/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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_93-evilcollapse_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 22:57:11,972 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 22:57:12,056 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 [2023-08-26 22:57:12,061 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 22:57:12,062 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 22:57:12,093 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 22:57:12,094 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 22:57:12,094 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 22:57:12,095 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 22:57:12,098 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 22:57:12,098 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 22:57:12,099 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 22:57:12,099 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 22:57:12,100 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 22:57:12,100 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 22:57:12,100 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 22:57:12,101 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 22:57:12,101 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 22:57:12,101 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 22:57:12,101 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 22:57:12,101 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 22:57:12,102 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 22:57:12,102 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 22:57:12,103 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 22:57:12,103 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 22:57:12,103 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 22:57:12,103 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 22:57:12,103 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 22:57:12,104 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 22:57:12,104 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 22:57:12,105 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 22:57:12,105 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 22:57:12,105 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 22:57:12,105 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 22:57:12,105 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 22:57:12,106 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-26 22:57:12,447 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 22:57:12,464 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 22:57:12,467 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 22:57:12,468 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 22:57:12,468 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 22:57:12,469 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_93-evilcollapse_racefree.i [2023-08-26 22:57:13,695 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 22:57:14,040 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 22:57:14,041 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_93-evilcollapse_racefree.i [2023-08-26 22:57:14,060 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc228b140/6ba2415b75344f78a02d6ee4d511e9eb/FLAG4fd12e7b6 [2023-08-26 22:57:14,075 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc228b140/6ba2415b75344f78a02d6ee4d511e9eb [2023-08-26 22:57:14,079 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 22:57:14,080 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 22:57:14,083 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 22:57:14,083 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 22:57:14,085 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 22:57:14,086 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 10:57:14" (1/1) ... [2023-08-26 22:57:14,087 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4635db4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:57:14, skipping insertion in model container [2023-08-26 22:57:14,087 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 10:57:14" (1/1) ... [2023-08-26 22:57:14,148 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 22:57:14,621 WARN L1561 CHandler]: Possible shadowing of function new [2023-08-26 22:57:14,622 WARN L1561 CHandler]: Possible shadowing of function new [2023-08-26 22:57:14,622 WARN L1561 CHandler]: Possible shadowing of function new [2023-08-26 22:57:14,623 WARN L1561 CHandler]: Possible shadowing of function new [2023-08-26 22:57:14,663 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 22:57:14,688 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 22:57:14,714 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 22:57:14,715 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 22:57:14,739 WARN L1561 CHandler]: Possible shadowing of function new [2023-08-26 22:57:14,739 WARN L1561 CHandler]: Possible shadowing of function new [2023-08-26 22:57:14,740 WARN L1561 CHandler]: Possible shadowing of function new [2023-08-26 22:57:14,740 WARN L1561 CHandler]: Possible shadowing of function new [2023-08-26 22:57:14,759 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: long [1084] [2023-08-26 22:57:14,760 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 22:57:14,831 INFO L206 MainTranslator]: Completed translation [2023-08-26 22:57:14,831 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:57:14 WrapperNode [2023-08-26 22:57:14,831 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 22:57:14,833 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 22:57:14,833 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 22:57:14,833 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 22:57:14,839 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:57:14" (1/1) ... [2023-08-26 22:57:14,870 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:57:14" (1/1) ... [2023-08-26 22:57:14,916 INFO L138 Inliner]: procedures = 279, calls = 52, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 251 [2023-08-26 22:57:14,917 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 22:57:14,917 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 22:57:14,917 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 22:57:14,918 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 22:57:14,925 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:57:14" (1/1) ... [2023-08-26 22:57:14,926 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:57:14" (1/1) ... [2023-08-26 22:57:14,933 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:57:14" (1/1) ... [2023-08-26 22:57:14,933 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:57:14" (1/1) ... [2023-08-26 22:57:14,943 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:57:14" (1/1) ... [2023-08-26 22:57:14,948 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:57:14" (1/1) ... [2023-08-26 22:57:14,950 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:57:14" (1/1) ... [2023-08-26 22:57:14,952 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:57:14" (1/1) ... [2023-08-26 22:57:14,955 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 22:57:14,964 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 22:57:14,964 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 22:57:14,964 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 22:57:14,969 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:57:14" (1/1) ... [2023-08-26 22:57:14,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 22:57:14,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:57:14,993 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) [2023-08-26 22:57:14,994 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 [2023-08-26 22:57:15,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 22:57:15,017 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-26 22:57:15,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 22:57:15,017 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 22:57:15,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 22:57:15,017 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 22:57:15,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-26 22:57:15,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 22:57:15,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-26 22:57:15,017 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-26 22:57:15,018 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-26 22:57:15,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 22:57:15,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 22:57:15,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 22:57:15,019 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 22:57:15,150 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 22:57:15,152 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 22:57:15,557 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 22:57:15,571 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 22:57:15,571 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-08-26 22:57:15,573 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 10:57:15 BoogieIcfgContainer [2023-08-26 22:57:15,573 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 22:57:15,575 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 22:57:15,575 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 22:57:15,578 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 22:57:15,578 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 10:57:14" (1/3) ... [2023-08-26 22:57:15,579 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d150921 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 10:57:15, skipping insertion in model container [2023-08-26 22:57:15,579 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:57:14" (2/3) ... [2023-08-26 22:57:15,579 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d150921 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 10:57:15, skipping insertion in model container [2023-08-26 22:57:15,579 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 10:57:15" (3/3) ... [2023-08-26 22:57:15,580 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_93-evilcollapse_racefree.i [2023-08-26 22:57:15,595 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 22:57:15,595 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2023-08-26 22:57:15,595 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 22:57:15,659 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-26 22:57:15,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 252 places, 277 transitions, 562 flow [2023-08-26 22:57:15,785 INFO L124 PetriNetUnfolderBase]: 30/295 cut-off events. [2023-08-26 22:57:15,786 INFO L125 PetriNetUnfolderBase]: For 1/2 co-relation queries the response was YES. [2023-08-26 22:57:15,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 301 conditions, 295 events. 30/295 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 731 event pairs, 0 based on Foata normal form. 0/245 useless extension candidates. Maximal degree in co-relation 154. Up to 4 conditions per place. [2023-08-26 22:57:15,800 INFO L82 GeneralOperation]: Start removeDead. Operand has 252 places, 277 transitions, 562 flow [2023-08-26 22:57:15,813 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 250 places, 274 transitions, 556 flow [2023-08-26 22:57:15,817 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 22:57:15,829 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 250 places, 274 transitions, 556 flow [2023-08-26 22:57:15,834 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 250 places, 274 transitions, 556 flow [2023-08-26 22:57:15,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 250 places, 274 transitions, 556 flow [2023-08-26 22:57:15,888 INFO L124 PetriNetUnfolderBase]: 29/292 cut-off events. [2023-08-26 22:57:15,888 INFO L125 PetriNetUnfolderBase]: For 1/2 co-relation queries the response was YES. [2023-08-26 22:57:15,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 298 conditions, 292 events. 29/292 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 719 event pairs, 0 based on Foata normal form. 0/243 useless extension candidates. Maximal degree in co-relation 154. Up to 4 conditions per place. [2023-08-26 22:57:15,896 INFO L119 LiptonReduction]: Number of co-enabled transitions 5768 [2023-08-26 22:57:45,328 WARN L234 SmtUtils]: Spent 13.38s on a formula simplification. DAG size of input: 181 DAG size of output: 179 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-26 22:57:50,457 WARN L234 SmtUtils]: Spent 5.13s on a formula simplification that was a NOOP. DAG size: 177 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-26 22:58:01,031 WARN L234 SmtUtils]: Spent 10.57s on a formula simplification. DAG size of input: 181 DAG size of output: 179 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-26 22:58:25,286 WARN L234 SmtUtils]: Spent 14.00s on a formula simplification. DAG size of input: 186 DAG size of output: 184 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-26 22:58:42,687 WARN L234 SmtUtils]: Spent 12.79s on a formula simplification. DAG size of input: 186 DAG size of output: 184 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-26 22:58:48,640 WARN L234 SmtUtils]: Spent 5.95s on a formula simplification that was a NOOP. DAG size: 182 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-26 22:58:54,451 WARN L234 SmtUtils]: Spent 5.80s on a formula simplification that was a NOOP. DAG size: 182 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-26 22:59:00,553 WARN L234 SmtUtils]: Spent 6.10s on a formula simplification that was a NOOP. DAG size: 180 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-26 22:59:08,431 INFO L134 LiptonReduction]: Checked pairs total: 6168 [2023-08-26 22:59:08,431 INFO L136 LiptonReduction]: Total number of compositions: 309 [2023-08-26 22:59:08,443 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 22:59:08,446 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;@7ac6ba18, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 22:59:08,446 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-08-26 22:59:08,450 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 22:59:08,450 INFO L124 PetriNetUnfolderBase]: 2/5 cut-off events. [2023-08-26 22:59:08,450 