./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/chl-chromosome-subst.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/chl-chromosome-subst.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b68e155d55184c39a54e11a2c420443b840324481c8995060134516395f2d120 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 14:43:42,161 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 14:43:42,163 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 14:43:42,204 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 14:43:42,204 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 14:43:42,207 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 14:43:42,209 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 14:43:42,211 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 14:43:42,212 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 14:43:42,216 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 14:43:42,217 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 14:43:42,219 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 14:43:42,219 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 14:43:42,221 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 14:43:42,222 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 14:43:42,227 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 14:43:42,228 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 14:43:42,229 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 14:43:42,231 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 14:43:42,233 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 14:43:42,236 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 14:43:42,237 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 14:43:42,238 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 14:43:42,238 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 14:43:42,244 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 14:43:42,245 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 14:43:42,246 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 14:43:42,246 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 14:43:42,248 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 14:43:42,248 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 14:43:42,249 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 14:43:42,253 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 14:43:42,254 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 14:43:42,255 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 14:43:42,256 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 14:43:42,256 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 14:43:42,257 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 14:43:42,257 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 14:43:42,257 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 14:43:42,258 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 14:43:42,258 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 14:43:42,259 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 14:43:42,278 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 14:43:42,279 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 14:43:42,280 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 14:43:42,280 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 14:43:42,281 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 14:43:42,281 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 14:43:42,281 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 14:43:42,281 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 14:43:42,281 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 14:43:42,282 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 14:43:42,282 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 14:43:42,282 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 14:43:42,282 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 14:43:42,283 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 14:43:42,283 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 14:43:42,283 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 14:43:42,283 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 14:43:42,283 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 14:43:42,283 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 14:43:42,284 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 14:43:42,284 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 14:43:42,284 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 14:43:42,284 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 14:43:42,284 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 14:43:42,284 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 14:43:42,284 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 14:43:42,285 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:43:42,285 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 14:43:42,285 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 14:43:42,285 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 14:43:42,285 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 14:43:42,285 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 14:43:42,285 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 14:43:42,286 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 14:43:42,286 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 14:43:42,286 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 14:43:42,286 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 14:43:42,286 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b68e155d55184c39a54e11a2c420443b840324481c8995060134516395f2d120 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 14:43:42,576 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 14:43:42,599 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 14:43:42,601 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 14:43:42,601 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 14:43:42,602 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 14:43:42,602 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-chromosome-subst.wvr.c [2023-08-30 14:43:43,640 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 14:43:43,826 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 14:43:43,827 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-subst.wvr.c [2023-08-30 14:43:43,835 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd2f18f91/89db94e2446948c095817684da81b6eb/FLAGe09cc2f1d [2023-08-30 14:43:43,844 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd2f18f91/89db94e2446948c095817684da81b6eb [2023-08-30 14:43:43,846 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 14:43:43,846 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 14:43:43,847 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 14:43:43,847 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 14:43:43,849 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 14:43:43,850 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:43:43" (1/1) ... [2023-08-30 14:43:43,850 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@541353c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:43:43, skipping insertion in model container [2023-08-30 14:43:43,850 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:43:43" (1/1) ... [2023-08-30 14:43:43,854 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 14:43:43,866 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 14:43:43,991 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-subst.wvr.c[3097,3110] [2023-08-30 14:43:44,002 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:43:44,011 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 14:43:44,041 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-subst.wvr.c[3097,3110] [2023-08-30 14:43:44,047 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:43:44,058 INFO L208 MainTranslator]: Completed translation [2023-08-30 14:43:44,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:43:44 WrapperNode [2023-08-30 14:43:44,059 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 14:43:44,060 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 14:43:44,060 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 14:43:44,060 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 14:43:44,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:43:44" (1/1) ... [2023-08-30 14:43:44,086 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:43:44" (1/1) ... [2023-08-30 14:43:44,117 INFO L138 Inliner]: procedures = 26, calls = 47, calls flagged for inlining = 17, calls inlined = 25, statements flattened = 335 [2023-08-30 14:43:44,121 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 14:43:44,121 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 14:43:44,122 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 14:43:44,122 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 14:43:44,128 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:43:44" (1/1) ... [2023-08-30 14:43:44,128 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:43:44" (1/1) ... [2023-08-30 14:43:44,137 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:43:44" (1/1) ... [2023-08-30 14:43:44,139 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:43:44" (1/1) ... [2023-08-30 14:43:44,145 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:43:44" (1/1) ... [2023-08-30 14:43:44,147 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:43:44" (1/1) ... [2023-08-30 14:43:44,149 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:43:44" (1/1) ... [2023-08-30 14:43:44,150 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:43:44" (1/1) ... [2023-08-30 14:43:44,152 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 14:43:44,152 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 14:43:44,153 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 14:43:44,153 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 14:43:44,157 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:43:44" (1/1) ... [2023-08-30 14:43:44,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:43:44,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:43:44,207 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) [2023-08-30 14:43:44,272 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 [2023-08-30 14:43:44,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 14:43:44,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 14:43:44,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 14:43:44,300 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 14:43:44,300 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 14:43:44,301 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 14:43:44,301 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 14:43:44,301 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 14:43:44,301 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 14:43:44,301 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 14:43:44,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 14:43:44,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 14:43:44,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 14:43:44,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 14:43:44,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 14:43:44,303 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 14:43:44,431 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 14:43:44,432 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 14:43:44,815 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 14:43:44,824 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 14:43:44,824 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-30 14:43:44,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:43:44 BoogieIcfgContainer [2023-08-30 14:43:44,826 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 14:43:44,827 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 14:43:44,828 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 14:43:44,829 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 14:43:44,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 02:43:43" (1/3) ... [2023-08-30 14:43:44,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7585fbe7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:43:44, skipping insertion in model container [2023-08-30 14:43:44,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:43:44" (2/3) ... [2023-08-30 14:43:44,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7585fbe7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:43:44, skipping insertion in model container [2023-08-30 14:43:44,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:43:44" (3/3) ... [2023-08-30 14:43:44,831 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-subst.wvr.c [2023-08-30 14:43:44,836 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 14:43:44,842 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 14:43:44,843 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2023-08-30 14:43:44,843 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 14:43:45,045 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 14:43:45,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 387 places, 412 transitions, 848 flow [2023-08-30 14:43:45,209 INFO L130 PetriNetUnfolder]: 35/409 cut-off events. [2023-08-30 14:43:45,210 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 14:43:45,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 422 conditions, 409 events. 