/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 PROGRAM_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/pthread-wmm/thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 10:20:29,541 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 10:20:29,591 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 10:20:29,600 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 10:20:29,601 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 10:20:29,631 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 10:20:29,632 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 10:20:29,632 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 10:20:29,633 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 10:20:29,635 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 10:20:29,635 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 10:20:29,636 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 10:20:29,636 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 10:20:29,636 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 10:20:29,636 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 10:20:29,636 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 10:20:29,637 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 10:20:29,637 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 10:20:29,637 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 10:20:29,637 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 10:20:29,637 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 10:20:29,637 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 10:20:29,638 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 10:20:29,638 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 10:20:29,638 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 10:20:29,638 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 10:20:29,638 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 10:20:29,638 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 10:20:29,638 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 10:20:29,639 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 10:20:29,639 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 10:20:29,639 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 10:20:29,639 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 10:20:29,639 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 10:20:29,639 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 10:20:29,639 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 10:20:29,857 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 10:20:29,876 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 10:20:29,878 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 10:20:29,879 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 10:20:29,879 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 10:20:29,880 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-27 10:20:30,856 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 10:20:31,020 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 10:20:31,021 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-27 10:20:31,042 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b75cef4fa/452886ff0065451a8879309ecc7df0cb/FLAGaa40a8c50 [2023-08-27 10:20:31,055 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b75cef4fa/452886ff0065451a8879309ecc7df0cb [2023-08-27 10:20:31,058 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 10:20:31,059 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 10:20:31,061 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 10:20:31,061 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 10:20:31,063 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 10:20:31,064 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 10:20:31" (1/1) ... [2023-08-27 10:20:31,065 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d3282cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:20:31, skipping insertion in model container [2023-08-27 10:20:31,065 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 10:20:31" (1/1) ... [2023-08-27 10:20:31,110 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 10:20:31,383 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 10:20:31,393 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 10:20:31,405 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-27 10:20:31,406 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-27 10:20:31,425 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 10:20:31,451 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 10:20:31,451 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 10:20:31,455 INFO L206 MainTranslator]: Completed translation [2023-08-27 10:20:31,456 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:20:31 WrapperNode [2023-08-27 10:20:31,456 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 10:20:31,457 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 10:20:31,457 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 10:20:31,457 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 10:20:31,461 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:20:31" (1/1) ... [2023-08-27 10:20:31,477 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:20:31" (1/1) ... [2023-08-27 10:20:31,490 INFO L138 Inliner]: procedures = 177, calls = 67, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 88 [2023-08-27 10:20:31,491 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 10:20:31,491 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 10:20:31,491 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 10:20:31,491 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 10:20:31,498 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:20:31" (1/1) ... [2023-08-27 10:20:31,499 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:20:31" (1/1) ... [2023-08-27 10:20:31,508 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:20:31" (1/1) ... [2023-08-27 10:20:31,508 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:20:31" (1/1) ... [2023-08-27 10:20:31,512 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:20:31" (1/1) ... [2023-08-27 10:20:31,513 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:20:31" (1/1) ... [2023-08-27 10:20:31,514 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:20:31" (1/1) ... [2023-08-27 10:20:31,515 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:20:31" (1/1) ... [2023-08-27 10:20:31,517 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 10:20:31,517 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 10:20:31,518 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 10:20:31,518 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 10:20:31,518 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:20:31" (1/1) ... [2023-08-27 10:20:31,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 10:20:31,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 10:20:31,555 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 10:20:31,562 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 10:20:31,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 10:20:31,581 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 10:20:31,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 10:20:31,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 10:20:31,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 10:20:31,582 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-27 10:20:31,582 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-27 10:20:31,582 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-27 10:20:31,582 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-27 10:20:31,582 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-27 10:20:31,583 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-27 10:20:31,583 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-27 10:20:31,583 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-27 10:20:31,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 10:20:31,583 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 10:20:31,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 10:20:31,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 10:20:31,586 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 10:20:31,673 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 10:20:31,674 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 10:20:31,863 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 10:20:31,893 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 10:20:31,893 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-27 10:20:31,895 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:20:31 BoogieIcfgContainer [2023-08-27 10:20:31,896 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 10:20:31,898 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 10:20:31,898 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 10:20:31,899 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 10:20:31,900 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 10:20:31" (1/3) ... [2023-08-27 10:20:31,900 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cf83444 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 10:20:31, skipping insertion in model container [2023-08-27 10:20:31,900 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:20:31" (2/3) ... [2023-08-27 10:20:31,901 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cf83444 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 10:20:31, skipping insertion in model container [2023-08-27 10:20:31,901 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:20:31" (3/3) ... [2023-08-27 10:20:31,902 INFO L112 eAbstractionObserver]: Analyzing ICFG thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-27 10:20:31,914 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 10:20:31,914 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2023-08-27 10:20:31,914 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 10:20:31,982 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 10:20:32,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 116 transitions, 252 flow [2023-08-27 10:20:32,067 INFO L124 PetriNetUnfolderBase]: 3/112 cut-off events. [2023-08-27 10:20:32,068 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 10:20:32,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 112 events. 3/112 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 97 event pairs, 0 based on Foata normal form. 0/100 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place. [2023-08-27 10:20:32,072 INFO L82 GeneralOperation]: Start removeDead. Operand has 126 places, 116 transitions, 252 flow [2023-08-27 10:20:32,075 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 122 places, 112 transitions, 236 flow [2023-08-27 10:20:32,078 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 10:20:32,085 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 122 places, 112 transitions, 236 flow [2023-08-27 10:20:32,087 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 122 places, 112 transitions, 236 flow [2023-08-27 10:20:32,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 112 transitions, 236 flow [2023-08-27 10:20:32,103 INFO L124 PetriNetUnfolderBase]: 3/112 cut-off events. [2023-08-27 10:20:32,103 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 10:20:32,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 112 events. 3/112 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 96 event pairs, 0 based on Foata normal form. 0/100 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place. [2023-08-27 10:20:32,105 INFO L119 LiptonReduction]: Number of co-enabled transitions 3616 [2023-08-27 10:20:34,185 INFO L134 LiptonReduction]: Checked pairs total: 11543 [2023-08-27 10:20:34,185 INFO L136 LiptonReduction]: Total number of compositions: 97 [2023-08-27 10:20:34,193 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 10:20:34,197 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;@62d2dd3a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 10:20:34,197 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-08-27 10:20:34,199 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 10:20:34,199 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-08-27 10:20:34,199 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 10:20:34,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:20:34,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 10:20:34,199 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-27 10:20:34,202 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:20:34,202 INFO L85 PathProgramCache]: Analyzing trace with hash 401559352, now seen corresponding path program 1 times [2023-08-27 10:20:34,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:20:34,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076641621] [2023-08-27 10:20:34,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:20:34,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:20:34,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:20:34,350 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 10:20:34,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:20:34,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076641621] [2023-08-27 10:20:34,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076641621] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:20:34,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:20:34,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 10:20:34,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060143814] [2023-08-27 10:20:34,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:20:34,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 10:20:34,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:20:34,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 10:20:34,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 10:20:34,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 213 [2023-08-27 10:20:34,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 33 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 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 10:20:34,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:20:34,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 213 [2023-08-27 10:20:34,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:20:34,782 INFO L124 PetriNetUnfolderBase]: 3927/5482 cut-off events. [2023-08-27 10:20:34,782 INFO L125 PetriNetUnfolderBase]: For 63/63 co-relation queries the response was YES. [2023-08-27 10:20:34,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11034 conditions, 5482 events. 3927/5482 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 29816 event pairs, 3927 based on Foata normal form. 0/3747 useless extension candidates. Maximal degree in co-relation 11022. Up to 5376 conditions per place. [2023-08-27 10:20:34,813 INFO L140 encePairwiseOnDemand]: 207/213 looper letters, 23 selfloop transitions, 1 changer transitions 0/28 dead transitions. [2023-08-27 10:20:34,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 28 transitions, 116 flow [2023-08-27 10:20:34,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 10:20:34,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 10:20:34,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 311 transitions. [2023-08-27 10:20:34,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.486697965571205 [2023-08-27 10:20:34,826 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 311 transitions. [2023-08-27 10:20:34,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 311 transitions. [2023-08-27 10:20:34,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:20:34,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 311 transitions. [2023-08-27 10:20:34,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 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 10:20:34,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 213.0) internal successors, (852), 4 states have internal predecessors, (852), 0 states have call successors, (0), 0 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 10:20:34,836 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 213.0) internal successors, (852), 4 states have internal predecessors, (852), 0 states have call successors, (0), 0 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 10:20:34,837 INFO L175 Difference]: Start difference. First operand has 45 places, 33 transitions, 78 flow. Second operand 3 states and 311 transitions. [2023-08-27 10:20:34,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 28 transitions, 116 flow [2023-08-27 10:20:34,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 28 transitions, 112 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 10:20:34,842 INFO L231 Difference]: Finished difference. Result has 39 places, 28 transitions, 66 flow [2023-08-27 10:20:34,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=39, PETRI_TRANSITIONS=28} [2023-08-27 