maximal degree in co-relation 776. Up to 317 conditions per place. [2023-11-19 07:42:42,622 INFO L140 encePairwiseOnDemand]: 200/209 looper letters, 49 selfloop transitions, 7 changer transitions 0/56 dead transitions. [2023-11-19 07:42:42,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 56 transitions, 262 flow [2023-11-19 07:42:42,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:42:42,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:42:42,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 434 transitions. [2023-11-19 07:42:42,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5191387559808612 [2023-11-19 07:42:42,626 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 434 transitions. [2023-11-19 07:42:42,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 434 transitions. [2023-11-19 07:42:42,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:42:42,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 434 transitions. [2023-11-19 07:42:42,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 108.5) internal successors, (434), 4 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:42,631 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 209.0) internal successors, (1045), 5 states have internal predecessors, (1045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:42,633 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 209.0) internal successors, (1045), 5 states have internal predecessors, (1045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:42,633 INFO L175 Difference]: Start difference. First operand has 39 places, 33 transitions, 104 flow. Second operand 4 states and 434 transitions. [2023-11-19 07:42:42,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 56 transitions, 262 flow [2023-11-19 07:42:42,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 56 transitions, 248 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-19 07:42:42,636 INFO L231 Difference]: Finished difference. Result has 43 places, 39 transitions, 144 flow [2023-11-19 07:42:42,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=144, PETRI_PLACES=43, PETRI_TRANSITIONS=39} [2023-11-19 07:42:42,638 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 11 predicate places. [2023-11-19 07:42:42,638 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 39 transitions, 144 flow [2023-11-19 07:42:42,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 95.4) internal successors, (477), 5 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:42,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:42:42,639 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-11-19 07:42:42,663 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee89793-625c-4904-a4eb-296f9794d9d9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-19 07:42:42,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee89793-625c-4904-a4eb-296f9794d9d9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:42:42,864 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-19 07:42:42,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:42,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1848339806, now seen corresponding path program 1 times [2023-11-19 07:42:42,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:42,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102314447] [2023-11-19 07:42:42,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:42,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:42,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:42,978 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:42:42,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:42,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102314447] [2023-11-19 07:42:42,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102314447] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:42:42,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31729360] [2023-11-19 07:42:42,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:42,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:42:42,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee89793-625c-4904-a4eb-296f9794d9d9/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:42:42,988 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee89793-625c-4904-a4eb-296f9794d9d9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:42:43,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee89793-625c-4904-a4eb-296f9794d9d9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:42:43,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:43,072 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:42:43,074 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:42:43,104 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:42:43,104 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:42:43,175 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:42:43,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31729360] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:42:43,176 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:42:43,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-11-19 07:42:43,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794481273] [2023-11-19 07:42:43,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:42:43,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 07:42:43,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:43,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 07:42:43,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:42:43,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 209 [2023-11-19 07:42:43,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 39 transitions, 144 flow. Second operand has 12 states, 12 states have (on average 97.33333333333333) internal successors, (1168), 12 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:43,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:42:43,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 209 [2023-11-19 07:42:43,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:42:43,365 INFO L124 PetriNetUnfolderBase]: 196/397 cut-off events. [2023-11-19 07:42:43,365 INFO L125 PetriNetUnfolderBase]: For 104/104 co-relation queries the response was YES. [2023-11-19 07:42:43,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1002 conditions, 397 events. 196/397 cut-off events. For 104/104 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 1741 event pairs, 129 based on Foata normal form. 6/283 useless extension candidates. Maximal degree in co-relation 948. Up to 388 conditions per place. [2023-11-19 07:42:43,369 INFO L140 encePairwiseOnDemand]: 206/209 looper letters, 34 selfloop transitions, 11 changer transitions 0/45 dead transitions. [2023-11-19 07:42:43,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 45 transitions, 270 flow [2023-11-19 07:42:43,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:42:43,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-19 07:42:43,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1197 transitions. [2023-11-19 07:42:43,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4772727272727273 [2023-11-19 07:42:43,375 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1197 transitions. [2023-11-19 07:42:43,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1197 transitions. [2023-11-19 07:42:43,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:42:43,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1197 transitions. [2023-11-19 07:42:43,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 99.75) internal successors, (1197), 12 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:43,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 209.0) internal successors, (2717), 13 states have internal predecessors, (2717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:43,388 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 209.0) internal successors, (2717), 13 states have internal predecessors, (2717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:43,389 INFO L175 Difference]: Start difference. First operand has 43 places, 39 transitions, 144 flow. Second operand 12 states and 1197 transitions. [2023-11-19 07:42:43,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 45 transitions, 270 flow [2023-11-19 07:42:43,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 45 transitions, 270 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:42:43,397 INFO L231 Difference]: Finished difference. Result has 60 places, 45 transitions, 228 flow [2023-11-19 07:42:43,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=43, 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=12, PETRI_FLOW=228, PETRI_PLACES=60, PETRI_TRANSITIONS=45} [2023-11-19 07:42:43,400 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 28 predicate places. [2023-11-19 07:42:43,400 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 45 transitions, 228 flow [2023-11-19 07:42:43,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 97.33333333333333) internal successors, (1168), 12 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:43,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:42:43,401 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1] [2023-11-19 07:42:43,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee89793-625c-4904-a4eb-296f9794d9d9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:42:43,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee89793-625c-4904-a4eb-296f9794d9d9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:42:43,619 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-19 07:42:43,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:43,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1889738306, now seen corresponding path program 2 times [2023-11-19 07:42:43,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:43,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698674817] [2023-11-19 07:42:43,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:43,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:43,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:43,856 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-19 07:42:43,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:43,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698674817] [2023-11-19 07:42:43,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698674817] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:42:43,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:42:43,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:42:43,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171167300] [2023-11-19 07:42:43,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:42:43,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:42:43,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:43,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:42:43,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:42:43,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 209 [2023-11-19 07:42:43,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 45 transitions, 228 flow. Second operand has 5 states, 5 states have (on average 95.4) internal successors, (477), 5 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:43,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:42:43,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 209 [2023-11-19 07:42:43,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:42:44,127 INFO L124 PetriNetUnfolderBase]: 186/377 cut-off events. [2023-11-19 07:42:44,127 INFO L125 PetriNetUnfolderBase]: For 104/104 co-relation queries the response was YES. [2023-11-19 07:42:44,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 985 conditions, 377 events. 186/377 cut-off events. For 104/104 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 1616 event pairs, 60 based on Foata normal form. 0/267 useless extension candidates. Maximal degree in co-relation 906. Up to 315 conditions per place. [2023-11-19 07:42:44,131 INFO L140 encePairwiseOnDemand]: 202/209 looper letters, 50 selfloop transitions, 8 changer transitions 0/58 dead transitions. [2023-11-19 07:42:44,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 58 transitions, 377 flow [2023-11-19 07:42:44,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:42:44,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:42:44,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 424 transitions. [2023-11-19 07:42:44,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.507177033492823 [2023-11-19 07:42:44,134 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 424 transitions. [2023-11-19 07:42:44,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 424 transitions. [2023-11-19 07:42:44,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:42:44,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 424 transitions. [2023-11-19 07:42:44,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 106.0) internal successors, (424), 4 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:44,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 209.0) internal successors, (1045), 5 states have internal predecessors, (1045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:44,139 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 209.0) internal successors, (1045), 5 states have internal predecessors, (1045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:44,139 INFO L175 Difference]: Start difference. First operand has 60 places, 45 transitions, 228 flow. Second operand 4 states and 424 transitions. [2023-11-19 07:42:44,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 58 transitions, 377 flow [2023-11-19 07:42:44,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 58 transitions, 329 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-11-19 07:42:44,148 INFO L231 Difference]: Finished difference. Result has 60 places, 47 transitions, 218 flow [2023-11-19 07:42:44,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=218, PETRI_PLACES=60, PETRI_TRANSITIONS=47} [2023-11-19 07:42:44,151 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 28 predicate places. [2023-11-19 07:42:44,151 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 47 transitions, 218 flow [2023-11-19 07:42:44,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 95.4) internal successors, (477), 5 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:44,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:42:44,152 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:42:44,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:42:44,152 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-19 07:42:44,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:44,153 INFO L85 PathProgramCache]: Analyzing trace with hash -726198525, now seen corresponding path program 1 times [2023-11-19 07:42:44,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:44,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452318521] [2023-11-19 07:42:44,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:44,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:44,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:44,222 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-19 07:42:44,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:44,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452318521] [2023-11-19 07:42:44,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452318521] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:42:44,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:42:44,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:42:44,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668653527] [2023-11-19 07:42:44,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:42:44,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:42:44,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:44,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:42:44,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:42:44,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 209 [2023-11-19 07:42:44,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 47 transitions, 218 flow. Second operand has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:44,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:42:44,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 209 [2023-11-19 07:42:44,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:42:44,402 INFO L124 PetriNetUnfolderBase]: 264/534 cut-off events. [2023-11-19 07:42:44,403 INFO L125 PetriNetUnfolderBase]: For 184/184 co-relation queries the response was YES. [2023-11-19 07:42:44,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1450 conditions, 534 events. 264/534 cut-off events. For 184/184 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2518 event pairs, 98 based on Foata normal form. 20/431 useless extension candidates. Maximal degree in co-relation 1392. Up to 321 conditions per place. [2023-11-19 07:42:44,409 INFO L140 encePairwiseOnDemand]: 204/209 looper letters, 69 selfloop transitions, 2 changer transitions 0/71 dead transitions. [2023-11-19 07:42:44,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 71 transitions, 450 flow [2023-11-19 07:42:44,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:42:44,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:42:44,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 350 transitions. [2023-11-19 07:42:44,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5582137161084529 [2023-11-19 07:42:44,411 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 350 transitions. [2023-11-19 07:42:44,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 350 transitions. [2023-11-19 07:42:44,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:42:44,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 350 transitions. [2023-11-19 07:42:44,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:44,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:44,415 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:44,415 INFO L175 Difference]: Start difference. First operand has 60 places, 47 transitions, 218 flow. Second operand 3 states and 350 transitions. [2023-11-19 07:42:44,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 71 transitions, 450 flow [2023-11-19 07:42:44,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 71 transitions, 441 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:42:44,419 INFO L231 Difference]: Finished difference. Result has 62 places, 48 transitions, 227 flow [2023-11-19 07:42:44,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=227, PETRI_PLACES=62, PETRI_TRANSITIONS=48} [2023-11-19 07:42:44,420 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 30 predicate places. [2023-11-19 07:42:44,420 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 48 transitions, 227 flow [2023-11-19 07:42:44,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:44,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:42:44,421 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:42:44,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:42:44,421 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-19 07:42:44,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:44,421 INFO L85 PathProgramCache]: Analyzing trace with hash -732646018, now seen corresponding path program 1 times [2023-11-19 07:42:44,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:44,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038304101] [2023-11-19 07:42:44,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:44,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:44,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:44,482 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-19 07:42:44,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:44,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038304101] [2023-11-19 07:42:44,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038304101] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:42:44,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:42:44,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:42:44,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764416137] [2023-11-19 07:42:44,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:42:44,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:42:44,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:44,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:42:44,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:42:44,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 209 [2023-11-19 07:42:44,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 48 transitions, 227 flow. Second operand has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:44,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:42:44,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 209 [2023-11-19 07:42:44,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:42:44,690 INFO L124 PetriNetUnfolderBase]: 318/646 cut-off events. [2023-11-19 07:42:44,690 INFO L125 PetriNetUnfolderBase]: For 311/311 co-relation queries the response was YES. [2023-11-19 07:42:44,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1852 conditions, 646 events. 318/646 cut-off events. For 311/311 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2961 event pairs, 182 based on Foata normal form. 14/508 useless extension candidates. Maximal degree in co-relation 1793. Up to 493 conditions per place. [2023-11-19 07:42:44,697 INFO L140 encePairwiseOnDemand]: 204/209 looper letters, 63 selfloop transitions, 2 changer transitions 0/65 dead transitions. [2023-11-19 07:42:44,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 65 transitions, 420 flow [2023-11-19 07:42:44,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:42:44,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:42:44,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 339 transitions. [2023-11-19 07:42:44,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5406698564593302 [2023-11-19 07:42:44,699 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 339 transitions. [2023-11-19 07:42:44,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 339 transitions. [2023-11-19 07:42:44,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:42:44,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 339 transitions. [2023-11-19 07:42:44,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 113.0) internal successors, (339), 3 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) [2023-11-19 07:42:44,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:44,703 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:44,703 INFO L175 Difference]: Start difference. First operand has 62 places, 48 transitions, 227 flow. Second operand 3 states and 339 transitions. [2023-11-19 07:42:44,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 65 transitions, 420 flow [2023-11-19 07:42:44,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 65 transitions, 414 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-19 07:42:44,707 INFO L231 Difference]: Finished difference. Result has 64 places, 47 transitions, 225 flow [2023-11-19 07:42:44,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=225, PETRI_PLACES=64, PETRI_TRANSITIONS=47} [2023-11-19 07:42:44,708 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 32 predicate places. [2023-11-19 07:42:44,708 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 47 transitions, 225 flow [2023-11-19 07:42:44,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:44,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:42:44,709 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:42:44,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:42:44,709 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-19 07:42:44,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:44,710 INFO L85 PathProgramCache]: Analyzing trace with hash -2092129967, now seen corresponding path program 1 times [2023-11-19 07:42:44,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:44,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809588689] [2023-11-19 07:42:44,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:44,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:44,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:45,218 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-19 07:42:45,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:45,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809588689] [2023-11-19 07:42:45,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809588689] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:42:45,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:42:45,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:42:45,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171268645] [2023-11-19 07:42:45,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:42:45,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:42:45,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:45,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:42:45,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:42:45,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 209 [2023-11-19 07:42:45,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 47 transitions, 225 flow. Second operand has 8 states, 8 states have (on average 88.375) internal successors, (707), 8 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:45,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:42:45,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 209 [2023-11-19 07:42:45,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:42:45,916 INFO L124 PetriNetUnfolderBase]: 344/710 cut-off events. [2023-11-19 07:42:45,917 INFO L125 PetriNetUnfolderBase]: For 348/348 co-relation queries the response was YES. [2023-11-19 07:42:45,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2111 conditions, 710 events. 344/710 cut-off events. For 348/348 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3430 event pairs, 180 based on Foata normal form. 0/550 useless extension candidates. Maximal degree in co-relation 2051. Up to 588 conditions per place. [2023-11-19 07:42:45,924 INFO L140 encePairwiseOnDemand]: 200/209 looper letters, 62 selfloop transitions, 20 changer transitions 0/82 dead transitions. [2023-11-19 07:42:45,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 82 transitions, 529 flow [2023-11-19 07:42:45,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 07:42:45,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-19 07:42:45,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1028 transitions. [2023-11-19 07:42:45,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44715093518921273 [2023-11-19 07:42:45,929 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1028 transitions. [2023-11-19 07:42:45,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1028 transitions. [2023-11-19 07:42:45,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:42:45,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1028 transitions. [2023-11-19 07:42:45,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 93.45454545454545) internal successors, (1028), 11 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:45,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 209.0) internal successors, (2508), 12 states have internal predecessors, (2508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:45,939 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 209.0) internal successors, (2508), 12 states have internal predecessors, (2508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:45,939 INFO L175 Difference]: Start difference. First operand has 64 places, 47 transitions, 225 flow. Second operand 11 states and 1028 transitions. [2023-11-19 07:42:45,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 82 transitions, 529 flow [2023-11-19 07:42:45,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 82 transitions, 524 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:42:45,945 INFO L231 Difference]: Finished difference. Result has 78 places, 60 transitions, 367 flow [2023-11-19 07:42:45,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=367, PETRI_PLACES=78, PETRI_TRANSITIONS=60} [2023-11-19 07:42:45,946 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 46 predicate places. [2023-11-19 07:42:45,946 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 60 transitions, 367 flow [2023-11-19 07:42:45,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 88.375) internal successors, (707), 8 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:45,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:42:45,947 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:42:45,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:42:45,947 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-19 07:42:45,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:45,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1767331335, now seen corresponding path program 1 times [2023-11-19 07:42:45,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:45,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361892117] [2023-11-19 07:42:45,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:45,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:45,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:46,418 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-19 07:42:46,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:46,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361892117] [2023-11-19 07:42:46,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361892117] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:42:46,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:42:46,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:42:46,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182825050] [2023-11-19 07:42:46,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:42:46,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:42:46,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:46,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:42:46,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:42:46,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 209 [2023-11-19 07:42:46,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 60 transitions, 367 flow. Second operand has 8 states, 8 states have (on average 88.375) internal successors, (707), 8 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:46,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:42:46,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 209 [2023-11-19 07:42:46,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:42:47,056 INFO L124 PetriNetUnfolderBase]: 362/765 cut-off events. [2023-11-19 07:42:47,057 INFO L125 PetriNetUnfolderBase]: For 980/980 co-relation queries the response was YES. [2023-11-19 07:42:47,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2637 conditions, 765 events. 362/765 cut-off events. For 980/980 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3898 event pairs, 178 based on Foata normal form. 7/630 useless extension candidates. Maximal degree in co-relation 2571. Up to 653 conditions per place. [2023-11-19 07:42:47,065 INFO L140 encePairwiseOnDemand]: 200/209 looper letters, 66 selfloop transitions, 23 changer transitions 0/89 dead transitions. [2023-11-19 07:42:47,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 89 transitions, 689 flow [2023-11-19 07:42:47,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 07:42:47,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-19 07:42:47,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 939 transitions. [2023-11-19 07:42:47,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4492822966507177 [2023-11-19 07:42:47,070 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 939 transitions. [2023-11-19 07:42:47,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 939 transitions. [2023-11-19 07:42:47,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:42:47,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 939 transitions. [2023-11-19 07:42:47,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 93.9) internal successors, (939), 10 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:47,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 209.0) internal successors, (2299), 11 states have internal predecessors, (2299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:47,079 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 209.0) internal successors, (2299), 11 states have internal predecessors, (2299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:47,079 INFO L175 Difference]: Start difference. First operand has 78 places, 60 transitions, 367 flow. Second operand 10 states and 939 transitions. [2023-11-19 07:42:47,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 89 transitions, 689 flow [2023-11-19 07:42:47,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 89 transitions, 636 flow, removed 5 selfloop flow, removed 5 redundant places. [2023-11-19 07:42:47,088 INFO L231 Difference]: Finished difference. Result has 85 places, 69 transitions, 460 flow [2023-11-19 07:42:47,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=460, PETRI_PLACES=85, PETRI_TRANSITIONS=69} [2023-11-19 07:42:47,088 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 53 predicate places. [2023-11-19 07:42:47,089 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 69 transitions, 460 flow [2023-11-19 07:42:47,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 88.375) internal successors, (707), 8 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:47,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:42:47,089 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:42:47,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:42:47,090 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-19 07:42:47,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:47,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1765543875, now seen corresponding path program 2 times [2023-11-19 07:42:47,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:47,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819300173] [2023-11-19 07:42:47,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:47,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:47,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:47,516 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-19 07:42:47,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:47,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819300173] [2023-11-19 07:42:47,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819300173] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:42:47,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:42:47,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:42:47,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583298831] [2023-11-19 07:42:47,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:42:47,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:42:47,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:47,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:42:47,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:42:47,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 209 [2023-11-19 07:42:47,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 69 transitions, 460 flow. Second operand has 8 states, 8 states have (on average 88.375) internal successors, (707), 8 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:47,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:42:47,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 209 [2023-11-19 07:42:47,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:42:48,099 INFO L124 PetriNetUnfolderBase]: 373/788 cut-off events. [2023-11-19 07:42:48,099 INFO L125 PetriNetUnfolderBase]: For 1450/1450 co-relation queries the response was YES. [2023-11-19 07:42:48,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2829 conditions, 788 events. 373/788 cut-off events. For 1450/1450 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4034 event pairs, 169 based on Foata normal form. 7/651 useless extension candidates. Maximal degree in co-relation 2761. Up to 676 conditions per place. [2023-11-19 07:42:48,108 INFO L140 encePairwiseOnDemand]: 200/209 looper letters, 69 selfloop transitions, 22 changer transitions 0/91 dead transitions. [2023-11-19 07:42:48,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 91 transitions, 744 flow [2023-11-19 07:42:48,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:42:48,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-19 07:42:48,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 760 transitions. [2023-11-19 07:42:48,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2023-11-19 07:42:48,112 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 760 transitions. [2023-11-19 07:42:48,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 760 transitions. [2023-11-19 07:42:48,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:42:48,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 760 transitions. [2023-11-19 07:42:48,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 95.0) internal successors, (760), 8 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:48,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 209.0) internal successors, (1881), 9 states have internal predecessors, (1881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:48,120 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 209.0) internal successors, (1881), 9 states have internal predecessors, (1881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:48,121 INFO L175 Difference]: Start difference. First operand has 85 places, 69 transitions, 460 flow. Second operand 8 states and 760 transitions. [2023-11-19 07:42:48,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 91 transitions, 744 flow [2023-11-19 07:42:48,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 91 transitions, 732 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-19 07:42:48,130 INFO L231 Difference]: Finished difference. Result has 91 places, 73 transitions, 544 flow [2023-11-19 07:42:48,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=544, PETRI_PLACES=91, PETRI_TRANSITIONS=73} [2023-11-19 07:42:48,131 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 59 predicate places. [2023-11-19 07:42:48,131 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 73 transitions, 544 flow [2023-11-19 07:42:48,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 88.375) internal successors, (707), 8 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:48,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:42:48,132 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:42:48,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 07:42:48,132 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-19 07:42:48,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:48,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1764896595, now seen corresponding path program 3 times [2023-11-19 07:42:48,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:48,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814487382] [2023-11-19 07:42:48,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:48,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:48,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:48,576 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-19 07:42:48,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:48,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814487382] [2023-11-19 07:42:48,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814487382] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:42:48,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:42:48,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:42:48,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675804330] [2023-11-19 07:42:48,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:42:48,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:42:48,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:48,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:42:48,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:42:48,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 209 [2023-11-19 07:42:48,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 73 transitions, 544 flow. Second operand has 7 states, 7 states have (on average 92.57142857142857) internal successors, (648), 7 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:48,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:42:48,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 209 [2023-11-19 07:42:48,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:42:49,186 INFO L124 PetriNetUnfolderBase]: 422/883 cut-off events. [2023-11-19 07:42:49,187 INFO L125 PetriNetUnfolderBase]: For 2425/2425 co-relation queries the response was YES. [2023-11-19 07:42:49,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3263 conditions, 883 events. 422/883 cut-off events. For 2425/2425 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4659 event pairs, 150 based on Foata normal form. 23/751 useless extension candidates. Maximal degree in co-relation 3192. Up to 604 conditions per place. [2023-11-19 07:42:49,197 INFO L140 encePairwiseOnDemand]: 202/209 looper letters, 81 selfloop transitions, 32 changer transitions 0/113 dead transitions. [2023-11-19 07:42:49,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 113 transitions, 984 flow [2023-11-19 07:42:49,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:42:49,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-19 07:42:49,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 898 transitions. [2023-11-19 07:42:49,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47740563530037217 [2023-11-19 07:42:49,228 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 898 transitions. [2023-11-19 07:42:49,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 898 transitions. [2023-11-19 07:42:49,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:42:49,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 898 transitions. [2023-11-19 07:42:49,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 99.77777777777777) internal successors, (898), 9 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:49,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 209.0) internal successors, (2090), 10 states have internal predecessors, (2090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:49,237 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 209.0) internal successors, (2090), 10 states have internal predecessors, (2090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:49,237 INFO L175 Difference]: Start difference. First operand has 91 places, 73 transitions, 544 flow. Second operand 9 states and 898 transitions. [2023-11-19 07:42:49,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 113 transitions, 984 flow [2023-11-19 07:42:49,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 113 transitions, 926 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-11-19 07:42:49,251 INFO L231 Difference]: Finished difference. Result has 97 places, 80 transitions, 663 flow [2023-11-19 07:42:49,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=663, PETRI_PLACES=97, PETRI_TRANSITIONS=80} [2023-11-19 07:42:49,254 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 65 predicate places. [2023-11-19 07:42:49,254 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 80 transitions, 663 flow [2023-11-19 07:42:49,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 92.57142857142857) internal successors, (648), 7 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:49,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:42:49,255 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:42:49,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 07:42:49,256 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-19 07:42:49,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:49,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1764896609, now seen corresponding path program 2 times [2023-11-19 07:42:49,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:49,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156230844] [2023-11-19 07:42:49,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:49,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:49,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:49,672 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-19 07:42:49,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:49,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156230844] [2023-11-19 07:42:49,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156230844] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:42:49,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:42:49,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:42:49,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833823338] [2023-11-19 07:42:49,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:42:49,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:42:49,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:49,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:42:49,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:42:49,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 209 [2023-11-19 07:42:49,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 80 transitions, 663 flow. Second operand has 8 states, 8 states have (on average 88.375) internal successors, (707), 8 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:49,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:42:49,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 209 [2023-11-19 07:42:49,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:42:50,340 INFO L124 PetriNetUnfolderBase]: 415/869 cut-off events. [2023-11-19 07:42:50,342 INFO L125 PetriNetUnfolderBase]: For 3521/3521 co-relation queries the response was YES. [2023-11-19 07:42:50,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3507 conditions, 869 events. 415/869 cut-off events. For 3521/3521 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4528 event pairs, 141 based on Foata normal form. 7/722 useless extension candidates. Maximal degree in co-relation 3433. Up to 670 conditions per place. [2023-11-19 07:42:50,352 INFO L140 encePairwiseOnDemand]: 201/209 looper letters, 77 selfloop transitions, 34 changer transitions 0/111 dead transitions. [2023-11-19 07:42:50,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 111 transitions, 1013 flow [2023-11-19 07:42:50,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 07:42:50,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-19 07:42:50,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1035 transitions. [2023-11-19 07:42:50,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.450195737277077 [2023-11-19 07:42:50,359 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1035 transitions. [2023-11-19 07:42:50,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1035 transitions. [2023-11-19 07:42:50,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:42:50,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1035 transitions. [2023-11-19 07:42:50,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 94.0909090909091) internal successors, (1035), 11 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:50,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 209.0) internal successors, (2508), 12 states have internal predecessors, (2508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:50,370 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 209.0) internal successors, (2508), 12 states have internal predecessors, (2508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:50,370 INFO L175 Difference]: Start difference. First operand has 97 places, 80 transitions, 663 flow. Second operand 11 states and 1035 transitions. [2023-11-19 07:42:50,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 111 transitions, 1013 flow [2023-11-19 07:42:50,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 111 transitions, 984 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-11-19 07:42:50,384 INFO L231 Difference]: Finished difference. Result has 104 places, 79 transitions, 703 flow [2023-11-19 07:42:50,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=618, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=703, PETRI_PLACES=104, PETRI_TRANSITIONS=79} [2023-11-19 07:42:50,386 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 72 predicate places. [2023-11-19 07:42:50,386 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 79 transitions, 703 flow [2023-11-19 07:42:50,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 88.375) internal successors, (707), 8 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:50,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:42:50,389 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:42:50,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 07:42:50,389 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-19 07:42:50,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:50,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1767408064, now seen corresponding path program 1 times [2023-11-19 07:42:50,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:50,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251176424] [2023-11-19 07:42:50,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:50,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:50,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:50,740 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-19 07:42:50,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:50,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251176424] [2023-11-19 07:42:50,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251176424] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:42:50,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:42:50,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:42:50,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368693753] [2023-11-19 07:42:50,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:42:50,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:42:50,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:50,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:42:50,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:42:50,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 209 [2023-11-19 07:42:50,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 79 transitions, 703 flow. Second operand has 8 states, 8 states have (on average 87.375) internal successors, (699), 8 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:50,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:42:50,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 209 [2023-11-19 07:42:50,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:42:51,384 INFO L124 PetriNetUnfolderBase]: 511/1049 cut-off events. [2023-11-19 07:42:51,384 INFO L125 PetriNetUnfolderBase]: For 4223/4223 co-relation queries the response was YES. [2023-11-19 07:42:51,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4337 conditions, 1049 events. 511/1049 cut-off events. For 4223/4223 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 5726 event pairs, 117 based on Foata normal form. 0/851 useless extension candidates. Maximal degree in co-relation 4261. Up to 751 conditions per place. [2023-11-19 07:42:51,397 INFO L140 encePairwiseOnDemand]: 197/209 looper letters, 79 selfloop transitions, 45 changer transitions 0/124 dead transitions. [2023-11-19 07:42:51,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 124 transitions, 1285 flow [2023-11-19 07:42:51,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:42:51,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-19 07:42:51,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 762 transitions. [2023-11-19 07:42:51,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4557416267942584 [2023-11-19 07:42:51,401 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 762 transitions. [2023-11-19 07:42:51,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 762 transitions. [2023-11-19 07:42:51,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:42:51,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 762 transitions. [2023-11-19 07:42:51,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 95.25) internal successors, (762), 8 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:51,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 209.0) internal successors, (1881), 9 states have internal predecessors, (1881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:51,409 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 209.0) internal successors, (1881), 9 states have internal predecessors, (1881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:51,409 INFO L175 Difference]: Start difference. First operand has 104 places, 79 transitions, 703 flow. Second operand 8 states and 762 transitions. [2023-11-19 07:42:51,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 124 transitions, 1285 flow [2023-11-19 07:42:51,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 124 transitions, 1216 flow, removed 6 selfloop flow, removed 8 redundant places. [2023-11-19 07:42:51,425 INFO L231 Difference]: Finished difference. Result has 107 places, 98 transitions, 1022 flow [2023-11-19 07:42:51,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=652, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1022, PETRI_PLACES=107, PETRI_TRANSITIONS=98} [2023-11-19 07:42:51,426 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 75 predicate places. [2023-11-19 07:42:51,426 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 98 transitions, 1022 flow [2023-11-19 07:42:51,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 87.375) internal successors, (699), 8 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:51,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:42:51,427 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:42:51,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-19 07:42:51,428 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-19 07:42:51,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:51,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1767408065, now seen corresponding path program 1 times [2023-11-19 07:42:51,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:51,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020026635] [2023-11-19 07:42:51,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:51,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:51,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:51,788 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-19 07:42:51,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:51,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020026635] [2023-11-19 07:42:51,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020026635] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:42:51,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:42:51,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:42:51,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801738344] [2023-11-19 07:42:51,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:42:51,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:42:51,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:51,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:42:51,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:42:51,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 209 [2023-11-19 07:42:51,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 98 transitions, 1022 flow. Second operand has 8 states, 8 states have (on average 88.375) internal successors, (707), 8 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:51,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:42:51,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 209 [2023-11-19 07:42:51,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:42:52,502 INFO L124 PetriNetUnfolderBase]: 501/1067 cut-off events. [2023-11-19 07:42:52,502 INFO L125 PetriNetUnfolderBase]: For 5917/5917 co-relation queries the response was YES. [2023-11-19 07:42:52,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5193 conditions, 1067 events. 501/1067 cut-off events. For 5917/5917 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 6054 event pairs, 160 based on Foata normal form. 10/925 useless extension candidates. Maximal degree in co-relation 5112. Up to 903 conditions per place. [2023-11-19 07:42:52,516 INFO L140 encePairwiseOnDemand]: 199/209 looper letters, 99 selfloop transitions, 32 changer transitions 0/131 dead transitions. [2023-11-19 07:42:52,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 131 transitions, 1535 flow [2023-11-19 07:42:52,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:42:52,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-19 07:42:52,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 765 transitions. [2023-11-19 07:42:52,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45753588516746413 [2023-11-19 07:42:52,522 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 765 transitions. [2023-11-19 07:42:52,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 765 transitions. [2023-11-19 07:42:52,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:42:52,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 765 transitions. [2023-11-19 07:42:52,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 95.625) internal successors, (765), 8 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:52,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 209.0) internal successors, (1881), 9 states have internal predecessors, (1881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:52,530 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 209.0) internal successors, (1881), 9 states have internal predecessors, (1881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:52,530 INFO L175 Difference]: Start difference. First operand has 107 places, 98 transitions, 1022 flow. Second operand 8 states and 765 transitions. [2023-11-19 07:42:52,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 131 transitions, 1535 flow [2023-11-19 07:42:52,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 131 transitions, 1509 flow, removed 7 selfloop flow, removed 2 redundant places. [2023-11-19 07:42:52,554 INFO L231 Difference]: Finished difference. Result has 114 places, 107 transitions, 1205 flow [2023-11-19 07:42:52,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=996, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1205, PETRI_PLACES=114, PETRI_TRANSITIONS=107} [2023-11-19 07:42:52,556 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 82 predicate places. [2023-11-19 07:42:52,556 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 107 transitions, 1205 flow [2023-11-19 07:42:52,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 88.375) internal successors, (707), 8 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:52,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:42:52,557 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:42:52,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-19 07:42:52,557 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-19 07:42:52,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:52,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1765505285, now seen corresponding path program 2 times [2023-11-19 07:42:52,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:52,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103632683] [2023-11-19 07:42:52,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:52,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:52,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:52,910 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-19 07:42:52,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:52,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103632683] [2023-11-19 07:42:52,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103632683] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:42:52,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:42:52,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:42:52,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49389817] [2023-11-19 07:42:52,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:42:52,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:42:52,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:52,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:42:52,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:42:53,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 209 [2023-11-19 07:42:53,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 107 transitions, 1205 flow. Second operand has 8 states, 8 states have (on average 88.375) internal successors, (707), 8 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:53,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:42:53,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 209 [2023-11-19 07:42:53,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:42:53,725 INFO L124 PetriNetUnfolderBase]: 538/1129 cut-off events. [2023-11-19 07:42:53,725 INFO L125 PetriNetUnfolderBase]: For 7047/7047 co-relation queries the response was YES. [2023-11-19 07:42:53,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5718 conditions, 1129 events. 538/1129 cut-off events. For 7047/7047 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 6410 event pairs, 180 based on Foata normal form. 11/986 useless extension candidates. Maximal degree in co-relation 5634. Up to 917 conditions per place. [2023-11-19 07:42:53,743 INFO L140 encePairwiseOnDemand]: 199/209 looper letters, 103 selfloop transitions, 46 changer transitions 0/149 dead transitions. [2023-11-19 07:42:53,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 149 transitions, 1850 flow [2023-11-19 07:42:53,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 07:42:53,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-19 07:42:53,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1033 transitions. [2023-11-19 07:42:53,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4493257938234015 [2023-11-19 07:42:53,747 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1033 transitions. [2023-11-19 07:42:53,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1033 transitions. [2023-11-19 07:42:53,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:42:53,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1033 transitions. [2023-11-19 07:42:53,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 93.9090909090909) internal successors, (1033), 11 states have internal predecessors, (1033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:53,757 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 209.0) internal successors, (2508), 12 states have internal predecessors, (2508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:53,758 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 209.0) internal successors, (2508), 12 states have internal predecessors, (2508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:53,759 INFO L175 Difference]: Start difference. First operand has 114 places, 107 transitions, 1205 flow. Second operand 11 states and 1033 transitions. [2023-11-19 07:42:53,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 149 transitions, 1850 flow [2023-11-19 07:42:53,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 149 transitions, 1816 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-19 07:42:53,789 INFO L231 Difference]: Finished difference. Result has 124 places, 122 transitions, 1531 flow [2023-11-19 07:42:53,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=1177, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1531, PETRI_PLACES=124, PETRI_TRANSITIONS=122} [2023-11-19 07:42:53,790 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 92 predicate places. [2023-11-19 07:42:53,790 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 122 transitions, 1531 flow [2023-11-19 07:42:53,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 88.375) internal successors, (707), 8 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:53,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:42:53,791 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:42:53,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-19 07:42:53,791 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-19 07:42:53,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:53,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1765620604, now seen corresponding path program 2 times [2023-11-19 07:42:53,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:53,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698092511] [2023-11-19 07:42:53,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:53,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:53,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:54,082 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-19 07:42:54,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:54,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698092511] [2023-11-19 07:42:54,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698092511] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:42:54,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:42:54,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:42:54,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344894511] [2023-11-19 07:42:54,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:42:54,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:42:54,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:54,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:42:54,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:42:54,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 209 [2023-11-19 07:42:54,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 122 transitions, 1531 flow. Second operand has 8 states, 8 states have (on average 87.375) internal successors, (699), 8 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:54,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:42:54,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 209 [2023-11-19 07:42:54,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:42:54,896 INFO L124 PetriNetUnfolderBase]: 561/1174 cut-off events. [2023-11-19 07:42:54,896 INFO L125 PetriNetUnfolderBase]: For 9884/9884 co-relation queries the response was YES. [2023-11-19 07:42:54,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6586 conditions, 1174 events. 561/1174 cut-off events. For 9884/9884 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 6781 event pairs, 126 based on Foata normal form. 12/1030 useless extension candidates. Maximal degree in co-relation 6496. Up to 858 conditions per place. [2023-11-19 07:42:54,923 INFO L140 encePairwiseOnDemand]: 197/209 looper letters, 94 selfloop transitions, 63 changer transitions 0/157 dead transitions. [2023-11-19 07:42:54,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 157 transitions, 2157 flow [2023-11-19 07:42:54,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 07:42:54,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-19 07:42:54,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1028 transitions. [2023-11-19 07:42:54,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44715093518921273 [2023-11-19 07:42:54,926 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1028 transitions. [2023-11-19 07:42:54,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1028 transitions. [2023-11-19 07:42:54,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:42:54,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1028 transitions. [2023-11-19 07:42:54,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 93.45454545454545) internal successors, (1028), 11 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:54,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 209.0) internal successors, (2508), 12 states have internal predecessors, (2508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:54,954 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 209.0) internal successors, (2508), 12 states have internal predecessors, (2508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:54,954 INFO L175 Difference]: Start difference. First operand has 124 places, 122 transitions, 1531 flow. Second operand 11 states and 1028 transitions. [2023-11-19 07:42:54,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 157 transitions, 2157 flow [2023-11-19 07:42:54,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 157 transitions, 2136 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-11-19 07:42:54,988 INFO L231 Difference]: Finished difference. Result has 134 places, 130 transitions, 1878 flow [2023-11-19 07:42:54,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=1510, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1878, PETRI_PLACES=134, PETRI_TRANSITIONS=130} [2023-11-19 07:42:54,989 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 102 predicate places. [2023-11-19 07:42:54,990 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 130 transitions, 1878 flow [2023-11-19 07:42:54,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 87.375) internal successors, (699), 8 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:54,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:42:54,990 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:42:54,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-19 07:42:54,991 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-19 07:42:54,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:54,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1765428095, now seen corresponding path program 3 times [2023-11-19 07:42:54,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:54,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470916324] [2023-11-19 07:42:54,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:54,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:55,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:55,277 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-19 07:42:55,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:55,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470916324] [2023-11-19 07:42:55,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470916324] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:42:55,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:42:55,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:42:55,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495100162] [2023-11-19 07:42:55,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:42:55,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:42:55,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:55,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:42:55,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:42:55,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 209 [2023-11-19 07:42:55,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 130 transitions, 1878 flow. Second operand has 8 states, 8 states have (on average 88.375) internal successors, (707), 8 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:55,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:42:55,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 209 [2023-11-19 07:42:55,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:42:56,127 INFO L124 PetriNetUnfolderBase]: 598/1244 cut-off events. [2023-11-19 07:42:56,128 INFO L125 PetriNetUnfolderBase]: For 13587/13587 co-relation queries the response was YES. [2023-11-19 07:42:56,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7610 conditions, 1244 events. 598/1244 cut-off events. For 13587/13587 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 7172 event pairs, 166 based on Foata normal form. 9/1103 useless extension candidates. Maximal degree in co-relation 7516. Up to 942 conditions per place. [2023-11-19 07:42:56,148 INFO L140 encePairwiseOnDemand]: 199/209 looper letters, 122 selfloop transitions, 60 changer transitions 0/182 dead transitions. [2023-11-19 07:42:56,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 182 transitions, 2680 flow [2023-11-19 07:42:56,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 07:42:56,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-19 07:42:56,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1049 transitions. [2023-11-19 07:42:56,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4562853414528056 [2023-11-19 07:42:56,153 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1049 transitions. [2023-11-19 07:42:56,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1049 transitions. [2023-11-19 07:42:56,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:42:56,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1049 transitions. [2023-11-19 07:42:56,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 95.36363636363636) internal successors, (1049), 11 states have internal predecessors, (1049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:56,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 209.0) internal successors, (2508), 12 states have internal predecessors, (2508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:56,163 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 209.0) internal successors, (2508), 12 states have internal predecessors, (2508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:56,163 INFO L175 Difference]: Start difference. First operand has 134 places, 130 transitions, 1878 flow. Second operand 11 states and 1049 transitions. [2023-11-19 07:42:56,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 182 transitions, 2680 flow [2023-11-19 07:42:56,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 182 transitions, 2617 flow, removed 12 selfloop flow, removed 7 redundant places. [2023-11-19 07:42:56,210 INFO L231 Difference]: Finished difference. Result has 140 places, 141 transitions, 2184 flow [2023-11-19 07:42:56,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=1821, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2184, PETRI_PLACES=140, PETRI_TRANSITIONS=141} [2023-11-19 07:42:56,211 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 108 predicate places. [2023-11-19 07:42:56,211 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 141 transitions, 2184 flow [2023-11-19 07:42:56,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 88.375) internal successors, (707), 8 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:56,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:42:56,212 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:42:56,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-19 07:42:56,212 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-19 07:42:56,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:56,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1765428094, now seen corresponding path program 3 times [2023-11-19 07:42:56,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:56,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984472040] [2023-11-19 07:42:56,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:56,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:56,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:56,506 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-19 07:42:56,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:56,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984472040] [2023-11-19 07:42:56,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984472040] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:42:56,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:42:56,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:42:56,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812587203] [2023-11-19 07:42:56,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:42:56,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:42:56,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:56,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:42:56,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:42:56,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 209 [2023-11-19 07:42:56,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 141 transitions, 2184 flow. Second operand has 8 states, 8 states have (on average 87.375) internal successors, (699), 8 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:56,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:42:56,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 209 [2023-11-19 07:42:56,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:42:57,306 INFO L124 PetriNetUnfolderBase]: 563/1183 cut-off events. [2023-11-19 07:42:57,307 INFO L125 PetriNetUnfolderBase]: For 15609/15609 co-relation queries the response was YES. [2023-11-19 07:42:57,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7526 conditions, 1183 events. 563/1183 cut-off events. For 15609/15609 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 6752 event pairs, 53 based on Foata normal form. 38/1093 useless extension candidates. Maximal degree in co-relation 7429. Up to 693 conditions per place. [2023-11-19 07:42:57,322 INFO L140 encePairwiseOnDemand]: 196/209 looper letters, 101 selfloop transitions, 86 changer transitions 0/187 dead transitions. [2023-11-19 07:42:57,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 187 transitions, 2859 flow [2023-11-19 07:42:57,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 07:42:57,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-19 07:42:57,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1047 transitions. [2023-11-19 07:42:57,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45541539799913006 [2023-11-19 07:42:57,326 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1047 transitions. [2023-11-19 07:42:57,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1047 transitions. [2023-11-19 07:42:57,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:42:57,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1047 transitions. [2023-11-19 07:42:57,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 95.18181818181819) internal successors, (1047), 11 states have internal predecessors, (1047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:57,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 209.0) internal successors, (2508), 12 states have internal predecessors, (2508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:57,333 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 209.0) internal successors, (2508), 12 states have internal predecessors, (2508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:57,333 INFO L175 Difference]: Start difference. First operand has 140 places, 141 transitions, 2184 flow. Second operand 11 states and 1047 transitions. [2023-11-19 07:42:57,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 187 transitions, 2859 flow [2023-11-19 07:42:57,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 187 transitions, 2680 flow, removed 30 selfloop flow, removed 8 redundant places. [2023-11-19 07:42:57,381 INFO L231 Difference]: Finished difference. Result has 146 places, 142 transitions, 2307 flow [2023-11-19 07:42:57,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=1855, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2307, PETRI_PLACES=146, PETRI_TRANSITIONS=142} [2023-11-19 07:42:57,382 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 114 predicate places. [2023-11-19 07:42:57,383 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 142 transitions, 2307 flow [2023-11-19 07:42:57,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 87.375) internal successors, (699), 8 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:57,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:42:57,383 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:42:57,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-19 07:42:57,384 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-19 07:42:57,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:57,384 INFO L85 PathProgramCache]: Analyzing trace with hash -2092054522, now seen corresponding path program 1 times [2023-11-19 07:42:57,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:57,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707214208] [2023-11-19 07:42:57,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:57,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:57,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:57,696 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-19 07:42:57,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:57,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707214208] [2023-11-19 07:42:57,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707214208] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:42:57,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167417942] [2023-11-19 07:42:57,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:57,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:42:57,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee89793-625c-4904-a4eb-296f9794d9d9/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:42:57,699 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee89793-625c-4904-a4eb-296f9794d9d9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:42:57,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ee89793-625c-4904-a4eb-296f9794d9d9/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:42:57,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:57,832 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-19 07:42:57,836 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:42:57,846 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 [2023-11-19 07:42:57,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:42:57,912 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 10 [2023-11-19 07:42:57,985 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 [2023-11-19 07:43:02,182 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-19 07:43:02,182 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:43:06,730 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-19 07:43:06,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167417942] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:43:06,730 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:43:06,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2023-11-19 07:43:06,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245797302] [2023-11-19 07:43:06,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:43:06,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-19 07:43:06,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:06,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-19 07:43:06,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=246, Unknown=9, NotChecked=0, Total=342 [2023-11-19 07:43:08,198 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-19 07:43:09,791 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-19 07:43:11,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-19 07:43:13,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-19 07:43:15,504 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-19 07:43:16,958 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-19 07:43:18,713 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-19 07:43:20,607 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-19 07:43:22,285 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-19 07:43:24,356 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-19 07:43:26,397 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-19 07:43:27,976 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-19 07:43:29,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]