35/409 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 876 event pairs, 0 based on Foata normal form. 0/344 useless extension candidates. Maximal degree in co-relation 308. Up to 2 conditions per place. [2023-08-30 14:43:45,218 INFO L82 GeneralOperation]: Start removeDead. Operand has 387 places, 412 transitions, 848 flow [2023-08-30 14:43:45,230 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 362 places, 385 transitions, 785 flow [2023-08-30 14:43:45,233 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:43:45,248 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 362 places, 385 transitions, 785 flow [2023-08-30 14:43:45,253 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 362 places, 385 transitions, 785 flow [2023-08-30 14:43:45,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 362 places, 385 transitions, 785 flow [2023-08-30 14:43:45,317 INFO L130 PetriNetUnfolder]: 33/385 cut-off events. [2023-08-30 14:43:45,317 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 14:43:45,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 397 conditions, 385 events. 33/385 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 848 event pairs, 0 based on Foata normal form. 0/322 useless extension candidates. Maximal degree in co-relation 308. Up to 2 conditions per place. [2023-08-30 14:43:45,334 INFO L119 LiptonReduction]: Number of co-enabled transitions 35358 [2023-08-30 14:44:01,973 INFO L134 LiptonReduction]: Checked pairs total: 37939 [2023-08-30 14:44:01,973 INFO L136 LiptonReduction]: Total number of compositions: 496 [2023-08-30 14:44:01,983 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:44:01,987 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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;@ef74a20, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:44:01,987 INFO L358 AbstractCegarLoop]: Starting to check reachability of 57 error locations. [2023-08-30 14:44:01,988 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 14:44:01,989 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:44:01,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:44:01,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 14:44:01,989 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-08-30 14:44:01,992 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:44:01,992 INFO L85 PathProgramCache]: Analyzing trace with hash 54461, now seen corresponding path program 1 times [2023-08-30 14:44:01,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:44:01,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044751579] [2023-08-30 14:44:01,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:44:01,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:44:02,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:44:02,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:44:02,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:44:02,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044751579] [2023-08-30 14:44:02,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044751579] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:44:02,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:44:02,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:44:02,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023928840] [2023-08-30 14:44:02,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:44:02,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:44:02,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:44:02,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:44:02,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:44:02,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 373 out of 908 [2023-08-30 14:44:02,206 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 131 flow. Second operand has 3 states, 3 states have (on average 373.6666666666667) internal successors, (1121), 3 states have internal predecessors, (1121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:02,206 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:44:02,206 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 373 of 908 [2023-08-30 14:44:02,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:44:02,958 INFO L130 PetriNetUnfolder]: 4760/6763 cut-off events. [2023-08-30 14:44:02,959 INFO L131 PetriNetUnfolder]: For 345/345 co-relation queries the response was YES. [2023-08-30 14:44:02,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13841 conditions, 6763 events. 4760/6763 cut-off events. For 345/345 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 34301 event pairs, 4157 based on Foata normal form. 0/2779 useless extension candidates. Maximal degree in co-relation 12700. Up to 6763 conditions per place. [2023-08-30 14:44:03,004 INFO L137 encePairwiseOnDemand]: 897/908 looper letters, 47 selfloop transitions, 1 changer transitions 0/48 dead transitions. [2023-08-30 14:44:03,005 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 48 transitions, 207 flow [2023-08-30 14:44:03,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:44:03,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:44:03,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1177 transitions. [2023-08-30 14:44:03,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43208516886930987 [2023-08-30 14:44:03,017 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1177 transitions. [2023-08-30 14:44:03,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1177 transitions. [2023-08-30 14:44:03,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:44:03,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1177 transitions. [2023-08-30 14:44:03,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 392.3333333333333) internal successors, (1177), 3 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:03,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 908.0) internal successors, (3632), 4 states have internal predecessors, (3632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:03,031 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 908.0) internal successors, (3632), 4 states have internal predecessors, (3632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:03,032 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 131 flow. Second operand 3 states and 1177 transitions. [2023-08-30 14:44:03,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 48 transitions, 207 flow [2023-08-30 14:44:03,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 48 transitions, 198 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 14:44:03,037 INFO L231 Difference]: Finished difference. Result has 49 places, 48 transitions, 104 flow [2023-08-30 14:44:03,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=908, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=49, PETRI_TRANSITIONS=48} [2023-08-30 14:44:03,040 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -13 predicate places. [2023-08-30 14:44:03,040 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 48 transitions, 104 flow [2023-08-30 14:44:03,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 373.6666666666667) internal successors, (1121), 3 states have internal predecessors, (1121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:03,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:44:03,041 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 14:44:03,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 14:44:03,041 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-08-30 14:44:03,042 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:44:03,042 INFO L85 PathProgramCache]: Analyzing trace with hash 54462, now seen corresponding path program 1 times [2023-08-30 14:44:03,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:44:03,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269115211] [2023-08-30 14:44:03,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:44:03,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:44:03,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:44:03,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:44:03,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:44:03,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269115211] [2023-08-30 14:44:03,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269115211] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:44:03,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:44:03,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:44:03,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369744926] [2023-08-30 14:44:03,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:44:03,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:44:03,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:44:03,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:44:03,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:44:03,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 373 out of 908 [2023-08-30 14:44:03,171 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 48 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 373.6666666666667) internal successors, (1121), 3 states have internal predecessors, (1121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:03,171 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:44:03,171 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 373 of 908 [2023-08-30 14:44:03,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:44:04,596 INFO L130 PetriNetUnfolder]: 9519/13522 cut-off events. [2023-08-30 14:44:04,596 INFO L131 PetriNetUnfolder]: For 152/152 co-relation queries the response was YES. [2023-08-30 14:44:04,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27470 conditions, 13522 events. 9519/13522 cut-off events. For 152/152 co-relation queries the response was YES. Maximal size of possible extension queue 872. Compared 75596 event pairs, 8314 based on Foata normal form. 0/5557 useless extension candidates. Maximal degree in co-relation 27464. Up to 6764 conditions per place. [2023-08-30 14:44:04,662 INFO L137 encePairwiseOnDemand]: 899/908 looper letters, 86 selfloop transitions, 6 changer transitions 0/92 dead transitions. [2023-08-30 14:44:04,663 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 92 transitions, 382 flow [2023-08-30 14:44:04,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:44:04,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:44:04,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1214 transitions. [2023-08-30 14:44:04,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4456681350954479 [2023-08-30 14:44:04,666 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1214 transitions. [2023-08-30 14:44:04,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1214 transitions. [2023-08-30 14:44:04,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:44:04,667 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1214 transitions. [2023-08-30 14:44:04,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 404.6666666666667) internal successors, (1214), 3 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:04,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 908.0) internal successors, (3632), 4 states have internal predecessors, (3632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:04,674 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 908.0) internal successors, (3632), 4 states have internal predecessors, (3632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:04,674 INFO L175 Difference]: Start difference. First operand has 49 places, 48 transitions, 104 flow. Second operand 3 states and 1214 transitions. [2023-08-30 14:44:04,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 92 transitions, 382 flow [2023-08-30 14:44:04,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 92 transitions, 381 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:44:04,677 INFO L231 Difference]: Finished difference. Result has 52 places, 53 transitions, 153 flow [2023-08-30 14:44:04,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=908, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=153, PETRI_PLACES=52, PETRI_TRANSITIONS=53} [2023-08-30 14:44:04,677 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -10 predicate places. [2023-08-30 14:44:04,678 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 53 transitions, 153 flow [2023-08-30 14:44:04,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 373.6666666666667) internal successors, (1121), 3 states have internal predecessors, (1121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:04,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:44:04,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 14:44:04,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 14:44:04,679 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-08-30 14:44:04,679 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:44:04,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1689929, now seen corresponding path program 1 times [2023-08-30 14:44:04,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:44:04,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33566170] [2023-08-30 14:44:04,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:44:04,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:44:04,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:44:04,765 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:44:04,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:44:04,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33566170] [2023-08-30 14:44:04,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33566170] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:44:04,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138268649] [2023-08-30 14:44:04,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:44:04,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:44:04,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:44:04,796 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) [2023-08-30 14:44:04,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 14:44:04,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:44:04,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 14:44:04,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:44:04,967 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:44:04,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:44:04,979 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:44:04,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138268649] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:44:04,980 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:44:04,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2023-08-30 14:44:04,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719517532] [2023-08-30 14:44:04,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:44:04,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 14:44:04,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:44:04,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 14:44:04,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-30 14:44:05,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 373 out of 908 [2023-08-30 14:44:05,027 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 53 transitions, 153 flow. Second operand has 6 states, 6 states have (on average 374.0) internal successors, (2244), 6 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:05,027 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:44:05,028 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 373 of 908 [2023-08-30 14:44:05,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:44:08,314 INFO L130 PetriNetUnfolder]: 23796/33799 cut-off events. [2023-08-30 14:44:08,315 INFO L131 PetriNetUnfolder]: For 380/380 co-relation queries the response was YES. [2023-08-30 14:44:08,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68699 conditions, 33799 events. 23796/33799 cut-off events. For 380/380 co-relation queries the response was YES. Maximal size of possible extension queue 1612. Compared 208475 event pairs, 20785 based on Foata normal form. 0/13906 useless extension candidates. Maximal degree in co-relation 68690. Up to 6765 conditions per place. [2023-08-30 14:44:08,465 INFO L137 encePairwiseOnDemand]: 899/908 looper letters, 203 selfloop transitions, 21 changer transitions 0/224 dead transitions. [2023-08-30 14:44:08,466 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 224 transitions, 1009 flow [2023-08-30 14:44:08,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 14:44:08,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 14:44:08,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2471 transitions. [2023-08-30 14:44:08,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45356093979441997 [2023-08-30 14:44:08,470 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2471 transitions. [2023-08-30 14:44:08,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2471 transitions. [2023-08-30 14:44:08,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:44:08,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2471 transitions. [2023-08-30 14:44:08,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 411.8333333333333) internal successors, (2471), 6 states have internal predecessors, (2471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:08,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 908.0) internal successors, (6356), 7 states have internal predecessors, (6356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:08,483 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 908.0) internal successors, (6356), 7 states have internal predecessors, (6356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:08,484 INFO L175 Difference]: Start difference. First operand has 52 places, 53 transitions, 153 flow. Second operand 6 states and 2471 transitions. [2023-08-30 14:44:08,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 224 transitions, 1009 flow [2023-08-30 14:44:08,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 224 transitions, 985 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:44:08,489 INFO L231 Difference]: Finished difference. Result has 58 places, 68 transitions, 291 flow [2023-08-30 14:44:08,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=908, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=291, PETRI_PLACES=58, PETRI_TRANSITIONS=68} [2023-08-30 14:44:08,490 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -4 predicate places. [2023-08-30 14:44:08,490 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 68 transitions, 291 flow [2023-08-30 14:44:08,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 374.0) internal successors, (2244), 6 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:08,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:44:08,492 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 14:44:08,508 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 14:44:08,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:44:08,698 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-08-30 14:44:08,698 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:44:08,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1193336962, now seen corresponding path program 2 times [2023-08-30 14:44:08,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:44:08,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982031970] [2023-08-30 14:44:08,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:44:08,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:44:08,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:44:08,821 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:44:08,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:44:08,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982031970] [2023-08-30 14:44:08,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982031970] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:44:08,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049566594] [2023-08-30 14:44:08,821 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 14:44:08,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:44:08,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:44:08,823 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) [2023-08-30 14:44:08,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 14:44:08,905 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 14:44:08,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 14:44:08,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 14:44:08,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:44:08,916 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 14:44:08,916 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:44:08,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049566594] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:44:08,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:44:08,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 14:44:08,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569170645] [2023-08-30 14:44:08,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:44:08,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:44:08,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:44:08,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:44:08,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 14:44:08,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 376 out of 908 [2023-08-30 14:44:08,956 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 68 transitions, 291 flow. Second operand has 3 states, 3 states have (on average 377.0) internal successors, (1131), 3 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:08,956 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:44:08,956 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 376 of 908 [2023-08-30 14:44:08,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:44:12,345 INFO L130 PetriNetUnfolder]: 23796/33796 cut-off events. [2023-08-30 14:44:12,346 INFO L131 PetriNetUnfolder]: For 385/385 co-relation queries the response was YES. [2023-08-30 14:44:12,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68720 conditions, 33796 events. 23796/33796 cut-off events. For 385/385 co-relation queries the response was YES. Maximal size of possible extension queue 1932. Compared 213062 event pairs, 20785 based on Foata normal form. 3/13905 useless extension candidates. Maximal degree in co-relation 68708. Up to 33796 conditions per place. [2023-08-30 14:44:12,489 INFO L137 encePairwiseOnDemand]: 904/908 looper letters, 64 selfloop transitions, 1 changer transitions 0/65 dead transitions. [2023-08-30 14:44:12,489 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 65 transitions, 391 flow [2023-08-30 14:44:12,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:44:12,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:44:12,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1176 transitions. [2023-08-30 14:44:12,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43171806167400884 [2023-08-30 14:44:12,492 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1176 transitions. [2023-08-30 14:44:12,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1176 transitions. [2023-08-30 14:44:12,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:44:12,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1176 transitions. [2023-08-30 14:44:12,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 392.0) internal successors, (1176), 3 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:12,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 908.0) internal successors, (3632), 4 states have internal predecessors, (3632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:12,500 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 908.0) internal successors, (3632), 4 states have internal predecessors, (3632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:12,500 INFO L175 Difference]: Start difference. First operand has 58 places, 68 transitions, 291 flow. Second operand 3 states and 1176 transitions. [2023-08-30 14:44:12,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 65 transitions, 391 flow [2023-08-30 14:44:12,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 65 transitions, 319 flow, removed 12 selfloop flow, removed 5 redundant places. [2023-08-30 14:44:12,502 INFO L231 Difference]: Finished difference. Result has 52 places, 65 transitions, 191 flow [2023-08-30 14:44:12,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=908, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=191, PETRI_PLACES=52, PETRI_TRANSITIONS=65} [2023-08-30 14:44:12,503 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -10 predicate places. [2023-08-30 14:44:12,503 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 65 transitions, 191 flow [2023-08-30 14:44:12,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 377.0) internal successors, (1131), 3 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:12,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:44:12,504 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:44:12,525 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 14:44:12,709 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,SelfDestructingSolverStorable3 [2023-08-30 14:44:12,709 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-08-30 14:44:12,710 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:44:12,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1064991367, now seen corresponding path program 1 times [2023-08-30 14:44:12,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:44:12,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391988324] [2023-08-30 14:44:12,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:44:12,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:44:12,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:44:12,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:44:12,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:44:12,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391988324] [2023-08-30 14:44:12,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391988324] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:44:12,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:44:12,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 14:44:12,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658649961] [2023-08-30 14:44:12,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:44:12,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:44:12,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:44:12,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:44:12,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:44:12,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 370 out of 908 [2023-08-30 14:44:12,818 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 65 transitions, 191 flow. Second operand has 3 states, 3 states have (on average 372.6666666666667) internal successors, (1118), 3 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:12,818 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:44:12,819 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 370 of 908 [2023-08-30 14:44:12,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:44:15,342 INFO L130 PetriNetUnfolder]: 19037/27040 cut-off events. [2023-08-30 14:44:15,343 INFO L131 PetriNetUnfolder]: For 304/304 co-relation queries the response was YES. [2023-08-30 14:44:15,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54954 conditions, 27040 events. 19037/27040 cut-off events. For 304/304 co-relation queries the response was YES. Maximal size of possible extension queue 1611. Compared 166365 event pairs, 16628 based on Foata normal form. 1/11121 useless extension candidates. Maximal degree in co-relation 54945. Up to 27032 conditions per place. [2023-08-30 14:44:15,459 INFO L137 encePairwiseOnDemand]: 901/908 looper letters, 51 selfloop transitions, 12 changer transitions 0/63 dead transitions. [2023-08-30 14:44:15,459 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 63 transitions, 309 flow [2023-08-30 14:44:15,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:44:15,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:44:15,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1161 transitions. [2023-08-30 14:44:15,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4262114537444934 [2023-08-30 14:44:15,463 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1161 transitions. [2023-08-30 14:44:15,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1161 transitions. [2023-08-30 14:44:15,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:44:15,463 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1161 transitions. [2023-08-30 14:44:15,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 387.0) internal successors, (1161), 3 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:15,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 908.0) internal successors, (3632), 4 states have internal predecessors, (3632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:15,471 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 908.0) internal successors, (3632), 4 states have internal predecessors, (3632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:15,471 INFO L175 Difference]: Start difference. First operand has 52 places, 65 transitions, 191 flow. Second operand 3 states and 1161 transitions. [2023-08-30 14:44:15,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 63 transitions, 309 flow [2023-08-30 14:44:15,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 63 transitions, 308 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:44:15,473 INFO L231 Difference]: Finished difference. Result has 54 places, 63 transitions, 220 flow [2023-08-30 14:44:15,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=908, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=54, PETRI_TRANSITIONS=63} [2023-08-30 14:44:15,473 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -8 predicate places. [2023-08-30 14:44:15,474 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 63 transitions, 220 flow [2023-08-30 14:44:15,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 372.6666666666667) internal successors, (1118), 3 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:15,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:44:15,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:44:15,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 14:44:15,475 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-08-30 14:44:15,475 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:44:15,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1572430903, now seen corresponding path program 1 times [2023-08-30 14:44:15,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:44:15,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119801164] [2023-08-30 14:44:15,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:44:15,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:44:15,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:44:15,546 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 14:44:15,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:44:15,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119801164] [2023-08-30 14:44:15,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119801164] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:44:15,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937757093] [2023-08-30 14:44:15,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:44:15,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:44:15,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:44:15,565 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) [2023-08-30 14:44:15,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 14:44:15,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:44:15,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 14:44:15,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:44:15,699 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 14:44:15,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:44:15,714 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 14:44:15,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [937757093] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:44:15,715 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:44:15,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2023-08-30 14:44:15,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486090589] [2023-08-30 14:44:15,715 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:44:15,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 14:44:15,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:44:15,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 14:44:15,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-08-30 14:44:15,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 364 out of 908 [2023-08-30 14:44:15,851 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 63 transitions, 220 flow. Second operand has 8 states, 8 states have (on average 366.375) internal successors, (2931), 8 states have internal predecessors, (2931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:15,851 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:44:15,851 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 364 of 908 [2023-08-30 14:44:15,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:44:16,762 INFO L130 PetriNetUnfolder]: 4760/6772 cut-off events. [2023-08-30 14:44:16,763 INFO L131 PetriNetUnfolder]: For 82/82 co-relation queries the response was YES. [2023-08-30 14:44:16,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13790 conditions, 6772 events. 4760/6772 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 34287 event pairs, 4157 based on Foata normal form. 9/2803 useless extension candidates. Maximal degree in co-relation 13779. Up to 6761 conditions per place. [2023-08-30 14:44:16,779 INFO L137 encePairwiseOnDemand]: 901/908 looper letters, 42 selfloop transitions, 15 changer transitions 0/57 dead transitions. [2023-08-30 14:44:16,779 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 57 transitions, 292 flow [2023-08-30 14:44:16,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 14:44:16,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 14:44:16,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2250 transitions. [2023-08-30 14:44:16,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4129955947136564 [2023-08-30 14:44:16,784 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2250 transitions. [2023-08-30 14:44:16,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2250 transitions. [2023-08-30 14:44:16,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:44:16,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2250 transitions. [2023-08-30 14:44:16,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:16,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 908.0) internal successors, (6356), 7 states have internal predecessors, (6356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:16,794 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 908.0) internal successors, (6356), 7 states have internal predecessors, (6356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:16,794 INFO L175 Difference]: Start difference. First operand has 54 places, 63 transitions, 220 flow. Second operand 6 states and 2250 transitions. [2023-08-30 14:44:16,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 57 transitions, 292 flow [2023-08-30 14:44:16,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 57 transitions, 280 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:44:16,795 INFO L231 Difference]: Finished difference. Result has 60 places, 57 transitions, 220 flow [2023-08-30 14:44:16,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=908, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=220, PETRI_PLACES=60, PETRI_TRANSITIONS=57} [2023-08-30 14:44:16,796 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -2 predicate places. [2023-08-30 14:44:16,796 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 57 transitions, 220 flow [2023-08-30 14:44:16,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 366.375) internal successors, (2931), 8 states have internal predecessors, (2931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:16,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:44:16,797 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:44:16,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 14:44:17,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:44:17,004 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-08-30 14:44:17,004 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:44:17,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1390982649, now seen corresponding path program 2 times [2023-08-30 14:44:17,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:44:17,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835472468] [2023-08-30 14:44:17,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:44:17,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:44:17,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:44:17,150 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-30 14:44:17,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:44:17,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835472468] [2023-08-30 14:44:17,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835472468] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:44:17,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773636442] [2023-08-30 14:44:17,151 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 14:44:17,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:44:17,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:44:17,165 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) [2023-08-30 14:44:17,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 14:44:17,307 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 14:44:17,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 14:44:17,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 14:44:17,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:44:17,373 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-30 14:44:17,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:44:17,433 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-30 14:44:17,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773636442] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:44:17,433 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:44:17,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 17 [2023-08-30 14:44:17,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618235702] [2023-08-30 14:44:17,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:44:17,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-30 14:44:17,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:44:17,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-30 14:44:17,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2023-08-30 14:44:17,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 364 out of 908 [2023-08-30 14:44:17,676 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 57 transitions, 220 flow. Second operand has 17 states, 17 states have (on average 365.6470588235294) internal successors, (6216), 17 states have internal predecessors, (6216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:17,676 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:44:17,676 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 364 of 908 [2023-08-30 14:44:17,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:44:18,338 INFO L130 PetriNetUnfolder]: 4760/6775 cut-off events. [2023-08-30 14:44:18,339 INFO L131 PetriNetUnfolder]: For 87/87 co-relation queries the response was YES. [2023-08-30 14:44:18,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13823 conditions, 6775 events. 4760/6775 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 34287 event pairs, 4157 based on Foata normal form. 3/2800 useless extension candidates. Maximal degree in co-relation 13809. Up to 6761 conditions per place. [2023-08-30 14:44:18,363 INFO L137 encePairwiseOnDemand]: 901/908 looper letters, 42 selfloop transitions, 18 changer transitions 0/60 dead transitions. [2023-08-30 14:44:18,363 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 60 transitions, 352 flow [2023-08-30 14:44:18,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 14:44:18,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 14:44:18,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2611 transitions. [2023-08-30 14:44:18,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107929515418502 [2023-08-30 14:44:18,369 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2611 transitions. [2023-08-30 14:44:18,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2611 transitions. [2023-08-30 14:44:18,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:44:18,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2611 transitions. [2023-08-30 14:44:18,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 373.0) internal successors, (2611), 7 states have internal predecessors, (2611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:18,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 908.0) internal successors, (7264), 8 states have internal predecessors, (7264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:18,379 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 908.0) internal successors, (7264), 8 states have internal predecessors, (7264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:18,379 INFO L175 Difference]: Start difference. First operand has 60 places, 57 transitions, 220 flow. Second operand 7 states and 2611 transitions. [2023-08-30 14:44:18,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 60 transitions, 352 flow [2023-08-30 14:44:18,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 60 transitions, 322 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 14:44:18,381 INFO L231 Difference]: Finished difference. Result has 62 places, 60 transitions, 252 flow [2023-08-30 14:44:18,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=908, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=252, PETRI_PLACES=62, PETRI_TRANSITIONS=60} [2023-08-30 14:44:18,382 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 0 predicate places. [2023-08-30 14:44:18,382 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 60 transitions, 252 flow [2023-08-30 14:44:18,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 365.6470588235294) internal successors, (6216), 17 states have internal predecessors, (6216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:18,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:44:18,384 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:44:18,409 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-30 14:44:18,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:44:18,589 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-08-30 14:44:18,589 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:44:18,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1756628230, now seen corresponding path program 1 times [2023-08-30 14:44:18,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:44:18,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482239563] [2023-08-30 14:44:18,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:44:18,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:44:18,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:44:18,653 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-30 14:44:18,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:44:18,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482239563] [2023-08-30 14:44:18,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482239563] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:44:18,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:44:18,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:44:18,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001959631] [2023-08-30 14:44:18,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:44:18,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:44:18,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:44:18,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:44:18,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:44:18,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 380 out of 908 [2023-08-30 14:44:18,666 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 60 transitions, 252 flow. Second operand has 3 states, 3 states have (on average 383.6666666666667) internal successors, (1151), 3 states have internal predecessors, (1151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:18,666 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:44:18,667 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 380 of 908 [2023-08-30 14:44:18,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:44:19,913 INFO L130 PetriNetUnfolder]: 8190/11655 cut-off events. [2023-08-30 14:44:19,914 INFO L131 PetriNetUnfolder]: For 82/82 co-relation queries the response was YES. [2023-08-30 14:44:19,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23741 conditions, 11655 events. 8190/11655 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 711. Compared 67114 event pairs, 4157 based on Foata normal form. 0/4801 useless extension candidates. Maximal degree in co-relation 23726. Up to 6776 conditions per place. [2023-08-30 14:44:19,969 INFO L137 encePairwiseOnDemand]: 904/908 looper letters, 92 selfloop transitions, 2 changer transitions 0/94 dead transitions. [2023-08-30 14:44:19,970 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 94 transitions, 513 flow [2023-08-30 14:44:19,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:44:19,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:44:19,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1221 transitions. [2023-08-30 14:44:19,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44823788546255505 [2023-08-30 14:44:19,973 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1221 transitions. [2023-08-30 14:44:19,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1221 transitions. [2023-08-30 14:44:19,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:44:19,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1221 transitions. [2023-08-30 14:44:19,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 407.0) internal successors, (1221), 3 states have internal predecessors, (1221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:19,979 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 908.0) internal successors, (3632), 4 states have internal predecessors, (3632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:19,980 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 908.0) internal successors, (3632), 4 states have internal predecessors, (3632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:19,980 INFO L175 Difference]: Start difference. First operand has 62 places, 60 transitions, 252 flow. Second operand 3 states and 1221 transitions. [2023-08-30 14:44:19,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 94 transitions, 513 flow [2023-08-30 14:44:19,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 94 transitions, 483 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-08-30 14:44:19,985 INFO L231 Difference]: Finished difference. Result has 61 places, 61 transitions, 236 flow [2023-08-30 14:44:19,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=908, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=236, PETRI_PLACES=61, PETRI_TRANSITIONS=61} [2023-08-30 14:44:19,987 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -1 predicate places. [2023-08-30 14:44:19,988 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 61 transitions, 236 flow [2023-08-30 14:44:19,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 383.6666666666667) internal successors, (1151), 3 states have internal predecessors, (1151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:19,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:44:19,988 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:44:19,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 14:44:19,988 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-08-30 14:44:19,989 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:44:19,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1756628297, now seen corresponding path program 3 times [2023-08-30 14:44:19,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:44:19,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748629861] [2023-08-30 14:44:19,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:44:19,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:44:20,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:44:20,821 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-08-30 14:44:20,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:44:20,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748629861] [2023-08-30 14:44:20,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748629861] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:44:20,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342452642] [2023-08-30 14:44:20,822 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 14:44:20,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:44:20,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:44:20,838 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) [2023-08-30 14:44:20,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 14:44:21,041 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-30 14:44:21,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 14:44:21,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 48 conjunts are in the unsatisfiable core [2023-08-30 14:44:21,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:44:21,106 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-30 14:44:21,143 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 14:44:21,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 14:44:21,182 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-08-30 14:44:21,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 14:44:21,227 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-08-30 14:44:21,269 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2023-08-30 14:44:21,270 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 24 [2023-08-30 14:44:21,335 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2023-08-30 14:44:21,335 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 28 [2023-08-30 14:44:21,387 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 14:44:21,387 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 14:44:21,414 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 14:44:21,423 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 14:44:21,435 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 14:44:21,450 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 14:44:21,461 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 14:44:21,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 14:44:21,485 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 14:44:21,497 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-08-30 14:44:21,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:44:21,577 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_443 (Array Int Int)) (v_ArrVal_442 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_442) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_443) c_~o_2~0.base) c_~o_2~0.offset) 9223372039002259456)) is different from false [2023-08-30 14:44:40,005 INFO L321 Elim1Store]: treesize reduction 212, result has 30.5 percent of original size [2023-08-30 14:44:40,005 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 53 treesize of output 106 [2023-08-30 14:44:40,063 INFO L321 Elim1Store]: treesize reduction 24, result has 70.4 percent of original size [2023-08-30 14:44:40,063 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 132 treesize of output 152 [2023-08-30 14:44:40,090 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 44 [2023-08-30 14:44:40,103 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2023-08-30 14:44:40,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-08-30 14:44:40,321 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 25 trivial. 5 not checked. [2023-08-30 14:44:40,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342452642] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:44:40,322 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:44:40,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2023-08-30 14:44:40,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807047146] [2023-08-30 14:44:40,322 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:44:40,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-30 14:44:40,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:44:40,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-30 14:44:40,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=773, Unknown=15, NotChecked=58, Total=992 [2023-08-30 14:44:40,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 908 [2023-08-30 14:44:40,555 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 61 transitions, 236 flow. Second operand has 32 states, 32 states have (on average 311.3125) internal successors, (9962), 32 states have internal predecessors, (9962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:40,556 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:44:40,556 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 908 [2023-08-30 14:44:40,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:45:11,047 WARN L222 SmtUtils]: Spent 30.32s on a formula simplification. DAG size of input: 42 DAG size of output: 40 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 14:45:29,339 WARN L222 SmtUtils]: Spent 18.27s on a formula simplification. DAG size of input: 45 DAG size of output: 43 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 14:45:39,558 WARN L222 SmtUtils]: Spent 10.20s on a formula simplification. DAG size of input: 45 DAG size of output: 43 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 14:45:55,892 WARN L222 SmtUtils]: Spent 16.32s on a formula simplification. DAG size of input: 49 DAG size of output: 44 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 14:45:57,760 INFO L130 PetriNetUnfolder]: 10269/15181 cut-off events. [2023-08-30 14:45:57,760 INFO L131 PetriNetUnfolder]: For 1062/1062 co-relation queries the response was YES. [2023-08-30 14:45:57,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32040 conditions, 15181 events. 10269/15181 cut-off events. For 1062/1062 co-relation queries the response was YES. Maximal size of possible extension queue 1087. Compared 97373 event pairs, 5647 based on Foata normal form. 0/6724 useless extension candidates. Maximal degree in co-relation 32024. Up to 10246 conditions per place. [2023-08-30 14:45:57,846 INFO L137 encePairwiseOnDemand]: 891/908 looper letters, 72 selfloop transitions, 29 changer transitions 0/101 dead transitions. [2023-08-30 14:45:57,846 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 101 transitions, 533 flow [2023-08-30 14:45:57,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-30 14:45:57,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-30 14:45:57,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 4745 transitions. [2023-08-30 14:45:57,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838472834067546 [2023-08-30 14:45:57,854 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 4745 transitions. [2023-08-30 14:45:57,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 4745 transitions. [2023-08-30 14:45:57,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:45:57,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 4745 transitions. [2023-08-30 14:45:57,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 316.3333333333333) internal successors, (4745), 15 states have internal predecessors, (4745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:45:57,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 908.0) internal successors, (14528), 16 states have internal predecessors, (14528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:45:57,874 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 908.0) internal successors, (14528), 16 states have internal predecessors, (14528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:45:57,874 INFO L175 Difference]: Start difference. First operand has 61 places, 61 transitions, 236 flow. Second operand 15 states and 4745 transitions. [2023-08-30 14:45:57,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 101 transitions, 533 flow [2023-08-30 14:45:57,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 101 transitions, 529 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:45:57,877 INFO L231 Difference]: Finished difference. Result has 77 places, 74 transitions, 358 flow [2023-08-30 14:45:57,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=908, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=358, PETRI_PLACES=77, PETRI_TRANSITIONS=74} [2023-08-30 14:45:57,878 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 15 predicate places. [2023-08-30 14:45:57,878 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 74 transitions, 358 flow [2023-08-30 14:45:57,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 311.3125) internal successors, (9962), 32 states have internal predecessors, (9962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:45:57,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:45:57,881 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:45:57,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 14:45:58,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:45:58,090 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-08-30 14:45:58,090 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:45:58,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1756628226, now seen corresponding path program 1 times [2023-08-30 14:45:58,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:45:58,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468863017] [2023-08-30 14:45:58,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:45:58,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:45:58,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:45:59,307 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 14:45:59,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:45:59,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468863017] [2023-08-30 14:45:59,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468863017] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:45:59,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029828911] [2023-08-30 14:45:59,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:45:59,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:45:59,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:45:59,309 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) [2023-08-30 14:45:59,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 14:45:59,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:45:59,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 52 conjunts are in the unsatisfiable core [2023-08-30 14:45:59,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:45:59,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 14:45:59,500 INFO L321 Elim1Store]: treesize reduction 56, result has 37.8 percent of original size [2023-08-30 14:45:59,501 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 39 [2023-08-30 14:45:59,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 14:45:59,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 14:45:59,565 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-08-30 14:45:59,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 14:45:59,603 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-08-30 14:45:59,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 14:45:59,643 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-08-30 14:45:59,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 14:45:59,700 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-08-30 14:45:59,746 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-30 14:45:59,747 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-08-30 14:45:59,793 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 14:45:59,808 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 14:45:59,818 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 14:45:59,831 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 14:45:59,841 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 14:45:59,888 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 14:45:59,889 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 14:45:59,922 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 14:45:59,932 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 14:45:59,942 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 14:45:59,956 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 14:45:59,964 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 14:46:00,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 14:46:00,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 14:46:00,062 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 14:46:00,064 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 14:46:00,064 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 12 [2023-08-30 14:46:00,085 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-30 14:46:00,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:46:00,164 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_569 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_569) c_~o_0~0.base) c_~o_0~0.offset)))) is different from false [2023-08-30 14:46:20,933 INFO L321 Elim1Store]: treesize reduction 244, result has 20.0 percent of original size [2023-08-30 14:46:20,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 58 treesize of output 79 [2023-08-30 14:46:20,948 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 14:46:20,948 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1107 treesize of output 1075 [2023-08-30 14:46:20,963 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 59 [2023-08-30 14:46:20,971 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 55 [2023-08-30 14:46:20,976 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 54 [2023-08-30 14:46:21,102 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 1 proven. 16 refuted. 3 times theorem prover too weak. 20 trivial. 5 not checked. [2023-08-30 14:46:21,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029828911] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:46:21,102 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:46:21,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 38 [2023-08-30 14:46:21,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474525417] [2023-08-30 14:46:21,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:46:21,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-08-30 14:46:21,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:46:21,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-08-30 14:46:21,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1278, Unknown=23, NotChecked=74, Total=1560 [2023-08-30 14:46:21,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 908 [2023-08-30 14:46:21,307 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 74 transitions, 358 flow. Second operand has 40 states, 40 states have (on average 310.25) internal successors, (12410), 40 states have internal predecessors, (12410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:46:21,307 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:46:21,307 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 908 [2023-08-30 14:46:21,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:46:24,116 INFO L130 PetriNetUnfolder]: 12522/18486 cut-off events. [2023-08-30 14:46:24,116 INFO L131 PetriNetUnfolder]: For 5381/5381 co-relation queries the response was YES. [2023-08-30 14:46:24,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42106 conditions, 18486 events. 12522/18486 cut-off events. For 5381/5381 co-relation queries the response was YES. Maximal size of possible extension queue 1388. Compared 118947 event pairs, 9557 based on Foata normal form. 0/8939 useless extension candidates. Maximal degree in co-relation 42086. Up to 13151 conditions per place. [2023-08-30 14:46:24,182 INFO L137 encePairwiseOnDemand]: 896/908 looper letters, 110 selfloop transitions, 21 changer transitions 0/131 dead transitions. [2023-08-30 14:46:24,182 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 131 transitions, 769 flow [2023-08-30 14:46:24,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-30 14:46:24,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-30 14:46:24,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 4755 transitions. [2023-08-30 14:46:24,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3491189427312775 [2023-08-30 14:46:24,189 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 4755 transitions. [2023-08-30 14:46:24,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 4755 transitions. [2023-08-30 14:46:24,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:46:24,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 4755 transitions. [2023-08-30 14:46:24,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 317.0) internal successors, (4755), 15 states have internal predecessors, (4755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:46:24,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 908.0) internal successors, (14528), 16 states have internal predecessors, (14528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:46:24,210 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 908.0) internal successors, (14528), 16 states have internal predecessors, (14528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:46:24,210 INFO L175 Difference]: Start difference. First operand has 77 places, 74 transitions, 358 flow. Second operand 15 states and 4755 transitions. [2023-08-30 14:46:24,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 131 transitions, 769 flow [2023-08-30 14:46:24,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 131 transitions, 720 flow, removed 6 selfloop flow, removed 7 redundant places. [2023-08-30 14:46:24,215 INFO L231 Difference]: Finished difference. Result has 87 places, 78 transitions, 388 flow [2023-08-30 14:46:24,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=908, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=388, PETRI_PLACES=87, PETRI_TRANSITIONS=78} [2023-08-30 14:46:24,216 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 25 predicate places. [2023-08-30 14:46:24,216 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 78 transitions, 388 flow [2023-08-30 14:46:24,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 310.25) internal successors, (12410), 40 states have internal predecessors, (12410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:46:24,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:46:24,219 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:46:24,227 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 14:46:24,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:46:24,425 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-08-30 14:46:24,425 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:46:24,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1756628228, now seen corresponding path program 1 times [2023-08-30 14:46:24,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:46:24,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973480139] [2023-08-30 14:46:24,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:46:24,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:46:24,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:46:25,025 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-08-30 14:46:25,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:46:25,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973480139] [2023-08-30 14:46:25,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973480139] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:46:25,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269583149] [2023-08-30 14:46:25,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:46:25,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:46:25,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:46:25,027 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) [2023-08-30 14:46:25,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 14:46:25,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:46:25,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 43 conjunts are in the unsatisfiable core [2023-08-30 14:46:25,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:46:25,183 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-30 14:46:25,208 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 14:46:25,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 14:46:25,241 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-08-30 14:46:25,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 14:46:25,274 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-08-30 14:46:25,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 14:46:25,305 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-08-30 14:46:25,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 14:46:25,341 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-08-30 14:46:25,369 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 14:46:25,369 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 14:46:25,395 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 14:46:25,406 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 14:46:25,415 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 14:46:25,424 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 14:46:25,433 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 14:46:25,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 14:46:25,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 14:46:25,468 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-08-30 14:46:25,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:46:44,006 INFO L321 Elim1Store]: treesize reduction 244, result has 20.0 percent of original size [2023-08-30 14:46:44,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 55 treesize of output 76 [2023-08-30 14:46:44,015 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 14:46:44,016 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 69 [2023-08-30 14:46:44,020 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 26 [2023-08-30 14:46:44,023 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 50 [2023-08-30 14:46:44,132 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-08-30 14:46:44,159 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-08-30 14:46:44,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269583149] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:46:44,160 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:46:44,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2023-08-30 14:46:44,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052634804] [2023-08-30 14:46:44,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:46:44,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-30 14:46:44,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:46:44,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-30 14:46:44,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=806, Unknown=18, NotChecked=0, Total=992 [2023-08-30 14:46:46,268 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 14:46:48,292 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 14:46:50,379 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 14:46:52,860 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 14:46:55,075 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 14:46:57,153 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 14:46:59,190 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 14:47:01,258 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 14:47:03,325 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 14:47:05,682 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 14:47:05,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 908 [2023-08-30 14:47:05,687 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 78 transitions, 388 flow. Second operand has 32 states, 32 states have (on average 320.3125) internal successors, (10250), 32 states have internal predecessors, (10250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:47:05,687 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:47:05,687 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 908 [2023-08-30 14:47:05,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:47:08,270 INFO L130 PetriNetUnfolder]: 13271/19744 cut-off events. [2023-08-30 14:47:08,270 INFO L131 PetriNetUnfolder]: For 12916/12916 co-relation queries the response was YES. [2023-08-30 14:47:08,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46859 conditions, 19744 events. 13271/19744 cut-off events. For 12916/12916 co-relation queries the response was YES. Maximal size of possible extension queue 1533. Compared 133297 event pairs, 7358 based on Foata normal form. 0/10751 useless extension candidates. Maximal degree in co-relation 46839. Up to 13587 conditions per place. [2023-08-30 14:47:08,345 INFO L137 encePairwiseOnDemand]: 892/908 looper letters, 70 selfloop transitions, 37 changer transitions 0/107 dead transitions. [2023-08-30 14:47:08,346 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 107 transitions, 683 flow [2023-08-30 14:47:08,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-30 14:47:08,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-30 14:47:08,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 5200 transitions. [2023-08-30 14:47:08,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3579295154185022 [2023-08-30 14:47:08,353 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 5200 transitions. [2023-08-30 14:47:08,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 5200 transitions. [2023-08-30 14:47:08,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:47:08,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 5200 transitions. [2023-08-30 14:47:08,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 325.0) internal successors, (5200), 16 states have internal predecessors, (5200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:47:08,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 908.0) internal successors, (15436), 17 states have internal predecessors, (15436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:47:08,397 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 908.0) internal successors, (15436), 17 states have internal predecessors, (15436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:47:08,397 INFO L175 Difference]: Start difference. First operand has 87 places, 78 transitions, 388 flow. Second operand 16 states and 5200 transitions. [2023-08-30 14:47:08,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 107 transitions, 683 flow [2023-08-30 14:47:08,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 107 transitions, 673 flow, removed 5 selfloop flow, removed 0 redundant places. [2023-08-30 14:47:08,409 INFO L231 Difference]: Finished difference. Result has 103 places, 82 transitions, 488 flow [2023-08-30 14:47:08,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=908, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=488, PETRI_PLACES=103, PETRI_TRANSITIONS=82} [2023-08-30 14:47:08,410 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 41 predicate places. [2023-08-30 14:47:08,410 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 82 transitions, 488 flow [2023-08-30 14:47:08,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 320.3125) internal successors, (10250), 32 states have internal predecessors, (10250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:47:08,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:47:08,411 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:47:08,417 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-30 14:47:08,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:47:08,617 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-08-30 14:47:08,617 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:47:08,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1756628227, now seen corresponding path program 1 times [2023-08-30 14:47:08,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:47:08,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724635644] [2023-08-30 14:47:08,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:47:08,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:47:08,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:47:09,762 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-30 14:47:09,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:47:09,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724635644] [2023-08-30 14:47:09,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724635644] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:47:09,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398077170] [2023-08-30 14:47:09,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:47:09,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:47:09,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:47:09,764 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) [2023-08-30 14:47:09,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 14:47:09,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:47:09,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 73 conjunts are in the unsatisfiable core [2023-08-30 14:47:09,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:47:09,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 14:47:09,945 INFO L321 Elim1Store]: treesize reduction 56, result has 37.8 percent of original size [2023-08-30 14:47:09,946 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 39 [2023-08-30 14:47:09,976 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 14:47:10,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-30 14:47:10,044 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-30 14:47:10,083 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-30 14:47:10,124 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-30 14:47:10,160 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-30 14:47:10,160 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-08-30 14:47:10,206 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 14:47:10,242 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 14:47:10,285 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 14:47:10,321 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 14:47:10,352 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 14:47:10,392 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 14:47:10,392 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 14:47:10,433 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 14:47:10,451 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 14:47:10,462 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 14:47:10,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 14:47:10,484 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 14:47:10,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 14:47:10,515 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 14:47:10,598 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 14:47:10,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:47:10,914 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_812 (Array Int Int)) (~o_2~0.base Int)) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_812))) (let ((.cse0 (select (select .cse1 ~o_2~0.base) c_~o_2~0.offset))) (or (< 9223372039002259455 .cse0) (< (select (select .cse1 c_~o_0~0.base) c_~o_0~0.offset) (+ .cse0 2147483648)) (<= .cse0 0))))) (forall ((v_ArrVal_812 (Array Int Int)) (~o_2~0.base Int)) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_812))) (let ((.cse2 (select (select .cse3 ~o_2~0.base) c_~o_2~0.offset))) (or (< .cse2 0) (< (select (select .cse3 c_~o_0~0.base) c_~o_0~0.offset) (+ .cse2 2147483648)) (< 0 .cse2)))))) is different from false [2023-08-30 14:47:42,912 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 14:47:42,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 10 case distinctions, treesize of input 511 treesize of output 297 [2023-08-30 14:47:42,974 INFO L321 Elim1Store]: treesize reduction 12, result has 62.5 percent of original size [2023-08-30 14:47:42,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 80941 treesize of output 78885 [2023-08-30 14:47:43,301 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 14:47:43,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1519 treesize of output 1492 [2023-08-30 14:47:43,344 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 14:47:43,344 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1483 treesize of output 1420 [2023-08-30 14:47:43,385 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 14:47:43,385 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1411 treesize of output 1276 [2023-08-30 14:47:43,451 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 14:47:43,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 11684 treesize of output 11438 [2023-08-30 14:47:43,766 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 14:47:43,767 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 2627 treesize of output 2564 [2023-08-30 14:47:43,845 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 14:47:43,846 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 2555 treesize of output 2528 [2023-08-30 14:47:43,923 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 14:47:43,924 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 2519 treesize of output 2384 Killed by 15