10:20:34,846 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, -6 predicate places. [2023-08-27 10:20:34,846 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 28 transitions, 66 flow [2023-08-27 10:20:34,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 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 10:20:34,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:20:34,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 10:20:34,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 10:20:34,847 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-27 10:20:34,847 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:20:34,847 INFO L85 PathProgramCache]: Analyzing trace with hash 401559353, now seen corresponding path program 1 times [2023-08-27 10:20:34,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:20:34,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930318274] [2023-08-27 10:20:34,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:20:34,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:20:34,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:20:34,904 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 10:20:34,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:20:34,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930318274] [2023-08-27 10:20:34,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930318274] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:20:34,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:20:34,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 10:20:34,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112724961] [2023-08-27 10:20:34,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:20:34,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 10:20:34,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:20:34,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 10:20:34,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 10:20:34,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 213 [2023-08-27 10:20:34,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 28 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 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 10:20:34,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:20:34,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 213 [2023-08-27 10:20:34,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:20:35,138 INFO L124 PetriNetUnfolderBase]: 2300/3332 cut-off events. [2023-08-27 10:20:35,138 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 10:20:35,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6766 conditions, 3332 events. 2300/3332 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 17222 event pairs, 1067 based on Foata normal form. 16/2380 useless extension candidates. Maximal degree in co-relation 6760. Up to 3215 conditions per place. [2023-08-27 10:20:35,153 INFO L140 encePairwiseOnDemand]: 203/213 looper letters, 33 selfloop transitions, 5 changer transitions 0/42 dead transitions. [2023-08-27 10:20:35,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 42 transitions, 176 flow [2023-08-27 10:20:35,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 10:20:35,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 10:20:35,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 325 transitions. [2023-08-27 10:20:35,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5086071987480438 [2023-08-27 10:20:35,155 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 325 transitions. [2023-08-27 10:20:35,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 325 transitions. [2023-08-27 10:20:35,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:20:35,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 325 transitions. [2023-08-27 10:20:35,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 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 10:20:35,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 213.0) internal successors, (852), 4 states have internal predecessors, (852), 0 states have call successors, (0), 0 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 10:20:35,157 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 213.0) internal successors, (852), 4 states have internal predecessors, (852), 0 states have call successors, (0), 0 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 10:20:35,157 INFO L175 Difference]: Start difference. First operand has 39 places, 28 transitions, 66 flow. Second operand 3 states and 325 transitions. [2023-08-27 10:20:35,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 42 transitions, 176 flow [2023-08-27 10:20:35,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 42 transitions, 175 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 10:20:35,159 INFO L231 Difference]: Finished difference. Result has 41 places, 32 transitions, 106 flow [2023-08-27 10:20:35,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=41, PETRI_TRANSITIONS=32} [2023-08-27 10:20:35,159 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, -4 predicate places. [2023-08-27 10:20:35,159 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 32 transitions, 106 flow [2023-08-27 10:20:35,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 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 10:20:35,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:20:35,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:20:35,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 10:20:35,160 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-27 10:20:35,161 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:20:35,161 INFO L85 PathProgramCache]: Analyzing trace with hash 2124843185, now seen corresponding path program 1 times [2023-08-27 10:20:35,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:20:35,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351737571] [2023-08-27 10:20:35,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:20:35,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:20:35,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:20:35,240 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 10:20:35,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:20:35,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351737571] [2023-08-27 10:20:35,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351737571] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:20:35,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:20:35,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 10:20:35,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222858050] [2023-08-27 10:20:35,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:20:35,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 10:20:35,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:20:35,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 10:20:35,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 10:20:35,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 213 [2023-08-27 10:20:35,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 32 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 10:20:35,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:20:35,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 213 [2023-08-27 10:20:35,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:20:35,369 INFO L124 PetriNetUnfolderBase]: 788/1278 cut-off events. [2023-08-27 10:20:35,370 INFO L125 PetriNetUnfolderBase]: For 186/186 co-relation queries the response was YES. [2023-08-27 10:20:35,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3313 conditions, 1278 events. 788/1278 cut-off events. For 186/186 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 6252 event pairs, 278 based on Foata normal form. 32/1030 useless extension candidates. Maximal degree in co-relation 3305. Up to 985 conditions per place. [2023-08-27 10:20:35,375 INFO L140 encePairwiseOnDemand]: 203/213 looper letters, 41 selfloop transitions, 9 changer transitions 0/54 dead transitions. [2023-08-27 10:20:35,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 54 transitions, 268 flow [2023-08-27 10:20:35,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 10:20:35,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 10:20:35,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 431 transitions. [2023-08-27 10:20:35,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.505868544600939 [2023-08-27 10:20:35,376 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 431 transitions. [2023-08-27 10:20:35,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 431 transitions. [2023-08-27 10:20:35,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:20:35,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 431 transitions. [2023-08-27 10:20:35,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 107.75) internal successors, (431), 4 states have internal predecessors, (431), 0 states have call successors, (0), 0 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 10:20:35,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 213.0) internal successors, (1065), 5 states have internal predecessors, (1065), 0 states have call successors, (0), 0 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 10:20:35,379 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 213.0) internal successors, (1065), 5 states have internal predecessors, (1065), 0 states have call successors, (0), 0 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 10:20:35,379 INFO L175 Difference]: Start difference. First operand has 41 places, 32 transitions, 106 flow. Second operand 4 states and 431 transitions. [2023-08-27 10:20:35,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 54 transitions, 268 flow [2023-08-27 10:20:35,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 54 transitions, 263 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 10:20:35,380 INFO L231 Difference]: Finished difference. Result has 44 places, 36 transitions, 161 flow [2023-08-27 10:20:35,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=161, PETRI_PLACES=44, PETRI_TRANSITIONS=36} [2023-08-27 10:20:35,381 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, -1 predicate places. [2023-08-27 10:20:35,381 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 36 transitions, 161 flow [2023-08-27 10:20:35,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 10:20:35,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:20:35,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:20:35,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 10:20:35,382 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-27 10:20:35,382 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:20:35,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1411471523, now seen corresponding path program 1 times [2023-08-27 10:20:35,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:20:35,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536032706] [2023-08-27 10:20:35,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:20:35,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:20:35,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:20:35,431 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 10:20:35,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:20:35,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536032706] [2023-08-27 10:20:35,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536032706] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:20:35,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:20:35,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 10:20:35,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950851504] [2023-08-27 10:20:35,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:20:35,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 10:20:35,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:20:35,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 10:20:35,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-27 10:20:35,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 213 [2023-08-27 10:20:35,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 36 transitions, 161 flow. Second operand has 5 states, 5 states have (on average 96.4) internal successors, (482), 5 states have internal predecessors, (482), 0 states have call successors, (0), 0 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 10:20:35,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:20:35,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 213 [2023-08-27 10:20:35,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:20:35,526 INFO L124 PetriNetUnfolderBase]: 320/558 cut-off events. [2023-08-27 10:20:35,526 INFO L125 PetriNetUnfolderBase]: For 432/432 co-relation queries the response was YES. [2023-08-27 10:20:35,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1708 conditions, 558 events. 320/558 cut-off events. For 432/432 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2167 event pairs, 71 based on Foata normal form. 24/542 useless extension candidates. Maximal degree in co-relation 1698. Up to 226 conditions per place. [2023-08-27 10:20:35,529 INFO L140 encePairwiseOnDemand]: 203/213 looper letters, 47 selfloop transitions, 13 changer transitions 0/64 dead transitions. [2023-08-27 10:20:35,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 64 transitions, 365 flow [2023-08-27 10:20:35,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 10:20:35,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 10:20:35,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 535 transitions. [2023-08-27 10:20:35,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5023474178403756 [2023-08-27 10:20:35,530 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 535 transitions. [2023-08-27 10:20:35,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 535 transitions. [2023-08-27 10:20:35,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:20:35,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 535 transitions. [2023-08-27 10:20:35,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 107.0) internal successors, (535), 5 states have internal predecessors, (535), 0 states have call successors, (0), 0 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 10:20:35,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 213.0) internal successors, (1278), 6 states have internal predecessors, (1278), 0 states have call successors, (0), 0 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 10:20:35,533 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 213.0) internal successors, (1278), 6 states have internal predecessors, (1278), 0 states have call successors, (0), 0 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 10:20:35,533 INFO L175 Difference]: Start difference. First operand has 44 places, 36 transitions, 161 flow. Second operand 5 states and 535 transitions. [2023-08-27 10:20:35,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 64 transitions, 365 flow [2023-08-27 10:20:35,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 64 transitions, 347 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-27 10:20:35,536 INFO L231 Difference]: Finished difference. Result has 47 places, 40 transitions, 219 flow [2023-08-27 10:20:35,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=219, PETRI_PLACES=47, PETRI_TRANSITIONS=40} [2023-08-27 10:20:35,536 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 2 predicate places. [2023-08-27 10:20:35,537 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 40 transitions, 219 flow [2023-08-27 10:20:35,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 96.4) internal successors, (482), 5 states have internal predecessors, (482), 0 states have call successors, (0), 0 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 10:20:35,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:20:35,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:20:35,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 10:20:35,537 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-27 10:20:35,537 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:20:35,538 INFO L85 PathProgramCache]: Analyzing trace with hash -632568015, now seen corresponding path program 1 times [2023-08-27 10:20:35,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:20:35,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693418717] [2023-08-27 10:20:35,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:20:35,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:20:35,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:20:35,596 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 10:20:35,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:20:35,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693418717] [2023-08-27 10:20:35,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693418717] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:20:35,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:20:35,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 10:20:35,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042218469] [2023-08-27 10:20:35,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:20:35,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 10:20:35,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:20:35,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 10:20:35,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-27 10:20:35,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 213 [2023-08-27 10:20:35,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 40 transitions, 219 flow. Second operand has 6 states, 6 states have (on average 96.66666666666667) internal successors, (580), 6 states have internal predecessors, (580), 0 states have call successors, (0), 0 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 10:20:35,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:20:35,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 213 [2023-08-27 10:20:35,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:20:35,675 INFO L124 PetriNetUnfolderBase]: 272/458 cut-off events. [2023-08-27 10:20:35,675 INFO L125 PetriNetUnfolderBase]: For 502/502 co-relation queries the response was YES. [2023-08-27 10:20:35,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1468 conditions, 458 events. 272/458 cut-off events. For 502/502 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1678 event pairs, 51 based on Foata normal form. 8/458 useless extension candidates. Maximal degree in co-relation 1457. Up to 176 conditions per place. [2023-08-27 10:20:35,678 INFO L140 encePairwiseOnDemand]: 203/213 looper letters, 38 selfloop transitions, 17 changer transitions 1/60 dead transitions. [2023-08-27 10:20:35,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 60 transitions, 359 flow [2023-08-27 10:20:35,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 10:20:35,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 10:20:35,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 625 transitions. [2023-08-27 10:20:35,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4890453834115806 [2023-08-27 10:20:35,679 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 625 transitions. [2023-08-27 10:20:35,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 625 transitions. [2023-08-27 10:20:35,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:20:35,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 625 transitions. [2023-08-27 10:20:35,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 104.16666666666667) internal successors, (625), 6 states have internal predecessors, (625), 0 states have call successors, (0), 0 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 10:20:35,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 213.0) internal successors, (1491), 7 states have internal predecessors, (1491), 0 states have call successors, (0), 0 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 10:20:35,690 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 213.0) internal successors, (1491), 7 states have internal predecessors, (1491), 0 states have call successors, (0), 0 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 10:20:35,690 INFO L175 Difference]: Start difference. First operand has 47 places, 40 transitions, 219 flow. Second operand 6 states and 625 transitions. [2023-08-27 10:20:35,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 60 transitions, 359 flow [2023-08-27 10:20:35,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 60 transitions, 325 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-08-27 10:20:35,696 INFO L231 Difference]: Finished difference. Result has 46 places, 35 transitions, 195 flow [2023-08-27 10:20:35,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=195, PETRI_PLACES=46, PETRI_TRANSITIONS=35} [2023-08-27 10:20:35,698 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 1 predicate places. [2023-08-27 10:20:35,698 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 35 transitions, 195 flow [2023-08-27 10:20:35,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 96.66666666666667) internal successors, (580), 6 states have internal predecessors, (580), 0 states have call successors, (0), 0 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 10:20:35,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:20:35,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:20:35,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 10:20:35,698 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-27 10:20:35,699 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:20:35,699 INFO L85 PathProgramCache]: Analyzing trace with hash -315573940, now seen corresponding path program 1 times [2023-08-27 10:20:35,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:20:35,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107733516] [2023-08-27 10:20:35,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:20:35,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:20:35,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:20:35,870 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 10:20:35,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:20:35,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107733516] [2023-08-27 10:20:35,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107733516] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:20:35,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:20:35,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 10:20:35,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274910931] [2023-08-27 10:20:35,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:20:35,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 10:20:35,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:20:35,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 10:20:35,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-27 10:20:35,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 213 [2023-08-27 10:20:35,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 35 transitions, 195 flow. Second operand has 6 states, 6 states have (on average 88.33333333333333) internal successors, (530), 6 states have internal predecessors, (530), 0 states have call successors, (0), 0 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 10:20:35,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:20:35,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 213 [2023-08-27 10:20:35,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:20:35,955 INFO L124 PetriNetUnfolderBase]: 374/646 cut-off events. [2023-08-27 10:20:35,955 INFO L125 PetriNetUnfolderBase]: For 1206/1206 co-relation queries the response was YES. [2023-08-27 10:20:35,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2100 conditions, 646 events. 374/646 cut-off events. For 1206/1206 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3035 event pairs, 184 based on Foata normal form. 1/634 useless extension candidates. Maximal degree in co-relation 2088. Up to 351 conditions per place. [2023-08-27 10:20:35,957 INFO L140 encePairwiseOnDemand]: 208/213 looper letters, 46 selfloop transitions, 3 changer transitions 15/67 dead transitions. [2023-08-27 10:20:35,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 67 transitions, 550 flow [2023-08-27 10:20:35,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 10:20:35,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 10:20:35,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 460 transitions. [2023-08-27 10:20:35,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.431924882629108 [2023-08-27 10:20:35,959 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 460 transitions. [2023-08-27 10:20:35,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 460 transitions. [2023-08-27 10:20:35,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:20:35,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 460 transitions. [2023-08-27 10:20:35,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 92.0) internal successors, (460), 5 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:35,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 213.0) internal successors, (1278), 6 states have internal predecessors, (1278), 0 states have call successors, (0), 0 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 10:20:35,961 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 213.0) internal successors, (1278), 6 states have internal predecessors, (1278), 0 states have call successors, (0), 0 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 10:20:35,961 INFO L175 Difference]: Start difference. First operand has 46 places, 35 transitions, 195 flow. Second operand 5 states and 460 transitions. [2023-08-27 10:20:35,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 67 transitions, 550 flow [2023-08-27 10:20:35,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 67 transitions, 437 flow, removed 24 selfloop flow, removed 4 redundant places. [2023-08-27 10:20:35,964 INFO L231 Difference]: Finished difference. Result has 47 places, 35 transitions, 157 flow [2023-08-27 10:20:35,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=157, PETRI_PLACES=47, PETRI_TRANSITIONS=35} [2023-08-27 10:20:35,965 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 2 predicate places. [2023-08-27 10:20:35,965 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 35 transitions, 157 flow [2023-08-27 10:20:35,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 88.33333333333333) internal successors, (530), 6 states have internal predecessors, (530), 0 states have call successors, (0), 0 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 10:20:35,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:20:35,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:20:35,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 10:20:35,965 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-27 10:20:35,966 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:20:35,966 INFO L85 PathProgramCache]: Analyzing trace with hash -557753988, now seen corresponding path program 2 times [2023-08-27 10:20:35,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:20:35,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310806715] [2023-08-27 10:20:35,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:20:35,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:20:35,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:20:36,101 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 10:20:36,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:20:36,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310806715] [2023-08-27 10:20:36,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310806715] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:20:36,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:20:36,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 10:20:36,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103132263] [2023-08-27 10:20:36,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:20:36,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 10:20:36,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:20:36,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 10:20:36,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 10:20:36,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 213 [2023-08-27 10:20:36,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 35 transitions, 157 flow. Second operand has 5 states, 5 states have (on average 95.0) internal successors, (475), 5 states have internal predecessors, (475), 0 states have call successors, (0), 0 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 10:20:36,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:20:36,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 213 [2023-08-27 10:20:36,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:20:36,160 INFO L124 PetriNetUnfolderBase]: 183/349 cut-off events. [2023-08-27 10:20:36,160 INFO L125 PetriNetUnfolderBase]: For 390/390 co-relation queries the response was YES. [2023-08-27 10:20:36,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1089 conditions, 349 events. 183/349 cut-off events. For 390/390 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1440 event pairs, 72 based on Foata normal form. 1/346 useless extension candidates. Maximal degree in co-relation 1077. Up to 161 conditions per place. [2023-08-27 10:20:36,162 INFO L140 encePairwiseOnDemand]: 208/213 looper letters, 44 selfloop transitions, 3 changer transitions 15/65 dead transitions. [2023-08-27 10:20:36,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 65 transitions, 443 flow [2023-08-27 10:20:36,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 10:20:36,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 10:20:36,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 488 transitions. [2023-08-27 10:20:36,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4582159624413146 [2023-08-27 10:20:36,163 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 488 transitions. [2023-08-27 10:20:36,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 488 transitions. [2023-08-27 10:20:36,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:20:36,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 488 transitions. [2023-08-27 10:20:36,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 97.6) internal successors, (488), 5 states have internal predecessors, (488), 0 states have call successors, (0), 0 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 10:20:36,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 213.0) internal successors, (1278), 6 states have internal predecessors, (1278), 0 states have call successors, (0), 0 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 10:20:36,165 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 213.0) internal successors, (1278), 6 states have internal predecessors, (1278), 0 states have call successors, (0), 0 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 10:20:36,165 INFO L175 Difference]: Start difference. First operand has 47 places, 35 transitions, 157 flow. Second operand 5 states and 488 transitions. [2023-08-27 10:20:36,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 65 transitions, 443 flow [2023-08-27 10:20:36,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 65 transitions, 429 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-08-27 10:20:36,170 INFO L231 Difference]: Finished difference. Result has 47 places, 35 transitions, 157 flow [2023-08-27 10:20:36,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=157, PETRI_PLACES=47, PETRI_TRANSITIONS=35} [2023-08-27 10:20:36,173 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 2 predicate places. [2023-08-27 10:20:36,173 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 35 transitions, 157 flow [2023-08-27 10:20:36,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 95.0) internal successors, (475), 5 states have internal predecessors, (475), 0 states have call successors, (0), 0 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 10:20:36,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:20:36,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:20:36,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 10:20:36,175 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-27 10:20:36,175 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:20:36,175 INFO L85 PathProgramCache]: Analyzing trace with hash 237695446, now seen corresponding path program 3 times [2023-08-27 10:20:36,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:20:36,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928088220] [2023-08-27 10:20:36,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:20:36,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:20:36,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:20:36,278 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 10:20:36,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:20:36,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928088220] [2023-08-27 10:20:36,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928088220] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:20:36,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:20:36,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 10:20:36,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359593302] [2023-08-27 10:20:36,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:20:36,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 10:20:36,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:20:36,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 10:20:36,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-27 10:20:36,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 213 [2023-08-27 10:20:36,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 35 transitions, 157 flow. Second operand has 6 states, 6 states have (on average 88.33333333333333) internal successors, (530), 6 states have internal predecessors, (530), 0 states have call successors, (0), 0 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 10:20:36,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:20:36,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 213 [2023-08-27 10:20:36,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:20:36,327 INFO L124 PetriNetUnfolderBase]: 98/203 cut-off events. [2023-08-27 10:20:36,327 INFO L125 PetriNetUnfolderBase]: For 262/266 co-relation queries the response was YES. [2023-08-27 10:20:36,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 678 conditions, 203 events. 98/203 cut-off events. For 262/266 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 693 event pairs, 29 based on Foata normal form. 1/201 useless extension candidates. Maximal degree in co-relation 666. Up to 86 conditions per place. [2023-08-27 10:20:36,328 INFO L140 encePairwiseOnDemand]: 208/213 looper letters, 42 selfloop transitions, 3 changer transitions 15/63 dead transitions. [2023-08-27 10:20:36,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 63 transitions, 435 flow [2023-08-27 10:20:36,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 10:20:36,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 10:20:36,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 456 transitions. [2023-08-27 10:20:36,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.428169014084507 [2023-08-27 10:20:36,329 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 456 transitions. [2023-08-27 10:20:36,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 456 transitions. [2023-08-27 10:20:36,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:20:36,330 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 456 transitions. [2023-08-27 10:20:36,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 91.2) internal successors, (456), 5 states have internal predecessors, (456), 0 states have call successors, (0), 0 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 10:20:36,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 213.0) internal successors, (1278), 6 states have internal predecessors, (1278), 0 states have call successors, (0), 0 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 10:20:36,332 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 213.0) internal successors, (1278), 6 states have internal predecessors, (1278), 0 states have call successors, (0), 0 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 10:20:36,332 INFO L175 Difference]: Start difference. First operand has 47 places, 35 transitions, 157 flow. Second operand 5 states and 456 transitions. [2023-08-27 10:20:36,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 63 transitions, 435 flow [2023-08-27 10:20:36,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 63 transitions, 421 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-08-27 10:20:36,334 INFO L231 Difference]: Finished difference. Result has 47 places, 35 transitions, 157 flow [2023-08-27 10:20:36,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=157, PETRI_PLACES=47, PETRI_TRANSITIONS=35} [2023-08-27 10:20:36,334 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 2 predicate places. [2023-08-27 10:20:36,334 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 35 transitions, 157 flow [2023-08-27 10:20:36,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 88.33333333333333) internal successors, (530), 6 states have internal predecessors, (530), 0 states have call successors, (0), 0 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 10:20:36,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:20:36,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:20:36,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 10:20:36,335 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-27 10:20:36,335 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:20:36,335 INFO L85 PathProgramCache]: Analyzing trace with hash -753105886, now seen corresponding path program 4 times [2023-08-27 10:20:36,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:20:36,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891629546] [2023-08-27 10:20:36,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:20:36,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:20:36,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:20:36,413 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 10:20:36,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:20:36,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891629546] [2023-08-27 10:20:36,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891629546] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:20:36,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:20:36,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 10:20:36,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788466721] [2023-08-27 10:20:36,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:20:36,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 10:20:36,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:20:36,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 10:20:36,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 10:20:36,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 213 [2023-08-27 10:20:36,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 35 transitions, 157 flow. Second operand has 5 states, 5 states have (on average 95.0) internal successors, (475), 5 states have internal predecessors, (475), 0 states have call successors, (0), 0 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 10:20:36,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:20:36,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 213 [2023-08-27 10:20:36,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:20:36,450 INFO L124 PetriNetUnfolderBase]: 46/98 cut-off events. [2023-08-27 10:20:36,450 INFO L125 PetriNetUnfolderBase]: For 129/133 co-relation queries the response was YES. [2023-08-27 10:20:36,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 353 conditions, 98 events. 46/98 cut-off events. For 129/133 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 208 event pairs, 11 based on Foata normal form. 1/97 useless extension candidates. Maximal degree in co-relation 344. Up to 52 conditions per place. [2023-08-27 10:20:36,450 INFO L140 encePairwiseOnDemand]: 209/213 looper letters, 0 selfloop transitions, 0 changer transitions 43/43 dead transitions. [2023-08-27 10:20:36,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 43 transitions, 287 flow [2023-08-27 10:20:36,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 10:20:36,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 10:20:36,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 478 transitions. [2023-08-27 10:20:36,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4488262910798122 [2023-08-27 10:20:36,452 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 478 transitions. [2023-08-27 10:20:36,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 478 transitions. [2023-08-27 10:20:36,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:20:36,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 478 transitions. [2023-08-27 10:20:36,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 95.6) internal successors, (478), 5 states have internal predecessors, (478), 0 states have call successors, (0), 0 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 10:20:36,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 213.0) internal successors, (1278), 6 states have internal predecessors, (1278), 0 states have call successors, (0), 0 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 10:20:36,454 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 213.0) internal successors, (1278), 6 states have internal predecessors, (1278), 0 states have call successors, (0), 0 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 10:20:36,454 INFO L175 Difference]: Start difference. First operand has 47 places, 35 transitions, 157 flow. Second operand 5 states and 478 transitions. [2023-08-27 10:20:36,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 43 transitions, 287 flow [2023-08-27 10:20:36,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 43 transitions, 277 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-08-27 10:20:36,455 INFO L231 Difference]: Finished difference. Result has 45 places, 0 transitions, 0 flow [2023-08-27 10:20:36,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=213, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=45, PETRI_TRANSITIONS=0} [2023-08-27 10:20:36,456 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 0 predicate places. [2023-08-27 10:20:36,456 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 0 transitions, 0 flow [2023-08-27 10:20:36,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 95.0) internal successors, (475), 5 states have internal predecessors, (475), 0 states have call successors, (0), 0 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 10:20:36,458 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 21 remaining) [2023-08-27 10:20:36,458 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2023-08-27 10:20:36,458 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2023-08-27 10:20:36,458 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2023-08-27 10:20:36,458 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2023-08-27 10:20:36,458 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2023-08-27 10:20:36,458 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2023-08-27 10:20:36,459 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2023-08-27 10:20:36,459 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (12 of 21 remaining) [2023-08-27 10:20:36,459 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 21 remaining) [2023-08-27 10:20:36,459 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 21 remaining) [2023-08-27 10:20:36,459 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 21 remaining) [2023-08-27 10:20:36,459 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 21 remaining) [2023-08-27 10:20:36,459 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2023-08-27 10:20:36,459 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2023-08-27 10:20:36,459 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2023-08-27 10:20:36,459 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2023-08-27 10:20:36,459 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2023-08-27 10:20:36,460 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2023-08-27 10:20:36,460 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2023-08-27 10:20:36,460 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2023-08-27 10:20:36,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 10:20:36,460 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1, 1, 1] [2023-08-27 10:20:36,463 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 10:20:36,463 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 10:20:36,466 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 10:20:36 BasicIcfg [2023-08-27 10:20:36,466 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 10:20:36,466 INFO L158 Benchmark]: Toolchain (without parser) took 5406.93ms. Allocated memory was 415.2MB in the beginning and 557.8MB in the end (delta: 142.6MB). Free memory was 369.3MB in the beginning and 256.2MB in the end (delta: 113.0MB). Peak memory consumption was 256.7MB. Max. memory is 16.0GB. [2023-08-27 10:20:36,466 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 415.2MB. Free memory is still 393.1MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 10:20:36,467 INFO L158 Benchmark]: CACSL2BoogieTranslator took 394.81ms. Allocated memory is still 415.2MB. Free memory was 369.3MB in the beginning and 348.3MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-27 10:20:36,467 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.10ms. Allocated memory is still 415.2MB. Free memory was 348.3MB in the beginning and 346.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 10:20:36,467 INFO L158 Benchmark]: Boogie Preprocessor took 25.83ms. Allocated memory is still 415.2MB. Free memory was 346.2MB in the beginning and 345.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 10:20:36,467 INFO L158 Benchmark]: RCFGBuilder took 378.25ms. Allocated memory is still 415.2MB. Free memory was 345.1MB in the beginning and 327.3MB in the end (delta: 17.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-27 10:20:36,468 INFO L158 Benchmark]: TraceAbstraction took 4568.31ms. Allocated memory was 415.2MB in the beginning and 557.8MB in the end (delta: 142.6MB). Free memory was 326.3MB in the beginning and 256.2MB in the end (delta: 70.0MB). Peak memory consumption was 214.8MB. Max. memory is 16.0GB. [2023-08-27 10:20:36,469 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 415.2MB. Free memory is still 393.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 394.81ms. Allocated memory is still 415.2MB. Free memory was 369.3MB in the beginning and 348.3MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 34.10ms. Allocated memory is still 415.2MB. Free memory was 348.3MB in the beginning and 346.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 25.83ms. Allocated memory is still 415.2MB. Free memory was 346.2MB in the beginning and 345.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 378.25ms. Allocated memory is still 415.2MB. Free memory was 345.1MB in the beginning and 327.3MB in the end (delta: 17.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 4568.31ms. Allocated memory was 415.2MB in the beginning and 557.8MB in the end (delta: 142.6MB). Free memory was 326.3MB in the beginning and 256.2MB in the end (delta: 70.0MB). Peak memory consumption was 214.8MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.1s, 122 PlacesBefore, 45 PlacesAfterwards, 112 TransitionsBefore, 33 TransitionsAfterwards, 3616 CoEnabledTransitionPairs, 7 FixpointIterations, 23 TrivialSequentialCompositions, 55 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 17 ConcurrentYvCompositions, 2 ChoiceCompositions, 97 TotalNumberOfCompositions, 11543 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5547, independent: 5280, independent conditional: 0, independent unconditional: 5280, dependent: 267, dependent conditional: 0, dependent unconditional: 267, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2006, independent: 1967, independent conditional: 0, independent unconditional: 1967, dependent: 39, dependent conditional: 0, dependent unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5547, independent: 3313, independent conditional: 0, independent unconditional: 3313, dependent: 228, dependent conditional: 0, dependent unconditional: 228, unknown: 2006, unknown conditional: 0, unknown unconditional: 2006] , Statistics on independence cache: Total cache size (in pairs): 210, Positive cache size: 191, Positive conditional cache size: 0, Positive unconditional cache size: 191, Negative cache size: 19, Negative conditional cache size: 0, Negative unconditional cache size: 19, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 740]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 740]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 755]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 755]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 770]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 770]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 785]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 785]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 154 locations, 21 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: 4.5s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 169 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 169 mSDsluCounter, 8 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 47 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 519 IncrementalHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 47 mSolverCounterUnsat, 4 mSDtfsCounter, 519 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=219occurred in iteration=4, InterpolantAutomatonStates: 41, 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 147 NumberOfCodeBlocks, 147 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 138 ConstructedInterpolants, 0 QuantifiedInterpolants, 610 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 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 - AllSpecificationsHoldResult: All specifications hold 9 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-27 10:20:36,485 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 0 Received shutdown request...