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:59:08,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:59:08,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-26 22:59:08,451 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-26 22:59:08,455 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:59:08,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1096904, now seen corresponding path program 1 times [2023-08-26 22:59:08,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:59:08,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328201231] [2023-08-26 22:59:08,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:59:08,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:59:08,548 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-26 22:59:08,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2100747542] [2023-08-26 22:59:08,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:59:08,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:59:08,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:59:08,553 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 22:59:08,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-26 22:59:08,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:59:08,729 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 22:59:08,733 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:59:08,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:59:08,763 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 22:59:08,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:59:08,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328201231] [2023-08-26 22:59:08,765 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-26 22:59:08,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100747542] [2023-08-26 22:59:08,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100747542] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:59:08,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:59:08,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 22:59:08,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149452475] [2023-08-26 22:59:08,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:59:08,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:59:08,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:59:08,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:59:08,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:59:08,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 586 [2023-08-26 22:59:08,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 53 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 239.0) internal successors, (717), 3 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:59:08,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:59:08,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 586 [2023-08-26 22:59:08,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:59:09,144 INFO L124 PetriNetUnfolderBase]: 107/244 cut-off events. [2023-08-26 22:59:09,145 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 22:59:09,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 476 conditions, 244 events. 107/244 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 926 event pairs, 85 based on Foata normal form. 12/137 useless extension candidates. Maximal degree in co-relation 426. Up to 220 conditions per place. [2023-08-26 22:59:09,147 INFO L140 encePairwiseOnDemand]: 567/586 looper letters, 39 selfloop transitions, 3 changer transitions 0/46 dead transitions. [2023-08-26 22:59:09,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 46 transitions, 184 flow [2023-08-26 22:59:09,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:59:09,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:59:09,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 773 transitions. [2023-08-26 22:59:09,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4397042093287827 [2023-08-26 22:59:09,170 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 773 transitions. [2023-08-26 22:59:09,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 773 transitions. [2023-08-26 22:59:09,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:59:09,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 773 transitions. [2023-08-26 22:59:09,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 257.6666666666667) internal successors, (773), 3 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:59:09,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 586.0) internal successors, (2344), 4 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:59:09,191 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 586.0) internal successors, (2344), 4 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:59:09,192 INFO L175 Difference]: Start difference. First operand has 42 places, 53 transitions, 114 flow. Second operand 3 states and 773 transitions. [2023-08-26 22:59:09,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 46 transitions, 184 flow [2023-08-26 22:59:09,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 46 transitions, 184 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 22:59:09,197 INFO L231 Difference]: Finished difference. Result has 44 places, 44 transitions, 122 flow [2023-08-26 22:59:09,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=44, PETRI_TRANSITIONS=44} [2023-08-26 22:59:09,202 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 2 predicate places. [2023-08-26 22:59:09,202 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 44 transitions, 122 flow [2023-08-26 22:59:09,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 239.0) internal successors, (717), 3 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:59:09,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:59:09,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-26 22:59:09,213 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-26 22:59:09,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-08-26 22:59:09,409 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-26 22:59:09,410 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:59:09,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1097080, now seen corresponding path program 1 times [2023-08-26 22:59:09,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:59:09,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235100001] [2023-08-26 22:59:09,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:59:09,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:59:09,467 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-26 22:59:09,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1771623389] [2023-08-26 22:59:09,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:59:09,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:59:09,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:59:09,479 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 22:59:09,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-26 22:59:09,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:59:09,630 INFO L262 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 22:59:09,632 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:59:09,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:59:09,637 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 22:59:09,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:59:09,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235100001] [2023-08-26 22:59:09,638 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-26 22:59:09,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771623389] [2023-08-26 22:59:09,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771623389] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:59:09,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:59:09,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:59:09,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458017710] [2023-08-26 22:59:09,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:59:09,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:59:09,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:59:09,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:59:09,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:59:09,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 586 [2023-08-26 22:59:09,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 44 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 242.0) internal successors, (726), 3 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:59:09,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:59:09,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 586 [2023-08-26 22:59:09,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:59:09,795 INFO L124 PetriNetUnfolderBase]: 106/242 cut-off events. [2023-08-26 22:59:09,795 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-26 22:59:09,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 484 conditions, 242 events. 106/242 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 919 event pairs, 85 based on Foata normal form. 2/130 useless extension candidates. Maximal degree in co-relation 467. Up to 217 conditions per place. [2023-08-26 22:59:09,797 INFO L140 encePairwiseOnDemand]: 581/586 looper letters, 33 selfloop transitions, 5 changer transitions 0/42 dead transitions. [2023-08-26 22:59:09,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 42 transitions, 188 flow [2023-08-26 22:59:09,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:59:09,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:59:09,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 761 transitions. [2023-08-26 22:59:09,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4328782707622298 [2023-08-26 22:59:09,801 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 761 transitions. [2023-08-26 22:59:09,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 761 transitions. [2023-08-26 22:59:09,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:59:09,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 761 transitions. [2023-08-26 22:59:09,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 253.66666666666666) internal successors, (761), 3 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:59:09,807 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 586.0) internal successors, (2344), 4 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:59:09,808 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 586.0) internal successors, (2344), 4 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:59:09,808 INFO L175 Difference]: Start difference. First operand has 44 places, 44 transitions, 122 flow. Second operand 3 states and 761 transitions. [2023-08-26 22:59:09,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 42 transitions, 188 flow [2023-08-26 22:59:09,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 42 transitions, 184 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 22:59:09,811 INFO L231 Difference]: Finished difference. Result has 43 places, 42 transitions, 118 flow [2023-08-26 22:59:09,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=43, PETRI_TRANSITIONS=42} [2023-08-26 22:59:09,811 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places. [2023-08-26 22:59:09,812 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 42 transitions, 118 flow [2023-08-26 22:59:09,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 242.0) internal successors, (726), 3 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:59:09,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:59:09,812 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2023-08-26 22:59:09,823 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-26 22:59:10,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-08-26 22:59:10,019 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-26 22:59:10,019 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:59:10,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1054289520, now seen corresponding path program 1 times [2023-08-26 22:59:10,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:59:10,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945787335] [2023-08-26 22:59:10,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:59:10,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:59:10,042 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-26 22:59:10,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1559933694] [2023-08-26 22:59:10,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:59:10,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:59:10,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:59:10,044 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 22:59:10,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-26 22:59:10,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:59:10,148 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-26 22:59:10,148 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:59:10,156 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:59:10,156 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 22:59:10,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:59:10,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945787335] [2023-08-26 22:59:10,156 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-26 22:59:10,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559933694] [2023-08-26 22:59:10,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559933694] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:59:10,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:59:10,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 22:59:10,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619845916] [2023-08-26 22:59:10,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:59:10,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:59:10,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:59:10,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:59:10,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:59:10,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 586 [2023-08-26 22:59:10,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 42 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 242.66666666666666) internal successors, (728), 3 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:59:10,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:59:10,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 586 [2023-08-26 22:59:10,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:59:10,377 INFO L124 PetriNetUnfolderBase]: 106/246 cut-off events. [2023-08-26 22:59:10,377 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-26 22:59:10,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 498 conditions, 246 events. 106/246 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 929 event pairs, 85 based on Foata normal form. 2/134 useless extension candidates. Maximal degree in co-relation 448. Up to 223 conditions per place. [2023-08-26 22:59:10,379 INFO L140 encePairwiseOnDemand]: 581/586 looper letters, 39 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2023-08-26 22:59:10,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 45 transitions, 210 flow [2023-08-26 22:59:10,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:59:10,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:59:10,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 766 transitions. [2023-08-26 22:59:10,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43572241183162685 [2023-08-26 22:59:10,382 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 766 transitions. [2023-08-26 22:59:10,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 766 transitions. [2023-08-26 22:59:10,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:59:10,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 766 transitions. [2023-08-26 22:59:10,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 255.33333333333334) internal successors, (766), 3 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:59:10,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 586.0) internal successors, (2344), 4 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:59:10,388 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 586.0) internal successors, (2344), 4 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:59:10,388 INFO L175 Difference]: Start difference. First operand has 43 places, 42 transitions, 118 flow. Second operand 3 states and 766 transitions. [2023-08-26 22:59:10,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 45 transitions, 210 flow [2023-08-26 22:59:10,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 45 transitions, 200 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 22:59:10,390 INFO L231 Difference]: Finished difference. Result has 44 places, 43 transitions, 126 flow [2023-08-26 22:59:10,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=44, PETRI_TRANSITIONS=43} [2023-08-26 22:59:10,391 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 2 predicate places. [2023-08-26 22:59:10,391 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 43 transitions, 126 flow [2023-08-26 22:59:10,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 242.66666666666666) internal successors, (728), 3 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:59:10,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:59:10,392 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-26 22:59:10,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-26 22:59:10,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:59:10,599 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-26 22:59:10,600 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:59:10,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1675092926, now seen corresponding path program 1 times [2023-08-26 22:59:10,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:59:10,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316693416] [2023-08-26 22:59:10,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:59:10,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:59:10,635 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-26 22:59:10,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1523966222] [2023-08-26 22:59:10,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:59:10,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:59:10,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:59:10,637 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 22:59:10,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-26 22:59:10,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:59:10,798 INFO L262 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 22:59:10,799 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:59:10,821 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:59:10,822 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 22:59:10,839 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:59:10,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:59:10,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316693416] [2023-08-26 22:59:10,841 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-26 22:59:10,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523966222] [2023-08-26 22:59:10,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523966222] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 22:59:10,842 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-26 22:59:10,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-08-26 22:59:10,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850725738] [2023-08-26 22:59:10,842 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-26 22:59:10,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 22:59:10,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:59:10,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 22:59:10,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 22:59:10,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 586 [2023-08-26 22:59:10,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 43 transitions, 126 flow. Second operand has 6 states, 6 states have (on average 242.5) internal successors, (1455), 6 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:59:10,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:59:10,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 586 [2023-08-26 22:59:10,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:59:11,334 INFO L124 PetriNetUnfolderBase]: 108/258 cut-off events. [2023-08-26 22:59:11,335 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 22:59:11,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 541 conditions, 258 events. 108/258 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 995 event pairs, 85 based on Foata normal form. 6/147 useless extension candidates. Maximal degree in co-relation 464. Up to 221 conditions per place. [2023-08-26 22:59:11,336 INFO L140 encePairwiseOnDemand]: 579/586 looper letters, 43 selfloop transitions, 7 changer transitions 0/54 dead transitions. [2023-08-26 22:59:11,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 54 transitions, 270 flow [2023-08-26 22:59:11,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 22:59:11,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 22:59:11,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1504 transitions. [2023-08-26 22:59:11,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42775881683731515 [2023-08-26 22:59:11,341 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1504 transitions. [2023-08-26 22:59:11,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1504 transitions. [2023-08-26 22:59:11,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:59:11,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1504 transitions. [2023-08-26 22:59:11,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 250.66666666666666) internal successors, (1504), 6 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:59:11,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 586.0) internal successors, (4102), 7 states have internal predecessors, (4102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:59:11,353 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 586.0) internal successors, (4102), 7 states have internal predecessors, (4102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:59:11,353 INFO L175 Difference]: Start difference. First operand has 44 places, 43 transitions, 126 flow. Second operand 6 states and 1504 transitions. [2023-08-26 22:59:11,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 54 transitions, 270 flow [2023-08-26 22:59:11,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 54 transitions, 268 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 22:59:11,355 INFO L231 Difference]: Finished difference. Result has 52 places, 48 transitions, 200 flow [2023-08-26 22:59:11,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=200, PETRI_PLACES=52, PETRI_TRANSITIONS=48} [2023-08-26 22:59:11,356 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 10 predicate places. [2023-08-26 22:59:11,356 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 48 transitions, 200 flow [2023-08-26 22:59:11,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 242.5) internal successors, (1455), 6 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:59:11,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:59:11,357 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1] [2023-08-26 22:59:11,366 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-26 22:59:11,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:59:11,566 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-26 22:59:11,566 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:59:11,566 INFO L85 PathProgramCache]: Analyzing trace with hash -2104683792, now seen corresponding path program 2 times [2023-08-26 22:59:11,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:59:11,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428873800] [2023-08-26 22:59:11,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:59:11,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:59:11,622 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-26 22:59:11,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [862375704] [2023-08-26 22:59:11,622 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 22:59:11,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:59:11,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:59:11,624 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 22:59:11,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-26 22:59:11,823 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-26 22:59:11,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 22:59:11,825 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 22:59:11,826 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:59:11,831 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-26 22:59:11,831 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 22:59:11,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:59:11,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428873800] [2023-08-26 22:59:11,831 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-26 22:59:11,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862375704] [2023-08-26 22:59:11,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862375704] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:59:11,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:59:11,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:59:11,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001804049] [2023-08-26 22:59:11,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:59:11,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:59:11,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:59:11,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:59:11,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:59:11,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 586 [2023-08-26 22:59:11,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 48 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 243.0) internal successors, (729), 3 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:59:11,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:59:11,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 586 [2023-08-26 22:59:11,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:59:12,077 INFO L124 PetriNetUnfolderBase]: 108/256 cut-off events. [2023-08-26 22:59:12,077 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-08-26 22:59:12,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 578 conditions, 256 events. 108/256 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 986 event pairs, 85 based on Foata normal form. 1/141 useless extension candidates. Maximal degree in co-relation 478. Up to 235 conditions per place. [2023-08-26 22:59:12,078 INFO L140 encePairwiseOnDemand]: 582/586 looper letters, 42 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2023-08-26 22:59:12,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 48 transitions, 288 flow [2023-08-26 22:59:12,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:59:12,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:59:12,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 763 transitions. [2023-08-26 22:59:12,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4340159271899886 [2023-08-26 22:59:12,081 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 763 transitions. [2023-08-26 22:59:12,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 763 transitions. [2023-08-26 22:59:12,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:59:12,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 763 transitions. [2023-08-26 22:59:12,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 254.33333333333334) internal successors, (763), 3 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:59:12,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 586.0) internal successors, (2344), 4 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:59:12,088 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 586.0) internal successors, (2344), 4 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:59:12,088 INFO L175 Difference]: Start difference. First operand has 52 places, 48 transitions, 200 flow. Second operand 3 states and 763 transitions. [2023-08-26 22:59:12,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 48 transitions, 288 flow [2023-08-26 22:59:12,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 48 transitions, 278 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-26 22:59:12,095 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 200 flow [2023-08-26 22:59:12,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=200, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2023-08-26 22:59:12,097 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 12 predicate places. [2023-08-26 22:59:12,097 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 200 flow [2023-08-26 22:59:12,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 243.0) internal successors, (729), 3 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:59:12,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:59:12,098 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1] [2023-08-26 22:59:12,104 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-26 22:59:12,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:59:12,304 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-26 22:59:12,304 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:59:12,304 INFO L85 PathProgramCache]: Analyzing trace with hash -820682490, now seen corresponding path program 3 times [2023-08-26 22:59:12,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:59:12,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434480134] [2023-08-26 22:59:12,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:59:12,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:59:12,390 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-26 22:59:12,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [958214626] [2023-08-26 22:59:12,390 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 22:59:12,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:59:12,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:59:12,401 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 22:59:12,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-26 22:59:12,692 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-26 22:59:12,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 22:59:12,695 INFO L262 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-26 22:59:12,696 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:59:12,715 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-26 22:59:12,715 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 22:59:12,899 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-26 22:59:12,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:59:12,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434480134] [2023-08-26 22:59:12,899 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-26 22:59:12,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958214626] [2023-08-26 22:59:12,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958214626] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 22:59:12,899 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-26 22:59:12,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-08-26 22:59:12,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903099714] [2023-08-26 22:59:12,900 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-26 22:59:12,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 22:59:12,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:59:12,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 22:59:12,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-26 22:59:12,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 586 [2023-08-26 22:59:12,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 200 flow. Second operand has 6 states, 6 states have (on average 233.66666666666666) internal successors, (1402), 6 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:59:12,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:59:12,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 586 [2023-08-26 22:59:12,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:59:14,127 INFO L124 PetriNetUnfolderBase]: 107/253 cut-off events. [2023-08-26 22:59:14,127 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2023-08-26 22:59:14,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 567 conditions, 253 events. 107/253 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 967 event pairs, 85 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 472. Up to 221 conditions per place. [2023-08-26 22:59:14,129 INFO L140 encePairwiseOnDemand]: 581/586 looper letters, 37 selfloop transitions, 9 changer transitions 0/50 dead transitions. [2023-08-26 22:59:14,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 50 transitions, 309 flow [2023-08-26 22:59:14,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 22:59:14,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 22:59:14,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1440 transitions. [2023-08-26 22:59:14,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40955631399317405 [2023-08-26 22:59:14,134 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1440 transitions. [2023-08-26 22:59:14,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1440 transitions. [2023-08-26 22:59:14,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:59:14,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1440 transitions. [2023-08-26 22:59:14,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 240.0) internal successors, (1440), 6 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:59:14,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 586.0) internal successors, (4102), 7 states have internal predecessors, (4102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:59:14,144 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 586.0) internal successors, (4102), 7 states have internal predecessors, (4102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:59:14,144 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 200 flow. Second operand 6 states and 1440 transitions. [2023-08-26 22:59:14,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 50 transitions, 309 flow [2023-08-26 22:59:14,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 50 transitions, 303 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 22:59:14,147 INFO L231 Difference]: Finished difference. Result has 58 places, 49 transitions, 226 flow [2023-08-26 22:59:14,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=226, PETRI_PLACES=58, PETRI_TRANSITIONS=49} [2023-08-26 22:59:14,147 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 16 predicate places. [2023-08-26 22:59:14,148 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 49 transitions, 226 flow [2023-08-26 22:59:14,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 233.66666666666666) internal successors, (1402), 6 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:59:14,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:59:14,149 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1] [2023-08-26 22:59:14,158 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-26 22:59:14,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:59:14,355 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-26 22:59:14,355 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:59:14,356 INFO L85 PathProgramCache]: Analyzing trace with hash -820682532, now seen corresponding path program 1 times [2023-08-26 22:59:14,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:59:14,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311038335] [2023-08-26 22:59:14,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:59:14,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:59:14,425 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-26 22:59:14,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1723759887] [2023-08-26 22:59:14,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:59:14,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:59:14,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:59:14,426 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 22:59:14,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-26 22:59:14,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:59:14,884 INFO L262 TraceCheckSpWp]: Trace formula consists of 1304 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 22:59:14,886 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:59:14,924 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 22:59:14,924 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 22:59:14,979 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 22:59:14,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:59:14,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311038335] [2023-08-26 22:59:14,980 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-26 22:59:14,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723759887] [2023-08-26 22:59:14,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1723759887] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 22:59:14,980 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-26 22:59:14,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-08-26 22:59:14,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928212680] [2023-08-26 22:59:14,981 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-26 22:59:14,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-26 22:59:14,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:59:14,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-26 22:59:14,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-08-26 22:59:14,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 586 [2023-08-26 22:59:14,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 49 transitions, 226 flow. Second operand has 12 states, 12 states have (on average 242.33333333333334) internal successors, (2908), 12 states have internal predecessors, (2908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:59:14,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:59:14,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 586 [2023-08-26 22:59:14,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:59:16,143 INFO L124 PetriNetUnfolderBase]: 108/277 cut-off events. [2023-08-26 22:59:16,143 INFO L125 PetriNetUnfolderBase]: For 134/134 co-relation queries the response was YES. [2023-08-26 22:59:16,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 696 conditions, 277 events. 108/277 cut-off events. For 134/134 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1154 event pairs, 85 based on Foata normal form. 12/177 useless extension candidates. Maximal degree in co-relation 499. Up to 221 conditions per place. [2023-08-26 22:59:16,145 INFO L140 encePairwiseOnDemand]: 579/586 looper letters, 50 selfloop transitions, 14 changer transitions 0/68 dead transitions. [2023-08-26 22:59:16,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 68 transitions, 508 flow [2023-08-26 22:59:16,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-26 22:59:16,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-26 22:59:16,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2972 transitions. [2023-08-26 22:59:16,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42263936291240045 [2023-08-26 22:59:16,153 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2972 transitions. [2023-08-26 22:59:16,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2972 transitions. [2023-08-26 22:59:16,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:59:16,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2972 transitions. [2023-08-26 22:59:16,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 247.66666666666666) internal successors, (2972), 12 states have internal predecessors, (2972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:59:16,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 586.0) internal successors, (7618), 13 states have internal predecessors, (7618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:59:16,170 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 586.0) internal successors, (7618), 13 states have internal predecessors, (7618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:59:16,170 INFO L175 Difference]: Start difference. First operand has 58 places, 49 transitions, 226 flow. Second operand 12 states and 2972 transitions. [2023-08-26 22:59:16,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 68 transitions, 508 flow [2023-08-26 22:59:16,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 68 transitions, 481 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-08-26 22:59:16,173 INFO L231 Difference]: Finished difference. Result has 73 places, 57 transitions, 364 flow [2023-08-26 22:59:16,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=364, PETRI_PLACES=73, PETRI_TRANSITIONS=57} [2023-08-26 22:59:16,174 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 31 predicate places. [2023-08-26 22:59:16,174 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 57 transitions, 364 flow [2023-08-26 22:59:16,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 242.33333333333334) internal successors, (2908), 12 states have internal predecessors, (2908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:59:16,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:59:16,175 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 2, 1, 1, 1] [2023-08-26 22:59:16,189 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-26 22:59:16,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:59:16,384 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-26 22:59:16,384 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:59:16,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1424628252, now seen corresponding path program 2 times [2023-08-26 22:59:16,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:59:16,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268176254] [2023-08-26 22:59:16,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:59:16,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:59:16,538 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-26 22:59:16,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1499380318] [2023-08-26 22:59:16,539 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 22:59:16,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:59:16,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:59:16,552 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 22:59:16,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-26 22:59:17,275 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 22:59:17,275 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 22:59:17,286 INFO L262 TraceCheckSpWp]: Trace formula consists of 2708 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-26 22:59:17,289 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:59:17,382 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 23 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 22:59:17,382 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 22:59:17,583 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 23 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 22:59:17,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:59:17,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268176254] [2023-08-26 22:59:17,583 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-26 22:59:17,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499380318] [2023-08-26 22:59:17,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499380318] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 22:59:17,583 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-26 22:59:17,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-08-26 22:59:17,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222121588] [2023-08-26 22:59:17,584 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-26 22:59:17,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-26 22:59:17,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:59:17,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-26 22:59:17,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-08-26 22:59:17,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 586 [2023-08-26 22:59:17,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 57 transitions, 364 flow. Second operand has 24 states, 24 states have (on average 242.16666666666666) internal successors, (5812), 24 states have internal predecessors, (5812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:59:17,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:59:17,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 586 [2023-08-26 22:59:17,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:59:19,173 INFO L124 PetriNetUnfolderBase]: 108/325 cut-off events. [2023-08-26 22:59:19,173 INFO L125 PetriNetUnfolderBase]: For 1352/1352 co-relation queries the response was YES. [2023-08-26 22:59:19,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1033 conditions, 325 events. 108/325 cut-off events. For 1352/1352 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1300 event pairs, 85 based on Foata normal form. 24/237 useless extension candidates. Maximal degree in co-relation 579. Up to 221 conditions per place. [2023-08-26 22:59:19,176 INFO L140 encePairwiseOnDemand]: 579/586 looper letters, 74 selfloop transitions, 26 changer transitions 0/104 dead transitions. [2023-08-26 22:59:19,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 104 transitions, 1058 flow [2023-08-26 22:59:19,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-26 22:59:19,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-26 22:59:19,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 5918 transitions. [2023-08-26 22:59:19,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42079067121729236 [2023-08-26 22:59:19,188 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 5918 transitions. [2023-08-26 22:59:19,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 5918 transitions. [2023-08-26 22:59:19,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:59:19,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 5918 transitions. [2023-08-26 22:59:19,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 246.58333333333334) internal successors, (5918), 24 states have internal predecessors, (5918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:59:19,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 586.0) internal successors, (14650), 25 states have internal predecessors, (14650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:59:19,219 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 586.0) internal successors, (14650), 25 states have internal predecessors, (14650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:59:19,219 INFO L175 Difference]: Start difference. First operand has 73 places, 57 transitions, 364 flow. Second operand 24 states and 5918 transitions. [2023-08-26 22:59:19,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 104 transitions, 1058 flow [2023-08-26 22:59:19,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 104 transitions, 1011 flow, removed 19 selfloop flow, removed 4 redundant places. [2023-08-26 22:59:19,226 INFO L231 Difference]: Finished difference. Result has 105 places, 71 transitions, 622 flow [2023-08-26 22:59:19,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=622, PETRI_PLACES=105, PETRI_TRANSITIONS=71} [2023-08-26 22:59:19,227 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 63 predicate places. [2023-08-26 22:59:19,227 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 71 transitions, 622 flow [2023-08-26 22:59:19,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 242.16666666666666) internal successors, (5812), 24 states have internal predecessors, (5812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:59:19,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:59:19,229 INFO L208 CegarLoopForPetriNet]: trace histogram [23, 2, 1, 1, 1] [2023-08-26 22:59:19,239 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-26 22:59:19,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-08-26 22:59:19,439 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-26 22:59:19,440 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:59:19,440 INFO L85 PathProgramCache]: Analyzing trace with hash 2120727708, now seen corresponding path program 3 times [2023-08-26 22:59:19,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:59:19,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490114815] [2023-08-26 22:59:19,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:59:19,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:59:19,682 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-26 22:59:19,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1179120364] [2023-08-26 22:59:19,682 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 22:59:19,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:59:19,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:59:19,685 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 22:59:19,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-26 22:59:20,533 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-26 22:59:20,533 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 22:59:20,538 INFO L262 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 22:59:20,542 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:59:20,598 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-08-26 22:59:20,598 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 22:59:20,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:59:20,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490114815] [2023-08-26 22:59:20,598 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-26 22:59:20,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179120364] [2023-08-26 22:59:20,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179120364] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:59:20,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:59:20,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 22:59:20,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464148634] [2023-08-26 22:59:20,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:59:20,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 22:59:20,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:59:20,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 22:59:20,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 22:59:20,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 586 [2023-08-26 22:59:20,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 71 transitions, 622 flow. Second operand has 6 states, 6 states have (on average 233.16666666666666) internal successors, (1399), 6 states have internal predecessors, (1399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:59:20,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:59:20,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 586 [2023-08-26 22:59:20,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:59:20,915 INFO L124 PetriNetUnfolderBase]: 107/302 cut-off events. [2023-08-26 22:59:20,915 INFO L125 PetriNetUnfolderBase]: For 816/816 co-relation queries the response was YES. [2023-08-26 22:59:20,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 967 conditions, 302 events. 107/302 cut-off events. For 816/816 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1102 event pairs, 85 based on Foata normal form. 22/213 useless extension candidates. Maximal degree in co-relation 681. Up to 212 conditions per place. [2023-08-26 22:59:20,918 INFO L140 encePairwiseOnDemand]: 578/586 looper letters, 77 selfloop transitions, 7 changer transitions 0/88 dead transitions. [2023-08-26 22:59:20,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 88 transitions, 907 flow [2023-08-26 22:59:20,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 22:59:20,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 22:59:20,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1433 transitions. [2023-08-26 22:59:20,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4075654152445961 [2023-08-26 22:59:20,921 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1433 transitions. [2023-08-26 22:59:20,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1433 transitions. [2023-08-26 22:59:20,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:59:20,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1433 transitions. [2023-08-26 22:59:20,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 238.83333333333334) internal successors, (1433), 6 states have internal predecessors, (1433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:59:20,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 586.0) internal successors, (4102), 7 states have internal predecessors, (4102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:59:20,928 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 586.0) internal successors, (4102), 7 states have internal predecessors, (4102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:59:20,928 INFO L175 Difference]: Start difference. First operand has 105 places, 71 transitions, 622 flow. Second operand 6 states and 1433 transitions. [2023-08-26 22:59:20,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 88 transitions, 907 flow [2023-08-26 22:59:20,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 88 transitions, 790 flow, removed 30 selfloop flow, removed 13 redundant places. [2023-08-26 22:59:20,938 INFO L231 Difference]: Finished difference. Result has 96 places, 66 transitions, 472 flow [2023-08-26 22:59:20,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=450, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=472, PETRI_PLACES=96, PETRI_TRANSITIONS=66} [2023-08-26 22:59:20,939 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 54 predicate places. [2023-08-26 22:59:20,939 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 66 transitions, 472 flow [2023-08-26 22:59:20,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 233.16666666666666) internal successors, (1399), 6 states have internal predecessors, (1399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:59:20,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:59:20,939 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:59:20,951 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-08-26 22:59:21,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:59:21,147 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-26 22:59:21,148 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:59:21,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1319507627, now seen corresponding path program 1 times [2023-08-26 22:59:21,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:59:21,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753815553] [2023-08-26 22:59:21,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:59:21,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:59:21,396 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-26 22:59:21,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2100052773] [2023-08-26 22:59:21,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:59:21,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:59:21,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:59:21,401 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 22:59:21,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-26 22:59:22,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:59:22,957 INFO L262 TraceCheckSpWp]: Trace formula consists of 5276 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-26 22:59:22,963 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:59:23,221 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 1 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:59:23,222 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 22:59:23,615 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 1 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:59:23,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:59:23,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753815553] [2023-08-26 22:59:23,615 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-26 22:59:23,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100052773] [2023-08-26 22:59:23,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100052773] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 22:59:23,615 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-26 22:59:23,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 32 [2023-08-26 22:59:23,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584584569] [2023-08-26 22:59:23,616 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-26 22:59:23,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-26 22:59:23,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:59:23,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-26 22:59:23,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2023-08-26 22:59:23,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 586 [2023-08-26 22:59:23,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 66 transitions, 472 flow. Second operand has 32 states, 32 states have (on average 242.1875) internal successors, (7750), 32 states have internal predecessors, (7750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:59:23,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:59:23,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 586 [2023-08-26 22:59:23,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:59:25,582 INFO L124 PetriNetUnfolderBase]: 107/326 cut-off events. [2023-08-26 22:59:25,583 INFO L125 PetriNetUnfolderBase]: For 4833/4833 co-relation queries the response was YES. [2023-08-26 22:59:25,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1000 conditions, 326 events. 107/326 cut-off events. For 4833/4833 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1160 event pairs, 85 based on Foata normal form. 16/231 useless extension candidates. Maximal degree in co-relation 632. Up to 220 conditions per place. [2023-08-26 22:59:25,585 INFO L140 encePairwiseOnDemand]: 581/586 looper letters, 60 selfloop transitions, 34 changer transitions 0/98 dead transitions. [2023-08-26 22:59:25,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 98 transitions, 973 flow [2023-08-26 22:59:25,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-08-26 22:59:25,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-08-26 22:59:25,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 7819 transitions. [2023-08-26 22:59:25,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4169688566552901 [2023-08-26 22:59:25,595 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 7819 transitions. [2023-08-26 22:59:25,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 7819 transitions. [2023-08-26 22:59:25,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:59:25,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 7819 transitions. [2023-08-26 22:59:25,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 244.34375) internal successors, (7819), 32 states have internal predecessors, (7819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:59:25,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 586.0) internal successors, (19338), 33 states have internal predecessors, (19338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:59:25,628 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 586.0) internal successors, (19338), 33 states have internal predecessors, (19338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:59:25,628 INFO L175 Difference]: Start difference. First operand has 96 places, 66 transitions, 472 flow. Second operand 32 states and 7819 transitions. [2023-08-26 22:59:25,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 98 transitions, 973 flow [2023-08-26 22:59:25,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 98 transitions, 964 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-26 22:59:25,638 INFO L231 Difference]: Finished difference. Result has 133 places, 75 transitions, 665 flow [2023-08-26 22:59:25,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=463, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=665, PETRI_PLACES=133, PETRI_TRANSITIONS=75} [2023-08-26 22:59:25,639 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 91 predicate places. [2023-08-26 22:59:25,639 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 75 transitions, 665 flow [2023-08-26 22:59:25,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 242.1875) internal successors, (7750), 32 states have internal predecessors, (7750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:59:25,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:59:25,640 INFO L208 CegarLoopForPetriNet]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:59:25,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-26 22:59:25,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-26 22:59:25,853 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-26 22:59:25,853 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:59:25,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1103142827, now seen corresponding path program 2 times [2023-08-26 22:59:25,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:59:25,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736808422] [2023-08-26 22:59:25,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:59:25,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:59:26,106 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-26 22:59:26,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [219345983] [2023-08-26 22:59:26,107 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 22:59:26,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:59:26,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:59:26,108 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 22:59:26,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-26 22:59:27,459 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-26 22:59:27,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 22:59:27,463 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 22:59:27,468 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:59:27,576 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 466 trivial. 0 not checked. [2023-08-26 22:59:27,576 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 22:59:27,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:59:27,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736808422] [2023-08-26 22:59:27,577 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-26 22:59:27,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219345983] [2023-08-26 22:59:27,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219345983] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:59:27,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:59:27,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:59:27,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526521035] [2023-08-26 22:59:27,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:59:27,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:59:27,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:59:27,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:59:27,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:59:27,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 586 [2023-08-26 22:59:27,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 75 transitions, 665 flow. Second operand has 3 states, 3 states have (on average 247.66666666666666) internal successors, (743), 3 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:59:27,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:59:27,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 586 [2023-08-26 22:59:27,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:59:27,772 INFO L124 PetriNetUnfolderBase]: 64/252 cut-off events. [2023-08-26 22:59:27,772 INFO L125 PetriNetUnfolderBase]: For 1174/1174 co-relation queries the response was YES. [2023-08-26 22:59:27,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 985 conditions, 252 events. 64/252 cut-off events. For 1174/1174 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 949 event pairs, 0 based on Foata normal form. 0/196 useless extension candidates. Maximal degree in co-relation 636. Up to 210 conditions per place. [2023-08-26 22:59:27,774 INFO L140 encePairwiseOnDemand]: 581/586 looper letters, 87 selfloop transitions, 2 changer transitions 0/93 dead transitions. [2023-08-26 22:59:27,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 93 transitions, 879 flow [2023-08-26 22:59:27,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:59:27,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:59:27,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 791 transitions. [2023-08-26 22:59:27,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4499431171786121 [2023-08-26 22:59:27,776 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 791 transitions. [2023-08-26 22:59:27,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 791 transitions. [2023-08-26 22:59:27,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:59:27,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 791 transitions. [2023-08-26 22:59:27,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 263.6666666666667) internal successors, (791), 3 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:59:27,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 586.0) internal successors, (2344), 4 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:59:27,780 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 586.0) internal successors, (2344), 4 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:59:27,780 INFO L175 Difference]: Start difference. First operand has 133 places, 75 transitions, 665 flow. Second operand 3 states and 791 transitions. [2023-08-26 22:59:27,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 93 transitions, 879 flow [2023-08-26 22:59:27,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 93 transitions, 812 flow, removed 9 selfloop flow, removed 22 redundant places. [2023-08-26 22:59:27,794 INFO L231 Difference]: Finished difference. Result has 112 places, 73 transitions, 602 flow [2023-08-26 22:59:27,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=594, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=602, PETRI_PLACES=112, PETRI_TRANSITIONS=73} [2023-08-26 22:59:27,795 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 70 predicate places. [2023-08-26 22:59:27,795 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 73 transitions, 602 flow [2023-08-26 22:59:27,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 247.66666666666666) internal successors, (743), 3 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:59:27,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:59:27,795 INFO L208 CegarLoopForPetriNet]: trace histogram [34, 2, 1, 1, 1] [2023-08-26 22:59:27,811 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-26 22:59:28,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-08-26 22:59:28,006 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-26 22:59:28,008 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:59:28,008 INFO L85 PathProgramCache]: Analyzing trace with hash -2131083856, now seen corresponding path program 4 times [2023-08-26 22:59:28,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:59:28,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667339847] [2023-08-26 22:59:28,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:59:28,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:59:28,384 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-26 22:59:28,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2139819184] [2023-08-26 22:59:28,385 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 22:59:28,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:59:28,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:59:28,386 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 22:59:28,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-26 22:59:47,420 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 22:59:47,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 22:59:47,484 INFO L262 TraceCheckSpWp]: Trace formula consists of 8090 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 22:59:47,489 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:59:47,546 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 475 trivial. 0 not checked. [2023-08-26 22:59:47,546 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 22:59:51,475 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 475 trivial. 0 not checked. [2023-08-26 22:59:51,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:59:51,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667339847] [2023-08-26 22:59:51,475 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-26 22:59:51,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139819184] [2023-08-26 22:59:51,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2139819184] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 22:59:51,476 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-26 22:59:51,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-08-26 22:59:51,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894765337] [2023-08-26 22:59:51,476 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-26 22:59:51,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 22:59:51,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:59:51,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 22:59:51,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-26 22:59:51,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 586 [2023-08-26 22:59:51,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 73 transitions, 602 flow. Second operand has 6 states, 6 states have (on average 240.33333333333334) internal successors, (1442), 6 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:59:51,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:59:51,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 586 [2023-08-26 22:59:51,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:59:57,696 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-08-26 22:59:57,717 INFO L124 PetriNetUnfolderBase]: 68/250 cut-off events. [2023-08-26 22:59:57,717 INFO L125 PetriNetUnfolderBase]: For 2058/2058 co-relation queries the response was YES. [2023-08-26 22:59:57,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 976 conditions, 250 events. 68/250 cut-off events. For 2058/2058 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 602 event pairs, 51 based on Foata normal form. 55/266 useless extension candidates. Maximal degree in co-relation 596. Up to 138 conditions per place. [2023-08-26 22:59:57,719 INFO L140 encePairwiseOnDemand]: 580/586 looper letters, 122 selfloop transitions, 7 changer transitions 0/133 dead transitions. [2023-08-26 22:59:57,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 133 transitions, 1318 flow [2023-08-26 22:59:57,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 22:59:57,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 22:59:57,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1472 transitions. [2023-08-26 22:59:57,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41865756541524457 [2023-08-26 22:59:57,721 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1472 transitions. [2023-08-26 22:59:57,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1472 transitions. [2023-08-26 22:59:57,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:59:57,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1472 transitions. [2023-08-26 22:59:57,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 245.33333333333334) internal successors, (1472), 6 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:59:57,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 586.0) internal successors, (4102), 7 states have internal predecessors, (4102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:59:57,726 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 586.0) internal successors, (4102), 7 states have internal predecessors, (4102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:59:57,726 INFO L175 Difference]: Start difference. First operand has 112 places, 73 transitions, 602 flow. Second operand 6 states and 1472 transitions. [2023-08-26 22:59:57,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 133 transitions, 1318 flow [2023-08-26 22:59:57,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 133 transitions, 952 flow, removed 158 selfloop flow, removed 9 redundant places. [2023-08-26 22:59:57,738 INFO L231 Difference]: Finished difference. Result has 107 places, 71 transitions, 452 flow [2023-08-26 22:59:57,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=357, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=452, PETRI_PLACES=107, PETRI_TRANSITIONS=71} [2023-08-26 22:59:57,739 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 65 predicate places. [2023-08-26 22:59:57,739 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 71 transitions, 452 flow [2023-08-26 22:59:57,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 240.33333333333334) internal successors, (1442), 6 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:59:57,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:59:57,740 INFO L208 CegarLoopForPetriNet]: trace histogram [60, 2, 2, 2, 1, 1, 1, 1, 1] [2023-08-26 22:59:57,814 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-26 22:59:57,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-26 22:59:57,949 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-26 22:59:57,949 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:59:57,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1433131468, now seen corresponding path program 1 times [2023-08-26 22:59:57,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:59:57,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639025668] [2023-08-26 22:59:57,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:59:57,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:59:58,457 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-26 22:59:58,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [87018963] [2023-08-26 22:59:58,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:59:58,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:59:58,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:59:58,465 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 22:59:58,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-26 23:00:02,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:00:02,634 INFO L262 TraceCheckSpWp]: Trace formula consists of 14227 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-26 23:00:02,642 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:00:02,731 INFO L134 CoverageAnalysis]: Checked inductivity of 1896 backedges. 0 proven. 964 refuted. 0 times theorem prover too weak. 932 trivial. 0 not checked. [2023-08-26 23:00:02,731 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:00:02,941 INFO L134 CoverageAnalysis]: Checked inductivity of 1896 backedges. 0 proven. 964 refuted. 0 times theorem prover too weak. 932 trivial. 0 not checked. [2023-08-26 23:00:02,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:00:02,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639025668] [2023-08-26 23:00:02,941 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-26 23:00:02,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87018963] [2023-08-26 23:00:02,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [87018963] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:00:02,941 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-26 23:00:02,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-08-26 23:00:02,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495187004] [2023-08-26 23:00:02,942 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-26 23:00:02,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-26 23:00:02,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:00:02,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-26 23:00:02,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-08-26 23:00:02,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 586 [2023-08-26 23:00:02,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 71 transitions, 452 flow. Second operand has 8 states, 8 states have (on average 240.375) internal successors, (1923), 8 states have internal predecessors, (1923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:00:02,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:00:02,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 586 [2023-08-26 23:00:02,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:00:03,628 INFO L124 PetriNetUnfolderBase]: 70/348 cut-off events. [2023-08-26 23:00:03,628 INFO L125 PetriNetUnfolderBase]: For 3139/3139 co-relation queries the response was YES. [2023-08-26 23:00:03,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1192 conditions, 348 events. 70/348 cut-off events. For 3139/3139 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 524 event pairs, 51 based on Foata normal form. 4/313 useless extension candidates. Maximal degree in co-relation 833. Up to 138 conditions per place. [2023-08-26 23:00:03,630 INFO L140 encePairwiseOnDemand]: 582/586 looper letters, 219 selfloop transitions, 8 changer transitions 0/231 dead transitions. [2023-08-26 23:00:03,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 231 transitions, 1787 flow [2023-08-26 23:00:03,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-26 23:00:03,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-26 23:00:03,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1955 transitions. [2023-08-26 23:00:03,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41702218430034127 [2023-08-26 23:00:03,633 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1955 transitions. [2023-08-26 23:00:03,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1955 transitions. [2023-08-26 23:00:03,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:00:03,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1955 transitions. [2023-08-26 23:00:03,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 244.375) internal successors, (1955), 8 states have internal predecessors, (1955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:00:03,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 586.0) internal successors, (5274), 9 states have internal predecessors, (5274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:00:03,639 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 586.0) internal successors, (5274), 9 states have internal predecessors, (5274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:00:03,639 INFO L175 Difference]: Start difference. First operand has 107 places, 71 transitions, 452 flow. Second operand 8 states and 1955 transitions. [2023-08-26 23:00:03,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 231 transitions, 1787 flow [2023-08-26 23:00:03,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 231 transitions, 1783 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 23:00:03,649 INFO L231 Difference]: Finished difference. Result has 116 places, 74 transitions, 688 flow [2023-08-26 23:00:03,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=688, PETRI_PLACES=116, PETRI_TRANSITIONS=74} [2023-08-26 23:00:03,650 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 74 predicate places. [2023-08-26 23:00:03,650 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 74 transitions, 688 flow [2023-08-26 23:00:03,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 240.375) internal successors, (1923), 8 states have internal predecessors, (1923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:00:03,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:00:03,651 INFO L208 CegarLoopForPetriNet]: trace histogram [180, 6, 6, 2, 1, 1, 1, 1, 1] [2023-08-26 23:00:03,702 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-26 23:00:03,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-26 23:00:03,870 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-26 23:00:03,871 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:00:03,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1968650948, now seen corresponding path program 2 times [2023-08-26 23:00:03,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:00:03,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13454657] [2023-08-26 23:00:03,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:00:03,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:00:05,664 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-26 23:00:05,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [937668003] [2023-08-26 23:00:05,664 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 23:00:05,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:00:05,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:00:05,669 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 23:00:05,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-26 23:00:16,536 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 23:00:16,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 23:00:16,855 INFO L262 TraceCheckSpWp]: Trace formula consists of 42467 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-26 23:00:16,881 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:00:17,172 INFO L134 CoverageAnalysis]: Checked inductivity of 17228 backedges. 0 proven. 14436 refuted. 0 times theorem prover too weak. 2792 trivial. 0 not checked. [2023-08-26 23:00:17,172 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:00:17,497 INFO L134 CoverageAnalysis]: Checked inductivity of 17228 backedges. 0 proven. 14436 refuted. 0 times theorem prover too weak. 2792 trivial. 0 not checked. [2023-08-26 23:00:17,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:00:17,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13454657] [2023-08-26 23:00:17,497 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-26 23:00:17,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937668003] [2023-08-26 23:00:17,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [937668003] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:00:17,497 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-26 23:00:17,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2023-08-26 23:00:17,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73261621] [2023-08-26 23:00:17,497 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-26 23:00:17,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-26 23:00:17,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:00:17,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-26 23:00:17,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-08-26 23:00:17,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 586 [2023-08-26 23:00:17,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 74 transitions, 688 flow. Second operand has 12 states, 12 states have (on average 240.83333333333334) internal successors, (2890), 12 states have internal predecessors, (2890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:00:17,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:00:17,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 586 [2023-08-26 23:00:17,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:00:19,021 INFO L124 PetriNetUnfolderBase]: 74/480 cut-off events. [2023-08-26 23:00:19,021 INFO L125 PetriNetUnfolderBase]: For 5848/5848 co-relation queries the response was YES. [2023-08-26 23:00:19,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1776 conditions, 480 events. 74/480 cut-off events. For 5848/5848 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 533 event pairs, 51 based on Foata normal form. 4/445 useless extension candidates. Maximal degree in co-relation 1414. Up to 138 conditions per place. [2023-08-26 23:00:19,024 INFO L140 encePairwiseOnDemand]: 582/586 looper letters, 347 selfloop transitions, 12 changer transitions 0/363 dead transitions. [2023-08-26 23:00:19,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 363 transitions, 2949 flow [2023-08-26 23:00:19,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-26 23:00:19,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-26 23:00:19,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2919 transitions. [2023-08-26 23:00:19,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4151023890784983 [2023-08-26 23:00:19,027 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2919 transitions. [2023-08-26 23:00:19,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2919 transitions. [2023-08-26 23:00:19,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:00:19,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2919 transitions. [2023-08-26 23:00:19,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 243.25) internal successors, (2919), 12 states have internal predecessors, (2919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:00:19,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 586.0) internal successors, (7618), 13 states have internal predecessors, (7618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:00:19,036 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 586.0) internal successors, (7618), 13 states have internal predecessors, (7618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:00:19,036 INFO L175 Difference]: Start difference. First operand has 116 places, 74 transitions, 688 flow. Second operand 12 states and 2919 transitions. [2023-08-26 23:00:19,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 363 transitions, 2949 flow [2023-08-26 23:00:19,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 363 transitions, 2945 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 23:00:19,047 INFO L231 Difference]: Finished difference. Result has 130 places, 79 transitions, 1029 flow [2023-08-26 23:00:19,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=684, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1029, PETRI_PLACES=130, PETRI_TRANSITIONS=79} [2023-08-26 23:00:19,048 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 88 predicate places. [2023-08-26 23:00:19,048 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 79 transitions, 1029 flow [2023-08-26 23:00:19,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 240.83333333333334) internal successors, (2890), 12 states have internal predecessors, (2890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:00:19,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:00:19,048 INFO L208 CegarLoopForPetriNet]: trace histogram [300, 10, 10, 2, 1, 1, 1, 1, 1] [2023-08-26 23:00:19,157 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-26 23:00:19,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:00:19,253 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-26 23:00:19,253 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:00:19,253 INFO L85 PathProgramCache]: Analyzing trace with hash 540744636, now seen corresponding path program 3 times [2023-08-26 23:00:19,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:00:19,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069602223] [2023-08-26 23:00:19,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:00:19,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:00:21,897 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-26 23:00:21,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [303169644] [2023-08-26 23:00:21,897 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 23:00:21,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:00:21,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:00:21,898 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 23:00:21,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process Received shutdown request... [2023-08-26 23:11:33,772 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-26 23:11:33,772 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-26 23:11:34,973 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2023-08-26 23:11:34,981 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forcibly destroying the process [2023-08-26 23:11:34,996 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 [2023-08-26 23:11:35,020 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-08-26 23:11:35,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 137 [2023-08-26 23:11:35,022 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2023-08-26 23:11:35,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-26 23:11:35,022 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 328 with TraceHistMax 300,while AutomatonFreeRefinementEngine was Timeout during CAMEL. [2023-08-26 23:11:35,023 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 25 remaining) [2023-08-26 23:11:35,023 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 25 remaining) [2023-08-26 23:11:35,023 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 25 remaining) [2023-08-26 23:11:35,023 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 25 remaining) [2023-08-26 23:11:35,023 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 25 remaining) [2023-08-26 23:11:35,023 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 25 remaining) [2023-08-26 23:11:35,023 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 25 remaining) [2023-08-26 23:11:35,023 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 25 remaining) [2023-08-26 23:11:35,024 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 25 remaining) [2023-08-26 23:11:35,024 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 25 remaining) [2023-08-26 23:11:35,024 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 25 remaining) [2023-08-26 23:11:35,024 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 25 remaining) [2023-08-26 23:11:35,024 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 25 remaining) [2023-08-26 23:11:35,024 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 25 remaining) [2023-08-26 23:11:35,024 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 25 remaining) [2023-08-26 23:11:35,024 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 25 remaining) [2023-08-26 23:11:35,024 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr4ASSERT_VIOLATIONASSERT (7 of 25 remaining) [2023-08-26 23:11:35,024 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 25 remaining) [2023-08-26 23:11:35,025 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 25 remaining) [2023-08-26 23:11:35,025 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 25 remaining) [2023-08-26 23:11:35,025 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 25 remaining) [2023-08-26 23:11:35,025 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 25 remaining) [2023-08-26 23:11:35,025 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 25 remaining) [2023-08-26 23:11:35,025 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr4ASSERT_VIOLATIONASSERT (0 of 25 remaining) [2023-08-26 23:11:35,025 INFO L445 BasicCegarLoop]: Path program histogram: [4, 3, 3, 2, 1, 1, 1] [2023-08-26 23:11:35,029 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 23:11:35,029 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 23:11:35,031 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 11:11:35 BasicIcfg [2023-08-26 23:11:35,031 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 23:11:35,032 INFO L158 Benchmark]: Toolchain (without parser) took 860951.41ms. Allocated memory was 358.6MB in the beginning and 1.7GB in the end (delta: 1.3GB). Free memory was 332.7MB in the beginning and 1.3GB in the end (delta: -958.6MB). Peak memory consumption was 718.2MB. Max. memory is 16.0GB. [2023-08-26 23:11:35,032 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 358.6MB. Free memory is still 334.8MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 23:11:35,032 INFO L158 Benchmark]: CACSL2BoogieTranslator took 749.02ms. Allocated memory is still 358.6MB. Free memory was 332.7MB in the beginning and 301.3MB in the end (delta: 31.4MB). Peak memory consumption was 31.5MB. Max. memory is 16.0GB. [2023-08-26 23:11:35,032 INFO L158 Benchmark]: Boogie Procedure Inliner took 84.21ms. Allocated memory is still 358.6MB. Free memory was 301.3MB in the beginning and 297.8MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-26 23:11:35,033 INFO L158 Benchmark]: Boogie Preprocessor took 38.23ms. Allocated memory is still 358.6MB. Free memory was 297.8MB in the beginning and 295.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 23:11:35,033 INFO L158 Benchmark]: RCFGBuilder took 609.33ms. Allocated memory is still 358.6MB. Free memory was 295.4MB in the beginning and 323.6MB in the end (delta: -28.2MB). Peak memory consumption was 21.1MB. Max. memory is 16.0GB. [2023-08-26 23:11:35,033 INFO L158 Benchmark]: TraceAbstraction took 859456.32ms. Allocated memory was 358.6MB in the beginning and 1.7GB in the end (delta: 1.3GB). Free memory was 322.4MB in the beginning and 1.3GB in the end (delta: -968.9MB). Peak memory consumption was 705.5MB. Max. memory is 16.0GB. [2023-08-26 23:11:35,035 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 358.6MB. Free memory is still 334.8MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 749.02ms. Allocated memory is still 358.6MB. Free memory was 332.7MB in the beginning and 301.3MB in the end (delta: 31.4MB). Peak memory consumption was 31.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 84.21ms. Allocated memory is still 358.6MB. Free memory was 301.3MB in the beginning and 297.8MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 38.23ms. Allocated memory is still 358.6MB. Free memory was 297.8MB in the beginning and 295.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 609.33ms. Allocated memory is still 358.6MB. Free memory was 295.4MB in the beginning and 323.6MB in the end (delta: -28.2MB). Peak memory consumption was 21.1MB. Max. memory is 16.0GB. * TraceAbstraction took 859456.32ms. Allocated memory was 358.6MB in the beginning and 1.7GB in the end (delta: 1.3GB). Free memory was 322.4MB in the beginning and 1.3GB in the end (delta: -968.9MB). Peak memory consumption was 705.5MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 244]: Unsoundness Warning unspecified type, defaulting to int C: short [244] - GenericResultAtLocation [Line: 244]: Unsoundness Warning unspecified type, defaulting to int C: short [244] - GenericResultAtLocation [Line: 1084]: Unsoundness Warning unspecified type, defaulting to int C: long [1084] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 112.6s, 250 PlacesBefore, 42 PlacesAfterwards, 274 TransitionsBefore, 53 TransitionsAfterwards, 5768 CoEnabledTransitionPairs, 9 FixpointIterations, 148 TrivialSequentialCompositions, 108 ConcurrentSequentialCompositions, 19 TrivialYvCompositions, 21 ConcurrentYvCompositions, 13 ChoiceCompositions, 309 TotalNumberOfCompositions, 6168 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5046, independent: 4945, independent conditional: 0, independent unconditional: 4945, dependent: 101, dependent conditional: 0, dependent unconditional: 101, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3054, independent: 3032, independent conditional: 0, independent unconditional: 3032, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5046, independent: 1913, independent conditional: 0, independent unconditional: 1913, dependent: 79, dependent conditional: 0, dependent unconditional: 79, unknown: 3054, unknown conditional: 0, unknown unconditional: 3054] , Statistics on independence cache: Total cache size (in pairs): 84, Positive cache size: 77, Positive conditional cache size: 0, Positive unconditional cache size: 77, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 1082]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 328 with TraceHistMax 300,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 1076]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 328 with TraceHistMax 300,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 1076]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 328 with TraceHistMax 300,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 1073]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 328 with TraceHistMax 300,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 1073]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 328 with TraceHistMax 300,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 1082]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 328 with TraceHistMax 300,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 1083]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 328 with TraceHistMax 300,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 1082]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 328 with TraceHistMax 300,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 1083]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 328 with TraceHistMax 300,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 1076]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 328 with TraceHistMax 300,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 1076]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 328 with TraceHistMax 300,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 1065]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 328 with TraceHistMax 300,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 1065]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 328 with TraceHistMax 300,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 1060]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 328 with TraceHistMax 300,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 1060]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 328 with TraceHistMax 300,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 1060]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 328 with TraceHistMax 300,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 1060]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 328 with TraceHistMax 300,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 998]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while CegarLoopForPetriNet was analyzing trace of length 328 with TraceHistMax 300,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 336 locations, 25 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: 859.3s, OverallIterations: 15, TraceHistogramMax: 300, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 16.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 112.8s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 245 SdHoareTripleChecker+Valid, 12.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 245 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 12.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 86 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1696 IncrementalHoareTripleChecker+Invalid, 1783 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 86 mSolverCounterUnsat, 0 mSDtfsCounter, 1696 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 826 GetRequests, 705 SyntacticMatches, 20 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1029occurred in iteration=14, InterpolantAutomatonStates: 127, 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: 3.8s SsaConstructionTime, 25.7s SatisfiabilityAnalysisTime, 7.0s InterpolantComputationTime, 465 NumberOfCodeBlocks, 401 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 823 ConstructedInterpolants, 38 QuantifiedInterpolants, 2609 SizeOfPredicates, 35 NumberOfNonLiveVariables, 75911 ConjunctsInSsa, 90 ConjunctsInUnsatCore, 22 InterpolantComputations, 6 PerfectInterpolantSequences, 9305/41057 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown