/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/goblint-regression/09-regions_24-evilcollapse_nr.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 04:49:11,528 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 04:49:11,621 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-27 04:49:11,625 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 04:49:11,626 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 04:49:11,658 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 04:49:11,659 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 04:49:11,660 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 04:49:11,660 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 04:49:11,664 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 04:49:11,664 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 04:49:11,665 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 04:49:11,665 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 04:49:11,666 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 04:49:11,666 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 04:49:11,667 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 04:49:11,667 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 04:49:11,667 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 04:49:11,667 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 04:49:11,668 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 04:49:11,668 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 04:49:11,669 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 04:49:11,669 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 04:49:11,669 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 04:49:11,670 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 04:49:11,670 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 04:49:11,670 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 04:49:11,670 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 04:49:11,671 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 04:49:11,671 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 04:49:11,672 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 04:49:11,672 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 04:49:11,672 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 04:49:11,672 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 04:49:11,672 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 04:49:11,673 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 04:49:12,009 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 04:49:12,037 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 04:49:12,038 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 04:49:12,039 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 04:49:12,040 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 04:49:12,041 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/09-regions_24-evilcollapse_nr.i [2023-08-27 04:49:13,208 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 04:49:13,525 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 04:49:13,526 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/09-regions_24-evilcollapse_nr.i [2023-08-27 04:49:13,547 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d42ef9353/ab66ca49ccc34ef6bec557e9a714a7bb/FLAG8e4363e65 [2023-08-27 04:49:13,564 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d42ef9353/ab66ca49ccc34ef6bec557e9a714a7bb [2023-08-27 04:49:13,568 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 04:49:13,570 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 04:49:13,574 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 04:49:13,574 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 04:49:13,577 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 04:49:13,578 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:49:13" (1/1) ... [2023-08-27 04:49:13,579 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dd14441 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:49:13, skipping insertion in model container [2023-08-27 04:49:13,579 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:49:13" (1/1) ... [2023-08-27 04:49:13,642 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 04:49:14,072 WARN L1561 CHandler]: Possible shadowing of function new [2023-08-27 04:49:14,073 WARN L1561 CHandler]: Possible shadowing of function new [2023-08-27 04:49:14,074 WARN L1561 CHandler]: Possible shadowing of function new [2023-08-27 04:49:14,076 WARN L1561 CHandler]: Possible shadowing of function new [2023-08-27 04:49:14,120 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 04:49:14,143 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 04:49:14,170 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [249] [2023-08-27 04:49:14,172 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [249] [2023-08-27 04:49:14,204 WARN L1561 CHandler]: Possible shadowing of function new [2023-08-27 04:49:14,204 WARN L1561 CHandler]: Possible shadowing of function new [2023-08-27 04:49:14,204 WARN L1561 CHandler]: Possible shadowing of function new [2023-08-27 04:49:14,205 WARN L1561 CHandler]: Possible shadowing of function new [2023-08-27 04:49:14,218 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: long [1071] [2023-08-27 04:49:14,222 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 04:49:14,292 INFO L206 MainTranslator]: Completed translation [2023-08-27 04:49:14,292 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:49:14 WrapperNode [2023-08-27 04:49:14,293 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 04:49:14,294 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 04:49:14,294 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 04:49:14,294 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 04:49:14,301 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:49:14" (1/1) ... [2023-08-27 04:49:14,336 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:49:14" (1/1) ... [2023-08-27 04:49:14,377 INFO L138 Inliner]: procedures = 273, calls = 38, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 172 [2023-08-27 04:49:14,377 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 04:49:14,378 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 04:49:14,379 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 04:49:14,379 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 04:49:14,387 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:49:14" (1/1) ... [2023-08-27 04:49:14,387 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:49:14" (1/1) ... [2023-08-27 04:49:14,399 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:49:14" (1/1) ... [2023-08-27 04:49:14,399 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:49:14" (1/1) ... [2023-08-27 04:49:14,407 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:49:14" (1/1) ... [2023-08-27 04:49:14,423 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:49:14" (1/1) ... [2023-08-27 04:49:14,429 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:49:14" (1/1) ... [2023-08-27 04:49:14,430 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:49:14" (1/1) ... [2023-08-27 04:49:14,433 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 04:49:14,434 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 04:49:14,435 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 04:49:14,435 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 04:49:14,435 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:49:14" (1/1) ... [2023-08-27 04:49:14,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 04:49:14,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 04:49:14,469 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-27 04:49:14,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-27 04:49:14,494 INFO L130 BoogieDeclarations]: Found specification of procedure f [2023-08-27 04:49:14,494 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2023-08-27 04:49:14,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 04:49:14,495 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-27 04:49:14,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 04:49:14,495 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 04:49:14,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 04:49:14,495 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-27 04:49:14,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-27 04:49:14,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 04:49:14,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-27 04:49:14,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 04:49:14,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 04:49:14,497 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 04:49:14,658 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 04:49:14,660 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 04:49:15,066 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 04:49:15,077 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 04:49:15,077 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-27 04:49:15,079 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:49:15 BoogieIcfgContainer [2023-08-27 04:49:15,080 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 04:49:15,082 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 04:49:15,082 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 04:49:15,085 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 04:49:15,086 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 04:49:13" (1/3) ... [2023-08-27 04:49:15,086 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17047a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 04:49:15, skipping insertion in model container [2023-08-27 04:49:15,087 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:49:14" (2/3) ... [2023-08-27 04:49:15,087 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17047a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 04:49:15, skipping insertion in model container [2023-08-27 04:49:15,088 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:49:15" (3/3) ... [2023-08-27 04:49:15,090 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_24-evilcollapse_nr.i [2023-08-27 04:49:15,105 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 04:49:15,105 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-08-27 04:49:15,105 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 04:49:15,178 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 04:49:15,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 232 places, 242 transitions, 494 flow [2023-08-27 04:49:15,297 INFO L124 PetriNetUnfolderBase]: 17/240 cut-off events. [2023-08-27 04:49:15,297 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 04:49:15,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247 conditions, 240 events. 17/240 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 542 event pairs, 0 based on Foata normal form. 0/209 useless extension candidates. Maximal degree in co-relation 183. Up to 2 conditions per place. [2023-08-27 04:49:15,304 INFO L82 GeneralOperation]: Start removeDead. Operand has 232 places, 242 transitions, 494 flow [2023-08-27 04:49:15,316 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 230 places, 240 transitions, 486 flow [2023-08-27 04:49:15,318 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 04:49:15,329 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 230 places, 240 transitions, 486 flow [2023-08-27 04:49:15,331 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 230 places, 240 transitions, 486 flow [2023-08-27 04:49:15,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 230 places, 240 transitions, 486 flow [2023-08-27 04:49:15,407 INFO L124 PetriNetUnfolderBase]: 17/240 cut-off events. [2023-08-27 04:49:15,408 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 04:49:15,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247 conditions, 240 events. 17/240 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 543 event pairs, 0 based on Foata normal form. 0/209 useless extension candidates. Maximal degree in co-relation 183. Up to 2 conditions per place. [2023-08-27 04:49:15,417 INFO L119 LiptonReduction]: Number of co-enabled transitions 7154 [2023-08-27 04:49:36,870 WARN L234 SmtUtils]: Spent 9.62s on a formula simplification. DAG size of input: 183 DAG size of output: 181 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-27 04:49:50,367 WARN L234 SmtUtils]: Spent 8.98s on a formula simplification. DAG size of input: 183 DAG size of output: 181 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-27 04:49:55,665 WARN L234 SmtUtils]: Spent 5.29s on a formula simplification that was a NOOP. DAG size: 177 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-27 04:50:07,828 WARN L234 SmtUtils]: Spent 11.93s on a formula simplification. DAG size of input: 186 DAG size of output: 184 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-27 04:50:24,262 WARN L234 SmtUtils]: Spent 11.70s on a formula simplification. DAG size of input: 186 DAG size of output: 184 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-27 04:50:31,783 WARN L234 SmtUtils]: Spent 7.52s on a formula simplification that was a NOOP. DAG size: 180 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-27 04:50:31,790 INFO L134 LiptonReduction]: Checked pairs total: 7085 [2023-08-27 04:50:31,790 INFO L136 LiptonReduction]: Total number of compositions: 262 [2023-08-27 04:50:31,802 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 04:50:31,806 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@25b1d7c8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 04:50:31,807 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-08-27 04:50:31,812 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 04:50:31,813 INFO L124 PetriNetUnfolderBase]: 2/6 cut-off events. [2023-08-27 04:50:31,813 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 04:50:31,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:50:31,814 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 04:50:31,815 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 04:50:31,819 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:50:31,819 INFO L85 PathProgramCache]: Analyzing trace with hash 817299, now seen corresponding path program 1 times [2023-08-27 04:50:31,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:50:31,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232257794] [2023-08-27 04:50:31,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:50:31,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:50:31,972 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 04:50:31,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1430885276] [2023-08-27 04:50:31,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:50:31,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 04:50:31,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 04:50:31,981 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 04:50:32,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-27 04:50:32,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:50:32,127 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-27 04:50:32,131 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 04:50:32,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:50:32,153 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 04:50:32,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:50:32,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232257794] [2023-08-27 04:50:32,153 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 04:50:32,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430885276] [2023-08-27 04:50:32,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430885276] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:50:32,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 04:50:32,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 04:50:32,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041899959] [2023-08-27 04:50:32,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:50:32,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 04:50:32,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:50:32,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 04:50:32,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 04:50:32,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 504 [2023-08-27 04:50:32,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 39 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 216.0) internal successors, (648), 3 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) [2023-08-27 04:50:32,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:50:32,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 504 [2023-08-27 04:50:32,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:50:32,605 INFO L124 PetriNetUnfolderBase]: 436/710 cut-off events. [2023-08-27 04:50:32,605 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-08-27 04:50:32,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1448 conditions, 710 events. 436/710 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2776 event pairs, 340 based on Foata normal form. 0/425 useless extension candidates. Maximal degree in co-relation 1412. Up to 706 conditions per place. [2023-08-27 04:50:32,615 INFO L140 encePairwiseOnDemand]: 495/504 looper letters, 39 selfloop transitions, 3 changer transitions 0/42 dead transitions. [2023-08-27 04:50:32,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 42 transitions, 174 flow [2023-08-27 04:50:32,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 04:50:32,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 04:50:32,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 694 transitions. [2023-08-27 04:50:32,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.458994708994709 [2023-08-27 04:50:32,637 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 694 transitions. [2023-08-27 04:50:32,638 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 694 transitions. [2023-08-27 04:50:32,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:50:32,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 694 transitions. [2023-08-27 04:50:32,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 231.33333333333334) internal successors, (694), 3 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:50:32,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 504.0) internal successors, (2016), 4 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:50:32,657 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 504.0) internal successors, (2016), 4 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:50:32,659 INFO L175 Difference]: Start difference. First operand has 40 places, 39 transitions, 84 flow. Second operand 3 states and 694 transitions. [2023-08-27 04:50:32,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 42 transitions, 174 flow [2023-08-27 04:50:32,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 42 transitions, 172 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 04:50:32,664 INFO L231 Difference]: Finished difference. Result has 41 places, 40 transitions, 110 flow [2023-08-27 04:50:32,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=41, PETRI_TRANSITIONS=40} [2023-08-27 04:50:32,670 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2023-08-27 04:50:32,673 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 40 transitions, 110 flow [2023-08-27 04:50:32,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 216.0) internal successors, (648), 3 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) [2023-08-27 04:50:32,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:50:32,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 04:50:32,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-27 04:50:32,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-08-27 04:50:32,878 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 04:50:32,878 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:50:32,878 INFO L85 PathProgramCache]: Analyzing trace with hash 817494, now seen corresponding path program 1 times [2023-08-27 04:50:32,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:50:32,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747573748] [2023-08-27 04:50:32,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:50:32,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:50:32,926 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 04:50:32,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [780571490] [2023-08-27 04:50:32,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:50:32,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 04:50:32,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 04:50:32,929 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 04:50:32,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-27 04:50:33,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:50:33,085 INFO L262 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-27 04:50:33,086 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 04:50:33,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:50:33,091 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 04:50:33,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:50:33,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747573748] [2023-08-27 04:50:33,091 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 04:50:33,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780571490] [2023-08-27 04:50:33,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780571490] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:50:33,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 04:50:33,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 04:50:33,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88243954] [2023-08-27 04:50:33,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:50:33,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 04:50:33,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:50:33,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 04:50:33,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 04:50:33,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 504 [2023-08-27 04:50:33,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 40 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 219.0) internal successors, (657), 3 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:50:33,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:50:33,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 504 [2023-08-27 04:50:33,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:50:33,311 INFO L124 PetriNetUnfolderBase]: 435/708 cut-off events. [2023-08-27 04:50:33,311 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 04:50:33,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1454 conditions, 708 events. 435/708 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2746 event pairs, 340 based on Foata normal form. 2/430 useless extension candidates. Maximal degree in co-relation 1438. Up to 703 conditions per place. [2023-08-27 04:50:33,316 INFO L140 encePairwiseOnDemand]: 499/504 looper letters, 33 selfloop transitions, 5 changer transitions 0/38 dead transitions. [2023-08-27 04:50:33,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 38 transitions, 176 flow [2023-08-27 04:50:33,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 04:50:33,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 04:50:33,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 692 transitions. [2023-08-27 04:50:33,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4576719576719577 [2023-08-27 04:50:33,320 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 692 transitions. [2023-08-27 04:50:33,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 692 transitions. [2023-08-27 04:50:33,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:50:33,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 692 transitions. [2023-08-27 04:50:33,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 230.66666666666666) internal successors, (692), 3 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:50:33,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 504.0) internal successors, (2016), 4 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:50:33,327 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 504.0) internal successors, (2016), 4 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:50:33,327 INFO L175 Difference]: Start difference. First operand has 41 places, 40 transitions, 110 flow. Second operand 3 states and 692 transitions. [2023-08-27 04:50:33,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 38 transitions, 176 flow [2023-08-27 04:50:33,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 38 transitions, 172 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 04:50:33,329 INFO L231 Difference]: Finished difference. Result has 40 places, 38 transitions, 106 flow [2023-08-27 04:50:33,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=40, PETRI_TRANSITIONS=38} [2023-08-27 04:50:33,331 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 0 predicate places. [2023-08-27 04:50:33,331 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 38 transitions, 106 flow [2023-08-27 04:50:33,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 219.0) internal successors, (657), 3 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:50:33,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:50:33,332 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2023-08-27 04:50:33,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-27 04:50:33,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-08-27 04:50:33,538 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 04:50:33,539 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:50:33,539 INFO L85 PathProgramCache]: Analyzing trace with hash 785618910, now seen corresponding path program 1 times [2023-08-27 04:50:33,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:50:33,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406075621] [2023-08-27 04:50:33,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:50:33,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:50:33,574 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 04:50:33,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [90985006] [2023-08-27 04:50:33,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:50:33,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 04:50:33,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 04:50:33,579 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 04:50:33,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-27 04:50:33,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:50:33,731 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-27 04:50:33,732 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 04:50:33,742 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:50:33,742 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 04:50:33,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:50:33,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406075621] [2023-08-27 04:50:33,743 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 04:50:33,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90985006] [2023-08-27 04:50:33,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90985006] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:50:33,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 04:50:33,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 04:50:33,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233763072] [2023-08-27 04:50:33,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:50:33,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 04:50:33,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:50:33,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 04:50:33,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 04:50:33,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 504 [2023-08-27 04:50:33,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 38 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 219.66666666666666) internal successors, (659), 3 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:50:33,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:50:33,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 504 [2023-08-27 04:50:33,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:50:34,017 INFO L124 PetriNetUnfolderBase]: 435/712 cut-off events. [2023-08-27 04:50:34,018 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 04:50:34,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1468 conditions, 712 events. 435/712 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2764 event pairs, 340 based on Foata normal form. 2/434 useless extension candidates. Maximal degree in co-relation 1419. Up to 709 conditions per place. [2023-08-27 04:50:34,022 INFO L140 encePairwiseOnDemand]: 499/504 looper letters, 39 selfloop transitions, 2 changer transitions 0/41 dead transitions. [2023-08-27 04:50:34,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 41 transitions, 198 flow [2023-08-27 04:50:34,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 04:50:34,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 04:50:34,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 697 transitions. [2023-08-27 04:50:34,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.460978835978836 [2023-08-27 04:50:34,025 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 697 transitions. [2023-08-27 04:50:34,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 697 transitions. [2023-08-27 04:50:34,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:50:34,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 697 transitions. [2023-08-27 04:50:34,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 232.33333333333334) internal successors, (697), 3 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:50:34,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 504.0) internal successors, (2016), 4 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:50:34,031 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 504.0) internal successors, (2016), 4 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:50:34,031 INFO L175 Difference]: Start difference. First operand has 40 places, 38 transitions, 106 flow. Second operand 3 states and 697 transitions. [2023-08-27 04:50:34,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 41 transitions, 198 flow [2023-08-27 04:50:34,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 41 transitions, 188 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 04:50:34,033 INFO L231 Difference]: Finished difference. Result has 41 places, 39 transitions, 114 flow [2023-08-27 04:50:34,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=41, PETRI_TRANSITIONS=39} [2023-08-27 04:50:34,034 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2023-08-27 04:50:34,034 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 39 transitions, 114 flow [2023-08-27 04:50:34,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 219.66666666666666) internal successors, (659), 3 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:50:34,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:50:34,035 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-27 04:50:34,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-27 04:50:34,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 04:50:34,240 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 04:50:34,241 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:50:34,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1414916052, now seen corresponding path program 1 times [2023-08-27 04:50:34,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:50:34,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591332723] [2023-08-27 04:50:34,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:50:34,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:50:34,301 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 04:50:34,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [146882773] [2023-08-27 04:50:34,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:50:34,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 04:50:34,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 04:50:34,310 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 04:50:34,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-27 04:50:34,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:50:34,452 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-27 04:50:34,453 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 04:50:34,476 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:50:34,476 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 04:50:34,491 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:50:34,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:50:34,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591332723] [2023-08-27 04:50:34,492 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 04:50:34,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146882773] [2023-08-27 04:50:34,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146882773] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 04:50:34,492 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-27 04:50:34,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-08-27 04:50:34,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607750693] [2023-08-27 04:50:34,493 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-27 04:50:34,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 04:50:34,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:50:34,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 04:50:34,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-27 04:50:34,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 504 [2023-08-27 04:50:34,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 39 transitions, 114 flow. Second operand has 6 states, 6 states have (on average 219.5) internal successors, (1317), 6 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:50:34,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:50:34,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 504 [2023-08-27 04:50:34,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:50:34,918 INFO L124 PetriNetUnfolderBase]: 437/724 cut-off events. [2023-08-27 04:50:34,918 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 04:50:34,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1511 conditions, 724 events. 437/724 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2823 event pairs, 340 based on Foata normal form. 6/447 useless extension candidates. Maximal degree in co-relation 1435. Up to 707 conditions per place. [2023-08-27 04:50:34,923 INFO L140 encePairwiseOnDemand]: 497/504 looper letters, 43 selfloop transitions, 7 changer transitions 0/50 dead transitions. [2023-08-27 04:50:34,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 50 transitions, 258 flow [2023-08-27 04:50:34,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 04:50:34,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 04:50:34,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1366 transitions. [2023-08-27 04:50:34,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45171957671957674 [2023-08-27 04:50:34,927 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1366 transitions. [2023-08-27 04:50:34,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1366 transitions. [2023-08-27 04:50:34,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:50:34,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1366 transitions. [2023-08-27 04:50:34,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 227.66666666666666) internal successors, (1366), 6 states have internal predecessors, (1366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:50:34,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 504.0) internal successors, (3528), 7 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:50:34,937 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 504.0) internal successors, (3528), 7 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:50:34,937 INFO L175 Difference]: Start difference. First operand has 41 places, 39 transitions, 114 flow. Second operand 6 states and 1366 transitions. [2023-08-27 04:50:34,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 50 transitions, 258 flow [2023-08-27 04:50:34,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 50 transitions, 256 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 04:50:34,939 INFO L231 Difference]: Finished difference. Result has 49 places, 44 transitions, 188 flow [2023-08-27 04:50:34,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=188, PETRI_PLACES=49, PETRI_TRANSITIONS=44} [2023-08-27 04:50:34,940 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 9 predicate places. [2023-08-27 04:50:34,940 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 44 transitions, 188 flow [2023-08-27 04:50:34,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 219.5) internal successors, (1317), 6 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:50:34,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:50:34,942 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1] [2023-08-27 04:50:34,950 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-27 04:50:35,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 04:50:35,147 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 04:50:35,148 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:50:35,148 INFO L85 PathProgramCache]: Analyzing trace with hash -258458786, now seen corresponding path program 2 times [2023-08-27 04:50:35,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:50:35,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306328333] [2023-08-27 04:50:35,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:50:35,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:50:35,205 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 04:50:35,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [621974480] [2023-08-27 04:50:35,205 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 04:50:35,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 04:50:35,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 04:50:35,207 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 04:50:35,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-27 04:50:35,416 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 04:50:35,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 04:50:35,418 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-27 04:50:35,420 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 04:50:35,427 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-27 04:50:35,427 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 04:50:35,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:50:35,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306328333] [2023-08-27 04:50:35,428 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 04:50:35,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621974480] [2023-08-27 04:50:35,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621974480] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:50:35,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 04:50:35,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 04:50:35,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608070086] [2023-08-27 04:50:35,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:50:35,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 04:50:35,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:50:35,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 04:50:35,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 04:50:35,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 504 [2023-08-27 04:50:35,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 44 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:50:35,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:50:35,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 504 [2023-08-27 04:50:35,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:50:35,779 INFO L124 PetriNetUnfolderBase]: 437/722 cut-off events. [2023-08-27 04:50:35,779 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-08-27 04:50:35,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1548 conditions, 722 events. 437/722 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2804 event pairs, 340 based on Foata normal form. 1/441 useless extension candidates. Maximal degree in co-relation 1449. Up to 721 conditions per place. [2023-08-27 04:50:35,783 INFO L140 encePairwiseOnDemand]: 500/504 looper letters, 42 selfloop transitions, 2 changer transitions 0/44 dead transitions. [2023-08-27 04:50:35,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 44 transitions, 276 flow [2023-08-27 04:50:35,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 04:50:35,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 04:50:35,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 694 transitions. [2023-08-27 04:50:35,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.458994708994709 [2023-08-27 04:50:35,785 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 694 transitions. [2023-08-27 04:50:35,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 694 transitions. [2023-08-27 04:50:35,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:50:35,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 694 transitions. [2023-08-27 04:50:35,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 231.33333333333334) internal successors, (694), 3 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:50:35,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 504.0) internal successors, (2016), 4 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:50:35,791 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 504.0) internal successors, (2016), 4 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:50:35,791 INFO L175 Difference]: Start difference. First operand has 49 places, 44 transitions, 188 flow. Second operand 3 states and 694 transitions. [2023-08-27 04:50:35,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 44 transitions, 276 flow [2023-08-27 04:50:35,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 44 transitions, 266 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-27 04:50:35,794 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 188 flow [2023-08-27 04:50:35,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2023-08-27 04:50:35,795 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 11 predicate places. [2023-08-27 04:50:35,795 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 188 flow [2023-08-27 04:50:35,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:50:35,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:50:35,796 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1] [2023-08-27 04:50:35,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-27 04:50:36,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 04:50:36,001 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 04:50:36,002 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:50:36,002 INFO L85 PathProgramCache]: Analyzing trace with hash 577719030, now seen corresponding path program 3 times [2023-08-27 04:50:36,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:50:36,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741018738] [2023-08-27 04:50:36,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:50:36,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:50:36,078 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 04:50:36,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1210791463] [2023-08-27 04:50:36,078 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 04:50:36,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 04:50:36,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 04:50:36,080 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 04:50:36,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-27 04:50:36,383 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 04:50:36,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 04:50:36,385 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 04:50:36,387 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 04:50:36,422 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-27 04:50:36,422 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 04:50:36,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:50:36,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741018738] [2023-08-27 04:50:36,422 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 04:50:36,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210791463] [2023-08-27 04:50:36,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210791463] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:50:36,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 04:50:36,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 04:50:36,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655195186] [2023-08-27 04:50:36,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:50:36,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 04:50:36,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:50:36,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 04:50:36,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-27 04:50:36,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 504 [2023-08-27 04:50:36,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 188 flow. Second operand has 6 states, 6 states have (on average 210.16666666666666) internal successors, (1261), 6 states have internal predecessors, (1261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:50:36,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:50:36,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 504 [2023-08-27 04:50:36,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:50:36,736 INFO L124 PetriNetUnfolderBase]: 436/717 cut-off events. [2023-08-27 04:50:36,737 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2023-08-27 04:50:36,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1525 conditions, 717 events. 436/717 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2775 event pairs, 340 based on Foata normal form. 0/440 useless extension candidates. Maximal degree in co-relation 1443. Up to 698 conditions per place. [2023-08-27 04:50:36,741 INFO L140 encePairwiseOnDemand]: 496/504 looper letters, 40 selfloop transitions, 7 changer transitions 0/47 dead transitions. [2023-08-27 04:50:36,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 47 transitions, 294 flow [2023-08-27 04:50:36,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 04:50:36,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 04:50:36,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1295 transitions. [2023-08-27 04:50:36,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42824074074074076 [2023-08-27 04:50:36,745 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1295 transitions. [2023-08-27 04:50:36,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1295 transitions. [2023-08-27 04:50:36,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:50:36,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1295 transitions. [2023-08-27 04:50:36,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 215.83333333333334) internal successors, (1295), 6 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:50:36,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 504.0) internal successors, (3528), 7 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:50:36,753 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 504.0) internal successors, (3528), 7 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:50:36,753 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 188 flow. Second operand 6 states and 1295 transitions. [2023-08-27 04:50:36,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 47 transitions, 294 flow [2023-08-27 04:50:36,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 47 transitions, 286 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 04:50:36,756 INFO L231 Difference]: Finished difference. Result has 54 places, 43 transitions, 193 flow [2023-08-27 04:50:36,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=193, PETRI_PLACES=54, PETRI_TRANSITIONS=43} [2023-08-27 04:50:36,757 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 14 predicate places. [2023-08-27 04:50:36,757 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 43 transitions, 193 flow [2023-08-27 04:50:36,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 210.16666666666666) internal successors, (1261), 6 states have internal predecessors, (1261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:50:36,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:50:36,758 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1] [2023-08-27 04:50:36,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-27 04:50:36,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 04:50:36,965 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 04:50:36,965 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:50:36,965 INFO L85 PathProgramCache]: Analyzing trace with hash 577719143, now seen corresponding path program 1 times [2023-08-27 04:50:36,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:50:36,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407812028] [2023-08-27 04:50:36,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:50:36,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:50:37,027 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 04:50:37,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [141310634] [2023-08-27 04:50:37,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:50:37,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 04:50:37,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 04:50:37,029 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 04:50:37,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-27 04:50:37,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:50:37,495 INFO L262 TraceCheckSpWp]: Trace formula consists of 1296 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 04:50:37,497 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 04:50:37,532 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 04:50:37,532 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 04:50:37,593 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 04:50:37,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:50:37,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407812028] [2023-08-27 04:50:37,594 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 04:50:37,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141310634] [2023-08-27 04:50:37,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141310634] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 04:50:37,594 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-27 04:50:37,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-08-27 04:50:37,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737720427] [2023-08-27 04:50:37,595 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-27 04:50:37,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-27 04:50:37,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:50:37,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-27 04:50:37,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-08-27 04:50:37,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 504 [2023-08-27 04:50:37,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 43 transitions, 193 flow. Second operand has 12 states, 12 states have (on average 219.33333333333334) internal successors, (2632), 12 states have internal predecessors, (2632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:50:37,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:50:37,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 504 [2023-08-27 04:50:37,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:50:38,854 INFO L124 PetriNetUnfolderBase]: 436/735 cut-off events. [2023-08-27 04:50:38,855 INFO L125 PetriNetUnfolderBase]: For 237/237 co-relation queries the response was YES. [2023-08-27 04:50:38,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1613 conditions, 735 events. 436/735 cut-off events. For 237/237 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2944 event pairs, 340 based on Foata normal form. 12/470 useless extension candidates. Maximal degree in co-relation 1469. Up to 706 conditions per place. [2023-08-27 04:50:38,860 INFO L140 encePairwiseOnDemand]: 499/504 looper letters, 43 selfloop transitions, 14 changer transitions 0/57 dead transitions. [2023-08-27 04:50:38,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 57 transitions, 407 flow [2023-08-27 04:50:38,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 04:50:38,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 04:50:38,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2682 transitions. [2023-08-27 04:50:38,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44345238095238093 [2023-08-27 04:50:38,868 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2682 transitions. [2023-08-27 04:50:38,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2682 transitions. [2023-08-27 04:50:38,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:50:38,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2682 transitions. [2023-08-27 04:50:38,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 223.5) internal successors, (2682), 12 states have internal predecessors, (2682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:50:38,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 504.0) internal successors, (6552), 13 states have internal predecessors, (6552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:50:38,886 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 504.0) internal successors, (6552), 13 states have internal predecessors, (6552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:50:38,886 INFO L175 Difference]: Start difference. First operand has 54 places, 43 transitions, 193 flow. Second operand 12 states and 2682 transitions. [2023-08-27 04:50:38,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 57 transitions, 407 flow [2023-08-27 04:50:38,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 57 transitions, 401 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-27 04:50:38,893 INFO L231 Difference]: Finished difference. Result has 70 places, 50 transitions, 316 flow [2023-08-27 04:50:38,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=316, PETRI_PLACES=70, PETRI_TRANSITIONS=50} [2023-08-27 04:50:38,895 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 30 predicate places. [2023-08-27 04:50:38,895 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 50 transitions, 316 flow [2023-08-27 04:50:38,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 219.33333333333334) internal successors, (2632), 12 states have internal predecessors, (2632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:50:38,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:50:38,897 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 2, 1, 1, 1] [2023-08-27 04:50:38,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-27 04:50:39,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 04:50:39,105 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 04:50:39,106 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:50:39,106 INFO L85 PathProgramCache]: Analyzing trace with hash 918799911, now seen corresponding path program 2 times [2023-08-27 04:50:39,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:50:39,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964046591] [2023-08-27 04:50:39,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:50:39,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:50:39,221 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 04:50:39,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [392470629] [2023-08-27 04:50:39,221 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 04:50:39,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 04:50:39,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 04:50:39,225 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 04:50:39,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-27 04:50:40,017 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 04:50:40,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 04:50:40,030 INFO L262 TraceCheckSpWp]: Trace formula consists of 2700 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-27 04:50:40,034 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 04:50:40,144 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 23 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 04:50:40,145 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 04:50:40,329 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 23 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 04:50:40,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:50:40,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964046591] [2023-08-27 04:50:40,329 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 04:50:40,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392470629] [2023-08-27 04:50:40,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392470629] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 04:50:40,329 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-27 04:50:40,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-08-27 04:50:40,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271193390] [2023-08-27 04:50:40,330 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-27 04:50:40,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-27 04:50:40,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:50:40,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-27 04:50:40,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-08-27 04:50:40,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 504 [2023-08-27 04:50:40,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 50 transitions, 316 flow. Second operand has 24 states, 24 states have (on average 219.16666666666666) internal successors, (5260), 24 states have internal predecessors, (5260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:50:40,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:50:40,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 504 [2023-08-27 04:50:40,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:50:42,296 INFO L124 PetriNetUnfolderBase]: 436/771 cut-off events. [2023-08-27 04:50:42,296 INFO L125 PetriNetUnfolderBase]: For 1637/1637 co-relation queries the response was YES. [2023-08-27 04:50:42,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1884 conditions, 771 events. 436/771 cut-off events. For 1637/1637 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3024 event pairs, 340 based on Foata normal form. 24/518 useless extension candidates. Maximal degree in co-relation 1550. Up to 706 conditions per place. [2023-08-27 04:50:42,301 INFO L140 encePairwiseOnDemand]: 499/504 looper letters, 55 selfloop transitions, 26 changer transitions 0/81 dead transitions. [2023-08-27 04:50:42,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 81 transitions, 784 flow [2023-08-27 04:50:42,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-27 04:50:42,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-27 04:50:42,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 5334 transitions. [2023-08-27 04:50:42,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4409722222222222 [2023-08-27 04:50:42,315 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 5334 transitions. [2023-08-27 04:50:42,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 5334 transitions. [2023-08-27 04:50:42,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:50:42,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 5334 transitions. [2023-08-27 04:50:42,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 222.25) internal successors, (5334), 24 states have internal predecessors, (5334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:50:42,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 504.0) internal successors, (12600), 25 states have internal predecessors, (12600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:50:42,348 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 504.0) internal successors, (12600), 25 states have internal predecessors, (12600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:50:42,348 INFO L175 Difference]: Start difference. First operand has 70 places, 50 transitions, 316 flow. Second operand 24 states and 5334 transitions. [2023-08-27 04:50:42,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 81 transitions, 784 flow [2023-08-27 04:50:42,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 81 transitions, 716 flow, removed 19 selfloop flow, removed 4 redundant places. [2023-08-27 04:50:42,353 INFO L231 Difference]: Finished difference. Result has 102 places, 63 transitions, 529 flow [2023-08-27 04:50:42,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=529, PETRI_PLACES=102, PETRI_TRANSITIONS=63} [2023-08-27 04:50:42,354 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 62 predicate places. [2023-08-27 04:50:42,354 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 63 transitions, 529 flow [2023-08-27 04:50:42,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 219.16666666666666) internal successors, (5260), 24 states have internal predecessors, (5260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:50:42,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:50:42,356 INFO L208 CegarLoopForPetriNet]: trace histogram [23, 2, 1, 1, 1] [2023-08-27 04:50:42,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-27 04:50:42,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-08-27 04:50:42,568 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 04:50:42,568 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:50:42,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1431073881, now seen corresponding path program 3 times [2023-08-27 04:50:42,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:50:42,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470103780] [2023-08-27 04:50:42,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:50:42,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:50:42,794 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 04:50:42,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1673157165] [2023-08-27 04:50:42,795 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 04:50:42,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 04:50:42,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 04:50:42,797 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 04:50:42,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-27 04:50:43,734 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 04:50:43,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 04:50:43,739 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-27 04:50:43,744 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 04:50:43,791 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2023-08-27 04:50:43,791 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 04:50:48,242 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2023-08-27 04:50:48,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:50:48,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470103780] [2023-08-27 04:50:48,242 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 04:50:48,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673157165] [2023-08-27 04:50:48,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1673157165] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 04:50:48,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 04:50:48,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [2] total 5 [2023-08-27 04:50:48,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936741512] [2023-08-27 04:50:48,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:50:48,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 04:50:48,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:50:48,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 04:50:48,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-08-27 04:50:48,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 504 [2023-08-27 04:50:48,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 63 transitions, 529 flow. Second operand has 5 states, 5 states have (on average 216.4) internal successors, (1082), 5 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:50:48,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:50:48,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 504 [2023-08-27 04:50:48,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:50:50,370 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-08-27 04:50:50,560 INFO L124 PetriNetUnfolderBase]: 435/748 cut-off events. [2023-08-27 04:50:50,560 INFO L125 PetriNetUnfolderBase]: For 662/662 co-relation queries the response was YES. [2023-08-27 04:50:50,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1793 conditions, 748 events. 435/748 cut-off events. For 662/662 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2889 event pairs, 340 based on Foata normal form. 22/494 useless extension candidates. Maximal degree in co-relation 1574. Up to 698 conditions per place. [2023-08-27 04:50:50,566 INFO L140 encePairwiseOnDemand]: 498/504 looper letters, 53 selfloop transitions, 5 changer transitions 0/58 dead transitions. [2023-08-27 04:50:50,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 58 transitions, 549 flow [2023-08-27 04:50:50,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 04:50:50,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 04:50:50,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 896 transitions. [2023-08-27 04:50:50,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2023-08-27 04:50:50,569 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 896 transitions. [2023-08-27 04:50:50,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 896 transitions. [2023-08-27 04:50:50,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:50:50,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 896 transitions. [2023-08-27 04:50:50,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:50:50,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 504.0) internal successors, (2520), 5 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:50:50,574 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 504.0) internal successors, (2520), 5 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:50:50,574 INFO L175 Difference]: Start difference. First operand has 102 places, 63 transitions, 529 flow. Second operand 4 states and 896 transitions. [2023-08-27 04:50:50,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 58 transitions, 549 flow [2023-08-27 04:50:50,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 58 transitions, 399 flow, removed 53 selfloop flow, removed 17 redundant places. [2023-08-27 04:50:50,581 INFO L231 Difference]: Finished difference. Result has 86 places, 58 transitions, 293 flow [2023-08-27 04:50:50,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=293, PETRI_PLACES=86, PETRI_TRANSITIONS=58} [2023-08-27 04:50:50,582 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 46 predicate places. [2023-08-27 04:50:50,583 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 58 transitions, 293 flow [2023-08-27 04:50:50,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 216.4) internal successors, (1082), 5 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:50:50,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:50:50,583 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 04:50:50,592 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-27 04:50:50,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 04:50:50,792 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 04:50:50,792 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:50:50,792 INFO L85 PathProgramCache]: Analyzing trace with hash -512968736, now seen corresponding path program 1 times [2023-08-27 04:50:50,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:50:50,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377054602] [2023-08-27 04:50:50,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:50:50,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:50:51,072 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 04:50:51,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1765743266] [2023-08-27 04:50:51,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:50:51,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 04:50:51,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 04:50:51,076 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 04:50:51,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-27 04:50:52,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:50:52,715 INFO L262 TraceCheckSpWp]: Trace formula consists of 5288 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-27 04:50:52,722 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 04:50:52,995 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 1 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:50:52,996 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 04:50:53,442 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 1 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:50:53,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:50:53,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377054602] [2023-08-27 04:50:53,443 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 04:50:53,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765743266] [2023-08-27 04:50:53,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765743266] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 04:50:53,443 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-27 04:50:53,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 32 [2023-08-27 04:50:53,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978240470] [2023-08-27 04:50:53,443 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-27 04:50:53,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-27 04:50:53,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:50:53,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-27 04:50:53,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2023-08-27 04:50:53,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 504 [2023-08-27 04:50:53,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 58 transitions, 293 flow. Second operand has 32 states, 32 states have (on average 219.25) internal successors, (7016), 32 states have internal predecessors, (7016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:50:53,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:50:53,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 504 [2023-08-27 04:50:53,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:50:55,407 INFO L124 PetriNetUnfolderBase]: 435/764 cut-off events. [2023-08-27 04:50:55,407 INFO L125 PetriNetUnfolderBase]: For 5023/5023 co-relation queries the response was YES. [2023-08-27 04:50:55,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1721 conditions, 764 events. 435/764 cut-off events. For 5023/5023 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2889 event pairs, 340 based on Foata normal form. 16/504 useless extension candidates. Maximal degree in co-relation 1545. Up to 705 conditions per place. [2023-08-27 04:50:55,412 INFO L140 encePairwiseOnDemand]: 501/504 looper letters, 33 selfloop transitions, 33 changer transitions 0/66 dead transitions. [2023-08-27 04:50:55,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 66 transitions, 473 flow [2023-08-27 04:50:55,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-08-27 04:50:55,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-08-27 04:50:55,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 7047 transitions. [2023-08-27 04:50:55,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4369419642857143 [2023-08-27 04:50:55,427 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 7047 transitions. [2023-08-27 04:50:55,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 7047 transitions. [2023-08-27 04:50:55,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:50:55,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 7047 transitions. [2023-08-27 04:50:55,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 220.21875) internal successors, (7047), 32 states have internal predecessors, (7047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:50:55,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 504.0) internal successors, (16632), 33 states have internal predecessors, (16632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:50:55,464 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 504.0) internal successors, (16632), 33 states have internal predecessors, (16632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:50:55,464 INFO L175 Difference]: Start difference. First operand has 86 places, 58 transitions, 293 flow. Second operand 32 states and 7047 transitions. [2023-08-27 04:50:55,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 66 transitions, 473 flow [2023-08-27 04:50:55,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 66 transitions, 463 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 04:50:55,469 INFO L231 Difference]: Finished difference. Result has 122 places, 66 transitions, 447 flow [2023-08-27 04:50:55,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=447, PETRI_PLACES=122, PETRI_TRANSITIONS=66} [2023-08-27 04:50:55,470 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 82 predicate places. [2023-08-27 04:50:55,470 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 66 transitions, 447 flow [2023-08-27 04:50:55,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 219.25) internal successors, (7016), 32 states have internal predecessors, (7016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:50:55,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:50:55,472 INFO L208 CegarLoopForPetriNet]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 04:50:55,490 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-27 04:50:55,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-27 04:50:55,685 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 04:50:55,685 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:50:55,685 INFO L85 PathProgramCache]: Analyzing trace with hash 2064482016, now seen corresponding path program 2 times [2023-08-27 04:50:55,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:50:55,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612597969] [2023-08-27 04:50:55,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:50:55,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:50:55,981 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 04:50:55,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1744667491] [2023-08-27 04:50:55,982 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 04:50:55,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 04:50:55,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 04:50:55,985 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 04:50:55,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-27 04:50:58,117 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 04:50:58,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 04:50:58,156 INFO L262 TraceCheckSpWp]: Trace formula consists of 7160 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-27 04:50:58,163 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 04:50:58,218 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2023-08-27 04:50:58,219 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 04:50:58,350 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2023-08-27 04:50:58,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:50:58,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612597969] [2023-08-27 04:50:58,350 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 04:50:58,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744667491] [2023-08-27 04:50:58,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744667491] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 04:50:58,351 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-27 04:50:58,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-08-27 04:50:58,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865993743] [2023-08-27 04:50:58,351 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-27 04:50:58,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 04:50:58,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:50:58,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 04:50:58,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-27 04:50:58,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 504 [2023-08-27 04:50:58,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 66 transitions, 447 flow. Second operand has 6 states, 6 states have (on average 217.5) internal successors, (1305), 6 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:50:58,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:50:58,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 504 [2023-08-27 04:50:58,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:50:59,070 INFO L124 PetriNetUnfolderBase]: 437/831 cut-off events. [2023-08-27 04:50:59,071 INFO L125 PetriNetUnfolderBase]: For 1771/1771 co-relation queries the response was YES. [2023-08-27 04:50:59,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2190 conditions, 831 events. 437/831 cut-off events. For 1771/1771 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2754 event pairs, 340 based on Foata normal form. 3/558 useless extension candidates. Maximal degree in co-relation 1589. Up to 699 conditions per place. [2023-08-27 04:50:59,078 INFO L140 encePairwiseOnDemand]: 500/504 looper letters, 157 selfloop transitions, 6 changer transitions 0/163 dead transitions. [2023-08-27 04:50:59,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 163 transitions, 1593 flow [2023-08-27 04:50:59,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 04:50:59,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 04:50:59,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1336 transitions. [2023-08-27 04:50:59,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4417989417989418 [2023-08-27 04:50:59,081 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1336 transitions. [2023-08-27 04:50:59,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1336 transitions. [2023-08-27 04:50:59,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:50:59,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1336 transitions. [2023-08-27 04:50:59,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 222.66666666666666) internal successors, (1336), 6 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:50:59,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 504.0) internal successors, (3528), 7 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:50:59,089 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 504.0) internal successors, (3528), 7 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:50:59,089 INFO L175 Difference]: Start difference. First operand has 122 places, 66 transitions, 447 flow. Second operand 6 states and 1336 transitions. [2023-08-27 04:50:59,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 163 transitions, 1593 flow [2023-08-27 04:50:59,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 163 transitions, 1207 flow, removed 100 selfloop flow, removed 23 redundant places. [2023-08-27 04:50:59,099 INFO L231 Difference]: Finished difference. Result has 108 places, 69 transitions, 516 flow [2023-08-27 04:50:59,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=516, PETRI_PLACES=108, PETRI_TRANSITIONS=69} [2023-08-27 04:50:59,099 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 68 predicate places. [2023-08-27 04:50:59,099 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 69 transitions, 516 flow [2023-08-27 04:50:59,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 217.5) internal successors, (1305), 6 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:50:59,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:50:59,100 INFO L208 CegarLoopForPetriNet]: trace histogram [120, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 04:50:59,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-27 04:50:59,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-08-27 04:50:59,322 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 04:50:59,323 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:50:59,323 INFO L85 PathProgramCache]: Analyzing trace with hash 894894867, now seen corresponding path program 1 times [2023-08-27 04:50:59,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:50:59,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269809224] [2023-08-27 04:50:59,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:50:59,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:51:00,491 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 04:51:00,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2120876495] [2023-08-27 04:51:00,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:51:00,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 04:51:00,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 04:51:00,497 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 04:51:00,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-27 04:51:07,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:51:07,732 INFO L262 TraceCheckSpWp]: Trace formula consists of 28345 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 04:51:07,755 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 04:51:07,931 INFO L134 CoverageAnalysis]: Checked inductivity of 7636 backedges. 0 proven. 5776 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-08-27 04:51:07,931 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 04:51:08,201 INFO L134 CoverageAnalysis]: Checked inductivity of 7636 backedges. 0 proven. 5776 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-08-27 04:51:08,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:51:08,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269809224] [2023-08-27 04:51:08,202 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 04:51:08,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120876495] [2023-08-27 04:51:08,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120876495] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 04:51:08,202 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-27 04:51:08,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-08-27 04:51:08,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93473995] [2023-08-27 04:51:08,202 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-27 04:51:08,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-27 04:51:08,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:51:08,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-27 04:51:08,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-08-27 04:51:08,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 504 [2023-08-27 04:51:08,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 69 transitions, 516 flow. Second operand has 12 states, 12 states have (on average 217.75) internal successors, (2613), 12 states have internal predecessors, (2613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:08,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:51:08,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 504 [2023-08-27 04:51:08,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:51:09,447 INFO L124 PetriNetUnfolderBase]: 443/1029 cut-off events. [2023-08-27 04:51:09,448 INFO L125 PetriNetUnfolderBase]: For 5647/5647 co-relation queries the response was YES. [2023-08-27 04:51:09,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2845 conditions, 1029 events. 443/1029 cut-off events. For 5647/5647 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2759 event pairs, 340 based on Foata normal form. 6/759 useless extension candidates. Maximal degree in co-relation 1548. Up to 699 conditions per place. [2023-08-27 04:51:09,456 INFO L140 encePairwiseOnDemand]: 500/504 looper letters, 349 selfloop transitions, 12 changer transitions 0/361 dead transitions. [2023-08-27 04:51:09,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 361 transitions, 2897 flow [2023-08-27 04:51:09,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 04:51:09,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 04:51:09,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2647 transitions. [2023-08-27 04:51:09,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4376653439153439 [2023-08-27 04:51:09,459 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2647 transitions. [2023-08-27 04:51:09,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2647 transitions. [2023-08-27 04:51:09,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:51:09,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2647 transitions. [2023-08-27 04:51:09,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 220.58333333333334) internal successors, (2647), 12 states have internal predecessors, (2647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:09,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 504.0) internal successors, (6552), 13 states have internal predecessors, (6552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:09,471 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 504.0) internal successors, (6552), 13 states have internal predecessors, (6552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:09,472 INFO L175 Difference]: Start difference. First operand has 108 places, 69 transitions, 516 flow. Second operand 12 states and 2647 transitions. [2023-08-27 04:51:09,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 361 transitions, 2897 flow [2023-08-27 04:51:09,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 361 transitions, 2895 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 04:51:09,485 INFO L231 Difference]: Finished difference. Result has 125 places, 76 transitions, 995 flow [2023-08-27 04:51:09,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=995, PETRI_PLACES=125, PETRI_TRANSITIONS=76} [2023-08-27 04:51:09,486 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 85 predicate places. [2023-08-27 04:51:09,486 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 76 transitions, 995 flow [2023-08-27 04:51:09,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 217.75) internal successors, (2613), 12 states have internal predecessors, (2613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:09,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:51:09,487 INFO L208 CegarLoopForPetriNet]: trace histogram [300, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 04:51:09,562 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-27 04:51:09,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-27 04:51:09,701 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 04:51:09,701 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:51:09,701 INFO L85 PathProgramCache]: Analyzing trace with hash -222091435, now seen corresponding path program 2 times [2023-08-27 04:51:09,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:51:09,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018151037] [2023-08-27 04:51:09,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:51:09,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:51:12,468 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 04:51:12,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [991235486] [2023-08-27 04:51:12,469 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 04:51:12,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 04:51:12,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 04:51:12,471 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 04:51:12,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-27 04:51:21,015 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 04:51:21,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 04:51:21,056 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-27 04:51:21,074 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 04:51:21,100 INFO L134 CoverageAnalysis]: Checked inductivity of 47950 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47950 trivial. 0 not checked. [2023-08-27 04:51:21,100 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 04:51:21,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:51:21,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018151037] [2023-08-27 04:51:21,100 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 04:51:21,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991235486] [2023-08-27 04:51:21,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991235486] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:51:21,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 04:51:21,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 04:51:21,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534640449] [2023-08-27 04:51:21,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:51:21,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 04:51:21,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:51:21,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 04:51:21,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 04:51:21,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 504 [2023-08-27 04:51:21,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 76 transitions, 995 flow. Second operand has 3 states, 3 states have (on average 222.33333333333334) internal successors, (667), 3 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:21,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:51:21,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 504 [2023-08-27 04:51:21,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:51:21,764 INFO L124 PetriNetUnfolderBase]: 406/968 cut-off events. [2023-08-27 04:51:21,764 INFO L125 PetriNetUnfolderBase]: For 6224/6224 co-relation queries the response was YES. [2023-08-27 04:51:21,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2759 conditions, 968 events. 406/968 cut-off events. For 6224/6224 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2725 event pairs, 76 based on Foata normal form. 0/728 useless extension candidates. Maximal degree in co-relation 1432. Up to 518 conditions per place. [2023-08-27 04:51:21,772 INFO L140 encePairwiseOnDemand]: 501/504 looper letters, 88 selfloop transitions, 2 changer transitions 0/90 dead transitions. [2023-08-27 04:51:21,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 90 transitions, 1205 flow [2023-08-27 04:51:21,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 04:51:21,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 04:51:21,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 705 transitions. [2023-08-27 04:51:21,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4662698412698413 [2023-08-27 04:51:21,774 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 705 transitions. [2023-08-27 04:51:21,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 705 transitions. [2023-08-27 04:51:21,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:51:21,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 705 transitions. [2023-08-27 04:51:21,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:21,776 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 504.0) internal successors, (2016), 4 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:21,777 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 504.0) internal successors, (2016), 4 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:21,777 INFO L175 Difference]: Start difference. First operand has 125 places, 76 transitions, 995 flow. Second operand 3 states and 705 transitions. [2023-08-27 04:51:21,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 90 transitions, 1205 flow [2023-08-27 04:51:21,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 90 transitions, 1199 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 04:51:21,792 INFO L231 Difference]: Finished difference. Result has 123 places, 75 transitions, 991 flow [2023-08-27 04:51:21,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=987, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=991, PETRI_PLACES=123, PETRI_TRANSITIONS=75} [2023-08-27 04:51:21,793 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 83 predicate places. [2023-08-27 04:51:21,793 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 75 transitions, 991 flow [2023-08-27 04:51:21,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 222.33333333333334) internal successors, (667), 3 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:21,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:51:21,793 INFO L208 CegarLoopForPetriNet]: trace histogram [300, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 04:51:21,828 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-27 04:51:22,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-27 04:51:22,009 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 04:51:22,009 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:51:22,009 INFO L85 PathProgramCache]: Analyzing trace with hash -222091465, now seen corresponding path program 1 times [2023-08-27 04:51:22,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:51:22,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925841551] [2023-08-27 04:51:22,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:51:22,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:51:24,711 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 04:51:24,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2146647938] [2023-08-27 04:51:24,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:51:24,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 04:51:24,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 04:51:24,714 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 04:51:24,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-27 04:51:46,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:51:47,175 INFO L262 TraceCheckSpWp]: Trace formula consists of 70705 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-27 04:51:47,220 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 04:51:47,244 INFO L134 CoverageAnalysis]: Checked inductivity of 47950 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47950 trivial. 0 not checked. [2023-08-27 04:51:47,244 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 04:51:47,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:51:47,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925841551] [2023-08-27 04:51:47,245 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 04:51:47,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146647938] [2023-08-27 04:51:47,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146647938] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:51:47,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 04:51:47,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 04:51:47,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063638657] [2023-08-27 04:51:47,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:51:47,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 04:51:47,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:51:47,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 04:51:47,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 04:51:47,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 504 [2023-08-27 04:51:47,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 75 transitions, 991 flow. Second operand has 3 states, 3 states have (on average 222.33333333333334) internal successors, (667), 3 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:47,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:51:47,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 504 [2023-08-27 04:51:47,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:51:48,049 INFO L124 PetriNetUnfolderBase]: 369/907 cut-off events. [2023-08-27 04:51:48,049 INFO L125 PetriNetUnfolderBase]: For 6123/6123 co-relation queries the response was YES. [2023-08-27 04:51:48,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2681 conditions, 907 events. 369/907 cut-off events. For 6123/6123 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2447 event pairs, 10 based on Foata normal form. 0/751 useless extension candidates. Maximal degree in co-relation 1746. Up to 536 conditions per place. [2023-08-27 04:51:48,054 INFO L140 encePairwiseOnDemand]: 502/504 looper letters, 88 selfloop transitions, 1 changer transitions 0/89 dead transitions. [2023-08-27 04:51:48,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 89 transitions, 1199 flow [2023-08-27 04:51:48,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 04:51:48,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 04:51:48,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 704 transitions. [2023-08-27 04:51:48,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4656084656084656 [2023-08-27 04:51:48,056 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 704 transitions. [2023-08-27 04:51:48,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 704 transitions. [2023-08-27 04:51:48,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:51:48,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 704 transitions. [2023-08-27 04:51:48,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 234.66666666666666) internal successors, (704), 3 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:48,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 504.0) internal successors, (2016), 4 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:48,059 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 504.0) internal successors, (2016), 4 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:48,059 INFO L175 Difference]: Start difference. First operand has 123 places, 75 transitions, 991 flow. Second operand 3 states and 704 transitions. [2023-08-27 04:51:48,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 89 transitions, 1199 flow [2023-08-27 04:51:48,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 89 transitions, 1195 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 04:51:48,075 INFO L231 Difference]: Finished difference. Result has 122 places, 74 transitions, 987 flow [2023-08-27 04:51:48,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=985, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=987, PETRI_PLACES=122, PETRI_TRANSITIONS=74} [2023-08-27 04:51:48,076 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 82 predicate places. [2023-08-27 04:51:48,076 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 74 transitions, 987 flow [2023-08-27 04:51:48,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 222.33333333333334) internal successors, (667), 3 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:48,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:51:48,076 INFO L208 CegarLoopForPetriNet]: trace histogram [300, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 04:51:48,296 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forcibly destroying the process [2023-08-27 04:51:48,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-27 04:51:48,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 04:51:48,304 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 04:51:48,304 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:51:48,304 INFO L85 PathProgramCache]: Analyzing trace with hash -222091453, now seen corresponding path program 3 times [2023-08-27 04:51:48,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:51:48,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377300385] [2023-08-27 04:51:48,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:51:48,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:51:51,390 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-27 04:51:51,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1921252494] [2023-08-27 04:51:51,391 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 04:51:51,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 04:51:51,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 04:51:51,392 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 04:51:51,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process Received shutdown request... [2023-08-27 05:03:25,402 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-27 05:03:25,403 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-27 05:03:26,603 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2023-08-27 05:03:26,609 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forcibly destroying the process [2023-08-27 05:03:26,625 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 [2023-08-27 05:03:26,649 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 137 [2023-08-27 05:03:26,650 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-08-27 05:03:26,652 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 20 remaining) [2023-08-27 05:03:26,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-27 05:03:26,652 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 328 with TraceHistMax 300,while AutomatonFreeRefinementEngine was Timeout during CAMEL. [2023-08-27 05:03:26,653 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 20 remaining) [2023-08-27 05:03:26,653 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 20 remaining) [2023-08-27 05:03:26,653 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 20 remaining) [2023-08-27 05:03:26,653 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 20 remaining) [2023-08-27 05:03:26,653 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 20 remaining) [2023-08-27 05:03:26,654 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 20 remaining) [2023-08-27 05:03:26,654 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 20 remaining) [2023-08-27 05:03:26,654 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 20 remaining) [2023-08-27 05:03:26,654 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 20 remaining) [2023-08-27 05:03:26,654 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 20 remaining) [2023-08-27 05:03:26,654 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 20 remaining) [2023-08-27 05:03:26,654 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 20 remaining) [2023-08-27 05:03:26,654 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 20 remaining) [2023-08-27 05:03:26,654 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 20 remaining) [2023-08-27 05:03:26,654 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 20 remaining) [2023-08-27 05:03:26,655 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 20 remaining) [2023-08-27 05:03:26,655 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 20 remaining) [2023-08-27 05:03:26,655 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 20 remaining) [2023-08-27 05:03:26,655 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 20 remaining) [2023-08-27 05:03:26,655 INFO L445 BasicCegarLoop]: Path program histogram: [3, 3, 3, 2, 1, 1, 1, 1] [2023-08-27 05:03:26,658 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 05:03:26,658 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 05:03:26,660 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 05:03:26 BasicIcfg [2023-08-27 05:03:26,660 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 05:03:26,660 INFO L158 Benchmark]: Toolchain (without parser) took 853091.01ms. Allocated memory was 352.3MB in the beginning and 4.8GB in the end (delta: 4.5GB). Free memory was 326.3MB in the beginning and 3.7GB in the end (delta: -3.4GB). Peak memory consumption was 1.1GB. Max. memory is 16.0GB. [2023-08-27 05:03:26,661 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 352.3MB. Free memory was 329.2MB in the beginning and 329.1MB in the end (delta: 77.9kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 05:03:26,661 INFO L158 Benchmark]: CACSL2BoogieTranslator took 719.09ms. Allocated memory is still 352.3MB. Free memory was 326.3MB in the beginning and 296.1MB in the end (delta: 30.1MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. [2023-08-27 05:03:26,661 INFO L158 Benchmark]: Boogie Procedure Inliner took 83.71ms. Allocated memory is still 352.3MB. Free memory was 296.1MB in the beginning and 293.3MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-27 05:03:26,661 INFO L158 Benchmark]: Boogie Preprocessor took 55.29ms. Allocated memory is still 352.3MB. Free memory was 293.3MB in the beginning and 290.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 05:03:26,661 INFO L158 Benchmark]: RCFGBuilder took 645.79ms. Allocated memory is still 352.3MB. Free memory was 289.9MB in the beginning and 316.6MB in the end (delta: -26.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-27 05:03:26,662 INFO L158 Benchmark]: TraceAbstraction took 851577.80ms. Allocated memory was 352.3MB in the beginning and 4.8GB in the end (delta: 4.5GB). Free memory was 315.6MB in the beginning and 3.7GB in the end (delta: -3.4GB). Peak memory consumption was 1.1GB. Max. memory is 16.0GB. [2023-08-27 05:03:26,663 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 352.3MB. Free memory was 329.2MB in the beginning and 329.1MB in the end (delta: 77.9kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 719.09ms. Allocated memory is still 352.3MB. Free memory was 326.3MB in the beginning and 296.1MB in the end (delta: 30.1MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 83.71ms. Allocated memory is still 352.3MB. Free memory was 296.1MB in the beginning and 293.3MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 55.29ms. Allocated memory is still 352.3MB. Free memory was 293.3MB in the beginning and 290.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 645.79ms. Allocated memory is still 352.3MB. Free memory was 289.9MB in the beginning and 316.6MB in the end (delta: -26.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 851577.80ms. Allocated memory was 352.3MB in the beginning and 4.8GB in the end (delta: 4.5GB). Free memory was 315.6MB in the beginning and 3.7GB in the end (delta: -3.4GB). Peak memory consumption was 1.1GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 249]: Unsoundness Warning unspecified type, defaulting to int C: short [249] - GenericResultAtLocation [Line: 249]: Unsoundness Warning unspecified type, defaulting to int C: short [249] - GenericResultAtLocation [Line: 1071]: Unsoundness Warning unspecified type, defaulting to int C: long [1071] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 76.5s, 230 PlacesBefore, 40 PlacesAfterwards, 240 TransitionsBefore, 39 TransitionsAfterwards, 7154 CoEnabledTransitionPairs, 7 FixpointIterations, 127 TrivialSequentialCompositions, 94 ConcurrentSequentialCompositions, 15 TrivialYvCompositions, 15 ConcurrentYvCompositions, 11 ChoiceCompositions, 262 TotalNumberOfCompositions, 7085 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5935, independent: 5842, independent conditional: 0, independent unconditional: 5842, dependent: 93, dependent conditional: 0, dependent unconditional: 93, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3931, independent: 3902, independent conditional: 0, independent unconditional: 3902, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5935, independent: 1940, independent conditional: 0, independent unconditional: 1940, dependent: 64, dependent conditional: 0, dependent unconditional: 64, unknown: 3931, unknown conditional: 0, unknown unconditional: 3931] , Statistics on independence cache: Total cache size (in pairs): 85, Positive cache size: 74, Positive conditional cache size: 0, Positive unconditional cache size: 74, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 1047]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 328 with TraceHistMax 300,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 1047]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 328 with TraceHistMax 300,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 1052]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 328 with TraceHistMax 300,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 1052]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 328 with TraceHistMax 300,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 1063]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 328 with TraceHistMax 300,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 1063]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 328 with TraceHistMax 300,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 1060]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 328 with TraceHistMax 300,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 1060]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 328 with TraceHistMax 300,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 1063]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 328 with TraceHistMax 300,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 1063]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 328 with TraceHistMax 300,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 1069]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 328 with TraceHistMax 300,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 1070]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 328 with TraceHistMax 300,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 4 procedures, 273 locations, 20 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 851.4s, OverallIterations: 15, TraceHistogramMax: 300, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 13.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 76.6s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 128 SdHoareTripleChecker+Valid, 10.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 128 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 9.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 49 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1536 IncrementalHoareTripleChecker+Invalid, 1586 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 49 mSolverCounterUnsat, 0 mSDtfsCounter, 1536 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1193 GetRequests, 1082 SyntacticMatches, 16 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 5.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=995occurred in iteration=12, InterpolantAutomatonStates: 120, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 8.1s SsaConstructionTime, 16.0s SatisfiabilityAnalysisTime, 7.5s InterpolantComputationTime, 949 NumberOfCodeBlocks, 597 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 1193 ConstructedInterpolants, 27 QuantifiedInterpolants, 2496 SizeOfPredicates, 5 NumberOfNonLiveVariables, 117294 ConjunctsInSsa, 88 ConjunctsInUnsatCore, 21 InterpolantComputations, 8 PerfectInterpolantSequences, 101225/113464 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown