./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_10-ptrmunge_racefree.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --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/goblint-regression/28-race_reach_10-ptrmunge_racefree.i -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 337bc30baab893db6c1e898eac989d238a0e57740b5469c94ed68dbaffc92f80 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 10:02:04,058 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 10:02:04,060 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 10:02:04,104 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 10:02:04,106 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 10:02:04,109 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 10:02:04,111 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 10:02:04,114 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 10:02:04,116 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 10:02:04,120 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 10:02:04,121 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 10:02:04,123 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 10:02:04,123 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 10:02:04,125 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 10:02:04,126 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 10:02:04,131 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 10:02:04,132 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 10:02:04,133 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 10:02:04,135 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 10:02:04,140 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 10:02:04,141 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 10:02:04,142 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 10:02:04,142 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 10:02:04,143 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 10:02:04,149 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 10:02:04,150 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 10:02:04,150 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 10:02:04,152 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 10:02:04,152 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 10:02:04,153 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 10:02:04,153 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 10:02:04,158 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 10:02:04,159 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 10:02:04,161 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 10:02:04,161 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 10:02:04,162 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 10:02:04,162 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 10:02:04,162 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 10:02:04,163 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 10:02:04,175 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 10:02:04,175 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 10:02:04,177 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 10:02:04,210 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 10:02:04,210 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 10:02:04,211 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 10:02:04,211 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 10:02:04,212 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 10:02:04,212 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 10:02:04,213 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 10:02:04,213 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 10:02:04,213 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 10:02:04,213 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 10:02:04,214 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 10:02:04,214 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 10:02:04,214 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 10:02:04,214 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 10:02:04,215 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 10:02:04,215 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 10:02:04,215 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 10:02:04,215 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 10:02:04,215 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 10:02:04,215 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 10:02:04,216 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 10:02:04,216 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 10:02:04,216 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 10:02:04,216 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 10:02:04,216 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 10:02:04,217 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 10:02:04,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 10:02:04,217 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 10:02:04,217 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 10:02:04,217 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 10:02:04,217 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 10:02:04,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 10:02:04,218 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 10:02:04,218 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 10:02:04,218 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 10:02:04,218 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 10:02:04,218 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 10:02:04,218 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 337bc30baab893db6c1e898eac989d238a0e57740b5469c94ed68dbaffc92f80 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 10:02:04,495 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 10:02:04,520 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 10:02:04,523 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 10:02:04,524 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 10:02:04,525 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 10:02:04,526 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_10-ptrmunge_racefree.i [2023-08-30 10:02:05,712 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 10:02:05,975 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 10:02:05,976 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_10-ptrmunge_racefree.i [2023-08-30 10:02:05,990 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc2522dfc/eddd09be502843aea379940895fea208/FLAGd239e70d2 [2023-08-30 10:02:06,002 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc2522dfc/eddd09be502843aea379940895fea208 [2023-08-30 10:02:06,004 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 10:02:06,006 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 10:02:06,007 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 10:02:06,007 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 10:02:06,009 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 10:02:06,010 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:02:06" (1/1) ... [2023-08-30 10:02:06,011 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12f9ef0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:02:06, skipping insertion in model container [2023-08-30 10:02:06,011 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:02:06" (1/1) ... [2023-08-30 10:02:06,016 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 10:02:06,042 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 10:02:06,327 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_10-ptrmunge_racefree.i[30176,30189] [2023-08-30 10:02:06,357 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 10:02:06,371 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 10:02:06,412 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_10-ptrmunge_racefree.i[30176,30189] [2023-08-30 10:02:06,432 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 10:02:06,471 INFO L208 MainTranslator]: Completed translation [2023-08-30 10:02:06,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:02:06 WrapperNode [2023-08-30 10:02:06,472 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 10:02:06,473 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 10:02:06,473 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 10:02:06,474 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 10:02:06,479 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:02:06" (1/1) ... [2023-08-30 10:02:06,497 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:02:06" (1/1) ... [2023-08-30 10:02:06,527 INFO L138 Inliner]: procedures = 172, calls = 52, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 236 [2023-08-30 10:02:06,528 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 10:02:06,528 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 10:02:06,529 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 10:02:06,529 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 10:02:06,536 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:02:06" (1/1) ... [2023-08-30 10:02:06,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:02:06" (1/1) ... [2023-08-30 10:02:06,540 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:02:06" (1/1) ... [2023-08-30 10:02:06,540 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:02:06" (1/1) ... [2023-08-30 10:02:06,547 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:02:06" (1/1) ... [2023-08-30 10:02:06,552 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:02:06" (1/1) ... [2023-08-30 10:02:06,570 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:02:06" (1/1) ... [2023-08-30 10:02:06,572 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:02:06" (1/1) ... [2023-08-30 10:02:06,575 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 10:02:06,576 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 10:02:06,576 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 10:02:06,576 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 10:02:06,577 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:02:06" (1/1) ... [2023-08-30 10:02:06,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 10:02:06,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:02:06,617 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 10:02:06,619 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 10:02:06,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 10:02:06,641 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-30 10:02:06,644 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-30 10:02:06,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 10:02:06,644 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 10:02:06,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 10:02:06,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 10:02:06,645 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-30 10:02:06,645 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-30 10:02:06,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 10:02:06,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 10:02:06,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 10:02:06,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 10:02:06,646 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 10:02:06,843 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 10:02:06,858 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 10:02:07,226 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 10:02:07,234 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 10:02:07,234 INFO L302 CfgBuilder]: Removed 24 assume(true) statements. [2023-08-30 10:02:07,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:02:07 BoogieIcfgContainer [2023-08-30 10:02:07,236 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 10:02:07,238 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 10:02:07,238 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 10:02:07,241 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 10:02:07,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 10:02:06" (1/3) ... [2023-08-30 10:02:07,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d3645c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:02:07, skipping insertion in model container [2023-08-30 10:02:07,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:02:06" (2/3) ... [2023-08-30 10:02:07,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d3645c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:02:07, skipping insertion in model container [2023-08-30 10:02:07,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:02:07" (3/3) ... [2023-08-30 10:02:07,244 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_10-ptrmunge_racefree.i [2023-08-30 10:02:07,250 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 10:02:07,259 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 10:02:07,259 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-08-30 10:02:07,259 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 10:02:07,382 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-30 10:02:07,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 220 places, 247 transitions, 516 flow [2023-08-30 10:02:07,599 INFO L130 PetriNetUnfolder]: 58/439 cut-off events. [2023-08-30 10:02:07,600 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-30 10:02:07,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 459 conditions, 439 events. 58/439 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1913 event pairs, 0 based on Foata normal form. 0/345 useless extension candidates. Maximal degree in co-relation 233. Up to 8 conditions per place. [2023-08-30 10:02:07,612 INFO L82 GeneralOperation]: Start removeDead. Operand has 220 places, 247 transitions, 516 flow [2023-08-30 10:02:07,624 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 220 places, 247 transitions, 516 flow [2023-08-30 10:02:07,631 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:02:07,640 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 220 places, 247 transitions, 516 flow [2023-08-30 10:02:07,642 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 220 places, 247 transitions, 516 flow [2023-08-30 10:02:07,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 220 places, 247 transitions, 516 flow [2023-08-30 10:02:07,700 INFO L130 PetriNetUnfolder]: 58/439 cut-off events. [2023-08-30 10:02:07,701 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-30 10:02:07,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 459 conditions, 439 events. 58/439 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1913 event pairs, 0 based on Foata normal form. 0/345 useless extension candidates. Maximal degree in co-relation 233. Up to 8 conditions per place. [2023-08-30 10:02:07,721 INFO L119 LiptonReduction]: Number of co-enabled transitions 25704 [2023-08-30 10:02:12,349 INFO L134 LiptonReduction]: Checked pairs total: 44449 [2023-08-30 10:02:12,349 INFO L136 LiptonReduction]: Total number of compositions: 205 [2023-08-30 10:02:12,360 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 10:02:12,365 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;@172b2baf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:02:12,365 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2023-08-30 10:02:12,368 INFO L130 PetriNetUnfolder]: 0/6 cut-off events. [2023-08-30 10:02:12,368 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:02:12,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:02:12,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 10:02:12,369 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t1_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t1_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:02:12,373 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:02:12,373 INFO L85 PathProgramCache]: Analyzing trace with hash 30483089, now seen corresponding path program 1 times [2023-08-30 10:02:12,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:02:12,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198875400] [2023-08-30 10:02:12,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:02:12,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:02:12,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:02:12,618 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 10:02:12,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:02:12,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198875400] [2023-08-30 10:02:12,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198875400] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:02:12,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:02:12,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:02:12,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977149360] [2023-08-30 10:02:12,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:02:12,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:02:12,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:02:12,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:02:12,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:02:12,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 452 [2023-08-30 10:02:12,666 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 93 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 210.33333333333334) internal successors, (631), 3 states have internal predecessors, (631), 0 states have call successors, (0), 0 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 10:02:12,666 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:02:12,666 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 452 [2023-08-30 10:02:12,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:02:13,757 INFO L130 PetriNetUnfolder]: 6865/11505 cut-off events. [2023-08-30 10:02:13,758 INFO L131 PetriNetUnfolder]: For 142/142 co-relation queries the response was YES. [2023-08-30 10:02:13,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22282 conditions, 11505 events. 6865/11505 cut-off events. For 142/142 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 79394 event pairs, 3094 based on Foata normal form. 1392/8932 useless extension candidates. Maximal degree in co-relation 21309. Up to 10578 conditions per place. [2023-08-30 10:02:13,827 INFO L137 encePairwiseOnDemand]: 427/452 looper letters, 77 selfloop transitions, 2 changer transitions 0/90 dead transitions. [2023-08-30 10:02:13,827 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 90 transitions, 360 flow [2023-08-30 10:02:13,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:02:13,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:02:13,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 739 transitions. [2023-08-30 10:02:13,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5449852507374632 [2023-08-30 10:02:13,847 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 739 transitions. [2023-08-30 10:02:13,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 739 transitions. [2023-08-30 10:02:13,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:02:13,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 739 transitions. [2023-08-30 10:02:13,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 246.33333333333334) internal successors, (739), 3 states have internal predecessors, (739), 0 states have call successors, (0), 0 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 10:02:13,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 452.0) internal successors, (1808), 4 states have internal predecessors, (1808), 0 states have call successors, (0), 0 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 10:02:13,866 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 452.0) internal successors, (1808), 4 states have internal predecessors, (1808), 0 states have call successors, (0), 0 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 10:02:13,868 INFO L175 Difference]: Start difference. First operand has 72 places, 93 transitions, 208 flow. Second operand 3 states and 739 transitions. [2023-08-30 10:02:13,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 90 transitions, 360 flow [2023-08-30 10:02:13,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 90 transitions, 360 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:02:13,876 INFO L231 Difference]: Finished difference. Result has 73 places, 71 transitions, 172 flow [2023-08-30 10:02:13,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=452, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=172, PETRI_PLACES=73, PETRI_TRANSITIONS=71} [2023-08-30 10:02:13,880 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 1 predicate places. [2023-08-30 10:02:13,881 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 71 transitions, 172 flow [2023-08-30 10:02:13,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 210.33333333333334) internal successors, (631), 3 states have internal predecessors, (631), 0 states have call successors, (0), 0 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 10:02:13,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:02:13,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:02:13,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 10:02:13,882 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t1_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t1_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:02:13,883 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:02:13,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1677837123, now seen corresponding path program 1 times [2023-08-30 10:02:13,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:02:13,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375332161] [2023-08-30 10:02:13,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:02:13,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:02:13,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:02:14,131 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 10:02:14,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:02:14,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375332161] [2023-08-30 10:02:14,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375332161] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:02:14,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:02:14,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:02:14,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177046125] [2023-08-30 10:02:14,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:02:14,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:02:14,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:02:14,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:02:14,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:02:14,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 452 [2023-08-30 10:02:14,307 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 71 transitions, 172 flow. Second operand has 5 states, 5 states have (on average 201.4) internal successors, (1007), 5 states have internal predecessors, (1007), 0 states have call successors, (0), 0 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 10:02:14,307 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:02:14,307 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 452 [2023-08-30 10:02:14,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:02:15,309 INFO L130 PetriNetUnfolder]: 7058/11474 cut-off events. [2023-08-30 10:02:15,309 INFO L131 PetriNetUnfolder]: For 170/170 co-relation queries the response was YES. [2023-08-30 10:02:15,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22415 conditions, 11474 events. 7058/11474 cut-off events. For 170/170 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 77107 event pairs, 4964 based on Foata normal form. 0/7447 useless extension candidates. Maximal degree in co-relation 22291. Up to 10521 conditions per place. [2023-08-30 10:02:15,380 INFO L137 encePairwiseOnDemand]: 444/452 looper letters, 93 selfloop transitions, 11 changer transitions 10/125 dead transitions. [2023-08-30 10:02:15,380 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 125 transitions, 524 flow [2023-08-30 10:02:15,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 10:02:15,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 10:02:15,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1318 transitions. [2023-08-30 10:02:15,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4859882005899705 [2023-08-30 10:02:15,385 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1318 transitions. [2023-08-30 10:02:15,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1318 transitions. [2023-08-30 10:02:15,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:02:15,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1318 transitions. [2023-08-30 10:02:15,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 219.66666666666666) internal successors, (1318), 6 states have internal predecessors, (1318), 0 states have call successors, (0), 0 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 10:02:15,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 452.0) internal successors, (3164), 7 states have internal predecessors, (3164), 0 states have call successors, (0), 0 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 10:02:15,396 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 452.0) internal successors, (3164), 7 states have internal predecessors, (3164), 0 states have call successors, (0), 0 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 10:02:15,396 INFO L175 Difference]: Start difference. First operand has 73 places, 71 transitions, 172 flow. Second operand 6 states and 1318 transitions. [2023-08-30 10:02:15,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 125 transitions, 524 flow [2023-08-30 10:02:15,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 125 transitions, 516 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:02:15,401 INFO L231 Difference]: Finished difference. Result has 78 places, 81 transitions, 236 flow [2023-08-30 10:02:15,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=452, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=236, PETRI_PLACES=78, PETRI_TRANSITIONS=81} [2023-08-30 10:02:15,402 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 6 predicate places. [2023-08-30 10:02:15,402 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 81 transitions, 236 flow [2023-08-30 10:02:15,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 201.4) internal successors, (1007), 5 states have internal predecessors, (1007), 0 states have call successors, (0), 0 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 10:02:15,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:02:15,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:02:15,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 10:02:15,404 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t1_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t1_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:02:15,405 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:02:15,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1667771189, now seen corresponding path program 1 times [2023-08-30 10:02:15,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:02:15,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621144115] [2023-08-30 10:02:15,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:02:15,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:02:15,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:02:15,501 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 10:02:15,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:02:15,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621144115] [2023-08-30 10:02:15,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621144115] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:02:15,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775865849] [2023-08-30 10:02:15,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:02:15,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:02:15,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:02:15,505 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 10:02:15,511 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 10:02:15,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:02:15,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 10:02:15,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:02:15,621 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 10:02:15,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:02:15,637 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 10:02:15,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775865849] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:02:15,638 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:02:15,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 10:02:15,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647530295] [2023-08-30 10:02:15,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:02:15,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:02:15,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:02:15,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:02:15,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:02:15,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 452 [2023-08-30 10:02:15,657 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 81 transitions, 236 flow. Second operand has 7 states, 7 states have (on average 210.42857142857142) internal successors, (1473), 7 states have internal predecessors, (1473), 0 states have call successors, (0), 0 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 10:02:15,657 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:02:15,657 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 452 [2023-08-30 10:02:15,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:02:15,720 INFO L130 PetriNetUnfolder]: 34/112 cut-off events. [2023-08-30 10:02:15,720 INFO L131 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2023-08-30 10:02:15,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 287 conditions, 112 events. 34/112 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 355 event pairs, 13 based on Foata normal form. 18/119 useless extension candidates. Maximal degree in co-relation 279. Up to 80 conditions per place. [2023-08-30 10:02:15,721 INFO L137 encePairwiseOnDemand]: 449/452 looper letters, 25 selfloop transitions, 2 changer transitions 16/45 dead transitions. [2023-08-30 10:02:15,721 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 45 transitions, 210 flow [2023-08-30 10:02:15,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 10:02:15,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 10:02:15,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 872 transitions. [2023-08-30 10:02:15,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4823008849557522 [2023-08-30 10:02:15,724 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 872 transitions. [2023-08-30 10:02:15,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 872 transitions. [2023-08-30 10:02:15,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:02:15,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 872 transitions. [2023-08-30 10:02:15,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 218.0) internal successors, (872), 4 states have internal predecessors, (872), 0 states have call successors, (0), 0 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 10:02:15,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 452.0) internal successors, (2260), 5 states have internal predecessors, (2260), 0 states have call successors, (0), 0 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 10:02:15,746 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 452.0) internal successors, (2260), 5 states have internal predecessors, (2260), 0 states have call successors, (0), 0 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 10:02:15,746 INFO L175 Difference]: Start difference. First operand has 78 places, 81 transitions, 236 flow. Second operand 4 states and 872 transitions. [2023-08-30 10:02:15,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 45 transitions, 210 flow [2023-08-30 10:02:15,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 45 transitions, 200 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-30 10:02:15,749 INFO L231 Difference]: Finished difference. Result has 35 places, 19 transitions, 63 flow [2023-08-30 10:02:15,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=452, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=63, PETRI_PLACES=35, PETRI_TRANSITIONS=19} [2023-08-30 10:02:15,750 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -37 predicate places. [2023-08-30 10:02:15,751 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 19 transitions, 63 flow [2023-08-30 10:02:15,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 210.42857142857142) internal successors, (1473), 7 states have internal predecessors, (1473), 0 states have call successors, (0), 0 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 10:02:15,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:02:15,752 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:02:15,760 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 10:02:15,957 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 10:02:15,957 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t1_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t1_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:02:15,958 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:02:15,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1546426133, now seen corresponding path program 1 times [2023-08-30 10:02:15,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:02:15,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806089859] [2023-08-30 10:02:15,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:02:15,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:02:15,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:02:16,157 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 10:02:16,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:02:16,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806089859] [2023-08-30 10:02:16,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806089859] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:02:16,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416668100] [2023-08-30 10:02:16,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:02:16,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:02:16,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:02:16,165 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 10:02:16,174 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 10:02:16,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:02:16,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-30 10:02:16,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:02:16,382 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:02:16,383 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 10:02:16,450 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 10:02:16,544 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 10:02:16,572 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 10:02:16,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:02:16,638 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 10:02:16,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416668100] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:02:16,639 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:02:16,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2023-08-30 10:02:16,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560738179] [2023-08-30 10:02:16,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:02:16,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-30 10:02:16,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:02:16,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-30 10:02:16,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=79, Unknown=1, NotChecked=0, Total=110 [2023-08-30 10:02:17,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 452 [2023-08-30 10:02:17,044 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 19 transitions, 63 flow. Second operand has 11 states, 11 states have (on average 200.45454545454547) internal successors, (2205), 11 states have internal predecessors, (2205), 0 states have call successors, (0), 0 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 10:02:17,044 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:02:17,044 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 452 [2023-08-30 10:02:17,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:02:17,143 INFO L130 PetriNetUnfolder]: 17/62 cut-off events. [2023-08-30 10:02:17,143 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2023-08-30 10:02:17,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 62 events. 17/62 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 138 event pairs, 3 based on Foata normal form. 1/59 useless extension candidates. Maximal degree in co-relation 156. Up to 23 conditions per place. [2023-08-30 10:02:17,144 INFO L137 encePairwiseOnDemand]: 445/452 looper letters, 14 selfloop transitions, 6 changer transitions 0/22 dead transitions. [2023-08-30 10:02:17,144 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 22 transitions, 115 flow [2023-08-30 10:02:17,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:02:17,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:02:17,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1011 transitions. [2023-08-30 10:02:17,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44734513274336285 [2023-08-30 10:02:17,147 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1011 transitions. [2023-08-30 10:02:17,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1011 transitions. [2023-08-30 10:02:17,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:02:17,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1011 transitions. [2023-08-30 10:02:17,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 202.2) internal successors, (1011), 5 states have internal predecessors, (1011), 0 states have call successors, (0), 0 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 10:02:17,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 452.0) internal successors, (2712), 6 states have internal predecessors, (2712), 0 states have call successors, (0), 0 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 10:02:17,157 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 452.0) internal successors, (2712), 6 states have internal predecessors, (2712), 0 states have call successors, (0), 0 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 10:02:17,157 INFO L175 Difference]: Start difference. First operand has 35 places, 19 transitions, 63 flow. Second operand 5 states and 1011 transitions. [2023-08-30 10:02:17,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 22 transitions, 115 flow [2023-08-30 10:02:17,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 22 transitions, 109 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:02:17,160 INFO L231 Difference]: Finished difference. Result has 28 places, 18 transitions, 72 flow [2023-08-30 10:02:17,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=452, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=72, PETRI_PLACES=28, PETRI_TRANSITIONS=18} [2023-08-30 10:02:17,161 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -44 predicate places. [2023-08-30 10:02:17,162 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 18 transitions, 72 flow [2023-08-30 10:02:17,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 200.45454545454547) internal successors, (2205), 11 states have internal predecessors, (2205), 0 states have call successors, (0), 0 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 10:02:17,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:02:17,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:02:17,169 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 10:02:17,369 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 10:02:17,370 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t1_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t1_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:02:17,370 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:02:17,370 INFO L85 PathProgramCache]: Analyzing trace with hash -963802196, now seen corresponding path program 1 times [2023-08-30 10:02:17,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:02:17,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545927122] [2023-08-30 10:02:17,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:02:17,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:02:17,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:02:17,463 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 10:02:17,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:02:17,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545927122] [2023-08-30 10:02:17,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545927122] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:02:17,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:02:17,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:02:17,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748108645] [2023-08-30 10:02:17,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:02:17,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 10:02:17,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:02:17,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 10:02:17,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 10:02:17,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 452 [2023-08-30 10:02:17,559 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 18 transitions, 72 flow. Second operand has 4 states, 4 states have (on average 202.75) internal successors, (811), 4 states have internal predecessors, (811), 0 states have call successors, (0), 0 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 10:02:17,560 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:02:17,560 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 452 [2023-08-30 10:02:17,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:02:17,599 INFO L130 PetriNetUnfolder]: 15/66 cut-off events. [2023-08-30 10:02:17,600 INFO L131 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2023-08-30 10:02:17,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 66 events. 15/66 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 170 event pairs, 5 based on Foata normal form. 3/68 useless extension candidates. Maximal degree in co-relation 181. Up to 30 conditions per place. [2023-08-30 10:02:17,600 INFO L137 encePairwiseOnDemand]: 447/452 looper letters, 16 selfloop transitions, 8 changer transitions 0/26 dead transitions. [2023-08-30 10:02:17,600 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 26 transitions, 151 flow [2023-08-30 10:02:17,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:02:17,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:02:17,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1022 transitions. [2023-08-30 10:02:17,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.452212389380531 [2023-08-30 10:02:17,604 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1022 transitions. [2023-08-30 10:02:17,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1022 transitions. [2023-08-30 10:02:17,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:02:17,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1022 transitions. [2023-08-30 10:02:17,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 204.4) internal successors, (1022), 5 states have internal predecessors, (1022), 0 states have call successors, (0), 0 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 10:02:17,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 452.0) internal successors, (2712), 6 states have internal predecessors, (2712), 0 states have call successors, (0), 0 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 10:02:17,611 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 452.0) internal successors, (2712), 6 states have internal predecessors, (2712), 0 states have call successors, (0), 0 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 10:02:17,611 INFO L175 Difference]: Start difference. First operand has 28 places, 18 transitions, 72 flow. Second operand 5 states and 1022 transitions. [2023-08-30 10:02:17,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 26 transitions, 151 flow [2023-08-30 10:02:17,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 26 transitions, 136 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-30 10:02:17,612 INFO L231 Difference]: Finished difference. Result has 32 places, 22 transitions, 116 flow [2023-08-30 10:02:17,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=452, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=116, PETRI_PLACES=32, PETRI_TRANSITIONS=22} [2023-08-30 10:02:17,613 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -40 predicate places. [2023-08-30 10:02:17,613 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 22 transitions, 116 flow [2023-08-30 10:02:17,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 202.75) internal successors, (811), 4 states have internal predecessors, (811), 0 states have call successors, (0), 0 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 10:02:17,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:02:17,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:02:17,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 10:02:17,615 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t1_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t1_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:02:17,615 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:02:17,615 INFO L85 PathProgramCache]: Analyzing trace with hash -963802232, now seen corresponding path program 1 times [2023-08-30 10:02:17,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:02:17,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608498423] [2023-08-30 10:02:17,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:02:17,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:02:17,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:02:17,789 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 10:02:17,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:02:17,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608498423] [2023-08-30 10:02:17,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608498423] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:02:17,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:02:17,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 10:02:17,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860431222] [2023-08-30 10:02:17,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:02:17,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:02:17,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:02:17,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:02:17,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:02:18,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 452 [2023-08-30 10:02:18,046 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 116 flow. Second operand has 7 states, 7 states have (on average 197.57142857142858) internal successors, (1383), 7 states have internal predecessors, (1383), 0 states have call successors, (0), 0 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 10:02:18,046 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:02:18,046 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 452 [2023-08-30 10:02:18,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:02:18,130 INFO L130 PetriNetUnfolder]: 13/63 cut-off events. [2023-08-30 10:02:18,130 INFO L131 PetriNetUnfolder]: For 55/55 co-relation queries the response was YES. [2023-08-30 10:02:18,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203 conditions, 63 events. 13/63 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 167 event pairs, 0 based on Foata normal form. 3/66 useless extension candidates. Maximal degree in co-relation 194. Up to 14 conditions per place. [2023-08-30 10:02:18,131 INFO L137 encePairwiseOnDemand]: 445/452 looper letters, 17 selfloop transitions, 8 changer transitions 2/29 dead transitions. [2023-08-30 10:02:18,131 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 29 transitions, 185 flow [2023-08-30 10:02:18,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 10:02:18,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 10:02:18,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1399 transitions. [2023-08-30 10:02:18,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44216182048040453 [2023-08-30 10:02:18,138 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1399 transitions. [2023-08-30 10:02:18,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1399 transitions. [2023-08-30 10:02:18,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:02:18,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1399 transitions. [2023-08-30 10:02:18,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 199.85714285714286) internal successors, (1399), 7 states have internal predecessors, (1399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 10:02:18,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 452.0) internal successors, (3616), 8 states have internal predecessors, (3616), 0 states have call successors, (0), 0 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 10:02:18,149 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 452.0) internal successors, (3616), 8 states have internal predecessors, (3616), 0 states have call successors, (0), 0 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 10:02:18,149 INFO L175 Difference]: Start difference. First operand has 32 places, 22 transitions, 116 flow. Second operand 7 states and 1399 transitions. [2023-08-30 10:02:18,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 29 transitions, 185 flow [2023-08-30 10:02:18,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 29 transitions, 174 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-30 10:02:18,153 INFO L231 Difference]: Finished difference. Result has 39 places, 20 transitions, 116 flow [2023-08-30 10:02:18,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=452, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=116, PETRI_PLACES=39, PETRI_TRANSITIONS=20} [2023-08-30 10:02:18,155 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -33 predicate places. [2023-08-30 10:02:18,155 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 20 transitions, 116 flow [2023-08-30 10:02:18,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 197.57142857142858) internal successors, (1383), 7 states have internal predecessors, (1383), 0 states have call successors, (0), 0 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 10:02:18,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:02:18,156 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:02:18,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 10:02:18,157 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t1_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t1_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:02:18,157 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:02:18,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1059944320, now seen corresponding path program 1 times [2023-08-30 10:02:18,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:02:18,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219624104] [2023-08-30 10:02:18,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:02:18,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:02:18,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:02:18,426 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 10:02:18,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:02:18,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219624104] [2023-08-30 10:02:18,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219624104] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:02:18,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331371902] [2023-08-30 10:02:18,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:02:18,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:02:18,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:02:18,429 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 10:02:18,432 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 10:02:18,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:02:18,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-30 10:02:18,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:02:18,531 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:02:18,531 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 10:02:18,569 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 10:02:18,700 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 0 case distinctions, treesize of input 28 treesize of output 16 [2023-08-30 10:02:18,754 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 10:02:18,782 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 10:02:18,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:02:18,813 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_114 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1_ids~0#1.base| v_ArrVal_114) |c_t1_funThread1of1ForFork0_munge_~v#1.base|) |c_t1_funThread1of1ForFork0_munge_~v#1.offset|) 2147483648))) is different from false [2023-08-30 10:02:18,836 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_112 Int) (v_ArrVal_114 (Array Int Int))) (or (< v_ArrVal_112 (+ |c_t1_funThread1of1ForFork0_munge_#t~post7#1| 1)) (< 0 (+ (select (select (store (store |c_#memory_int| |c_t1_funThread1of1ForFork0_munge_~v#1.base| (store (select |c_#memory_int| |c_t1_funThread1of1ForFork0_munge_~v#1.base|) |c_t1_funThread1of1ForFork0_munge_~v#1.offset| v_ArrVal_112)) |c_ULTIMATE.start_main_~#t1_ids~0#1.base| v_ArrVal_114) |c_t1_funThread1of1ForFork0_munge_~v#1.base|) |c_t1_funThread1of1ForFork0_munge_~v#1.offset|) 2147483648)))) is different from false [2023-08-30 10:02:18,850 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_112 Int) (v_ArrVal_114 (Array Int Int))) (let ((.cse0 (select |c_#memory_int| |c_t1_funThread1of1ForFork0_munge_~v#1.base|))) (or (< v_ArrVal_112 (+ (select .cse0 |c_t1_funThread1of1ForFork0_munge_~v#1.offset|) 1)) (< 0 (+ (select (select (store (store |c_#memory_int| |c_t1_funThread1of1ForFork0_munge_~v#1.base| (store .cse0 |c_t1_funThread1of1ForFork0_munge_~v#1.offset| v_ArrVal_112)) |c_ULTIMATE.start_main_~#t1_ids~0#1.base| v_ArrVal_114) |c_t1_funThread1of1ForFork0_munge_~v#1.base|) |c_t1_funThread1of1ForFork0_munge_~v#1.offset|) 2147483648))))) is different from false [2023-08-30 10:02:18,903 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_112 Int) (v_ArrVal_114 (Array Int Int))) (let ((.cse0 (select |c_#memory_int| |c_~#global1~0.base|))) (or (< 0 (+ (select (select (store (store |c_#memory_int| |c_~#global1~0.base| (store .cse0 |c_~#global1~0.offset| v_ArrVal_112)) |c_ULTIMATE.start_main_~#t1_ids~0#1.base| v_ArrVal_114) |c_~#global1~0.base|) |c_~#global1~0.offset|) 2147483648)) (< v_ArrVal_112 (+ (select .cse0 |c_~#global1~0.offset|) 1))))) is different from false [2023-08-30 10:02:18,966 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_112 Int) (v_ArrVal_111 (Array Int Int)) (v_ArrVal_114 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1_ids~0#1.base| v_ArrVal_111))) (let ((.cse1 (select .cse0 |c_~#global1~0.base|))) (or (< 0 (+ (select (select (store (store .cse0 |c_~#global1~0.base| (store .cse1 |c_~#global1~0.offset| v_ArrVal_112)) |c_ULTIMATE.start_main_~#t1_ids~0#1.base| v_ArrVal_114) |c_~#global1~0.base|) |c_~#global1~0.offset|) 2147483648)) (< v_ArrVal_112 (+ (select .cse1 |c_~#global1~0.offset|) 1)))))) is different from false [2023-08-30 10:02:18,968 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-30 10:02:18,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331371902] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:02:18,968 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:02:18,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 6] total 16 [2023-08-30 10:02:18,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324032836] [2023-08-30 10:02:18,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:02:18,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 10:02:18,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:02:18,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 10:02:18,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=123, Unknown=5, NotChecked=130, Total=306 [2023-08-30 10:02:19,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 452 [2023-08-30 10:02:19,014 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 20 transitions, 116 flow. Second operand has 18 states, 18 states have (on average 168.16666666666666) internal successors, (3027), 18 states have internal predecessors, (3027), 0 states have call successors, (0), 0 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 10:02:19,014 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:02:19,014 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 452 [2023-08-30 10:02:19,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:02:19,210 INFO L130 PetriNetUnfolder]: 11/57 cut-off events. [2023-08-30 10:02:19,211 INFO L131 PetriNetUnfolder]: For 81/81 co-relation queries the response was YES. [2023-08-30 10:02:19,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 57 events. 11/57 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 149 event pairs, 4 based on Foata normal form. 2/58 useless extension candidates. Maximal degree in co-relation 188. Up to 21 conditions per place. [2023-08-30 10:02:19,211 INFO L137 encePairwiseOnDemand]: 447/452 looper letters, 12 selfloop transitions, 4 changer transitions 3/21 dead transitions. [2023-08-30 10:02:19,212 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 21 transitions, 147 flow [2023-08-30 10:02:19,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 10:02:19,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 10:02:19,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1014 transitions. [2023-08-30 10:02:19,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37389380530973454 [2023-08-30 10:02:19,216 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1014 transitions. [2023-08-30 10:02:19,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1014 transitions. [2023-08-30 10:02:19,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:02:19,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1014 transitions. [2023-08-30 10:02:19,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 169.0) internal successors, (1014), 6 states have internal predecessors, (1014), 0 states have call successors, (0), 0 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 10:02:19,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 452.0) internal successors, (3164), 7 states have internal predecessors, (3164), 0 states have call successors, (0), 0 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 10:02:19,224 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 452.0) internal successors, (3164), 7 states have internal predecessors, (3164), 0 states have call successors, (0), 0 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 10:02:19,224 INFO L175 Difference]: Start difference. First operand has 39 places, 20 transitions, 116 flow. Second operand 6 states and 1014 transitions. [2023-08-30 10:02:19,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 21 transitions, 147 flow [2023-08-30 10:02:19,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 21 transitions, 129 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-08-30 10:02:19,226 INFO L231 Difference]: Finished difference. Result has 35 places, 15 transitions, 72 flow [2023-08-30 10:02:19,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=452, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=72, PETRI_PLACES=35, PETRI_TRANSITIONS=15} [2023-08-30 10:02:19,227 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -37 predicate places. [2023-08-30 10:02:19,227 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 15 transitions, 72 flow [2023-08-30 10:02:19,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 168.16666666666666) internal successors, (3027), 18 states have internal predecessors, (3027), 0 states have call successors, (0), 0 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 10:02:19,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:02:19,230 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:02:19,239 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 10:02:19,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:02:19,436 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t1_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t1_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-08-30 10:02:19,436 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:02:19,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1060078276, now seen corresponding path program 1 times [2023-08-30 10:02:19,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:02:19,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571186306] [2023-08-30 10:02:19,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:02:19,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:02:19,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:02:19,699 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 10:02:19,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:02:19,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571186306] [2023-08-30 10:02:19,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571186306] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:02:19,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300633190] [2023-08-30 10:02:19,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:02:19,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:02:19,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:02:19,705 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 10:02:19,713 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 10:02:19,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:02:19,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-30 10:02:19,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:02:19,814 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:02:19,814 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 10:02:19,893 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 10:02:19,927 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 10:02:19,945 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 10:02:19,946 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:02:19,964 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_149 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1_ids~0#1.base| v_ArrVal_149) |c_t1_funThread1of1ForFork0_munge_~v#1.base|) |c_t1_funThread1of1ForFork0_munge_~v#1.offset|) 2147483649)) is different from false [2023-08-30 10:02:19,978 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:02:19,979 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 1 case distinctions, treesize of input 18 treesize of output 19 [2023-08-30 10:02:19,983 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 31 treesize of output 23 [2023-08-30 10:02:20,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-30 10:02:20,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300633190] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:02:20,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:02:20,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 16 [2023-08-30 10:02:20,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238522767] [2023-08-30 10:02:20,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:02:20,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 10:02:20,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:02:20,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 10:02:20,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=224, Unknown=1, NotChecked=30, Total=306 [2023-08-30 10:02:20,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 452 [2023-08-30 10:02:20,140 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 15 transitions, 72 flow. Second operand has 18 states, 18 states have (on average 163.16666666666666) internal successors, (2937), 18 states have internal predecessors, (2937), 0 states have call successors, (0), 0 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 10:02:20,140 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:02:20,140 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 452 [2023-08-30 10:02:20,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:02:20,471 INFO L130 PetriNetUnfolder]: 10/55 cut-off events. [2023-08-30 10:02:20,471 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-08-30 10:02:20,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184 conditions, 55 events. 10/55 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 146 event pairs, 4 based on Foata normal form. 2/57 useless extension candidates. Maximal degree in co-relation 173. Up to 11 conditions per place. [2023-08-30 10:02:20,472 INFO L137 encePairwiseOnDemand]: 446/452 looper letters, 0 selfloop transitions, 0 changer transitions 32/32 dead transitions. [2023-08-30 10:02:20,472 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 32 transitions, 207 flow [2023-08-30 10:02:20,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 10:02:20,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 10:02:20,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2125 transitions. [2023-08-30 10:02:20,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.361640571817563 [2023-08-30 10:02:20,479 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2125 transitions. [2023-08-30 10:02:20,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2125 transitions. [2023-08-30 10:02:20,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:02:20,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2125 transitions. [2023-08-30 10:02:20,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 163.46153846153845) internal successors, (2125), 13 states have internal predecessors, (2125), 0 states have call successors, (0), 0 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 10:02:20,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 452.0) internal successors, (6328), 14 states have internal predecessors, (6328), 0 states have call successors, (0), 0 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 10:02:20,494 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 452.0) internal successors, (6328), 14 states have internal predecessors, (6328), 0 states have call successors, (0), 0 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 10:02:20,494 INFO L175 Difference]: Start difference. First operand has 35 places, 15 transitions, 72 flow. Second operand 13 states and 2125 transitions. [2023-08-30 10:02:20,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 32 transitions, 207 flow [2023-08-30 10:02:20,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 32 transitions, 159 flow, removed 0 selfloop flow, removed 11 redundant places. [2023-08-30 10:02:20,495 INFO L231 Difference]: Finished difference. Result has 35 places, 0 transitions, 0 flow [2023-08-30 10:02:20,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=452, PETRI_DIFFERENCE_MINUEND_FLOW=45, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=0, PETRI_PLACES=35, PETRI_TRANSITIONS=0} [2023-08-30 10:02:20,496 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -37 predicate places. [2023-08-30 10:02:20,496 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 0 transitions, 0 flow [2023-08-30 10:02:20,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 163.16666666666666) internal successors, (2937), 18 states have internal predecessors, (2937), 0 states have call successors, (0), 0 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 10:02:20,500 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 24 remaining) [2023-08-30 10:02:20,500 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 24 remaining) [2023-08-30 10:02:20,500 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 24 remaining) [2023-08-30 10:02:20,501 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 24 remaining) [2023-08-30 10:02:20,501 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 24 remaining) [2023-08-30 10:02:20,501 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 24 remaining) [2023-08-30 10:02:20,501 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 24 remaining) [2023-08-30 10:02:20,501 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 24 remaining) [2023-08-30 10:02:20,501 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 24 remaining) [2023-08-30 10:02:20,502 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 24 remaining) [2023-08-30 10:02:20,502 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 24 remaining) [2023-08-30 10:02:20,502 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 24 remaining) [2023-08-30 10:02:20,502 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 24 remaining) [2023-08-30 10:02:20,502 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 24 remaining) [2023-08-30 10:02:20,503 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 24 remaining) [2023-08-30 10:02:20,505 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 24 remaining) [2023-08-30 10:02:20,505 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 24 remaining) [2023-08-30 10:02:20,505 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 24 remaining) [2023-08-30 10:02:20,505 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 24 remaining) [2023-08-30 10:02:20,505 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 24 remaining) [2023-08-30 10:02:20,505 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 24 remaining) [2023-08-30 10:02:20,506 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 24 remaining) [2023-08-30 10:02:20,506 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 24 remaining) [2023-08-30 10:02:20,506 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 24 remaining) [2023-08-30 10:02:20,516 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 10:02:20,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:02:20,711 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:02:20,713 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-30 10:02:20,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 220 places, 247 transitions, 516 flow [2023-08-30 10:02:20,765 INFO L130 PetriNetUnfolder]: 58/439 cut-off events. [2023-08-30 10:02:20,765 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-30 10:02:20,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 459 conditions, 439 events. 58/439 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1913 event pairs, 0 based on Foata normal form. 0/345 useless extension candidates. Maximal degree in co-relation 233. Up to 8 conditions per place. [2023-08-30 10:02:20,769 INFO L82 GeneralOperation]: Start removeDead. Operand has 220 places, 247 transitions, 516 flow [2023-08-30 10:02:20,772 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 220 places, 247 transitions, 516 flow [2023-08-30 10:02:20,772 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:02:20,772 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 220 places, 247 transitions, 516 flow [2023-08-30 10:02:20,772 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 220 places, 247 transitions, 516 flow [2023-08-30 10:02:20,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 220 places, 247 transitions, 516 flow [2023-08-30 10:02:20,816 INFO L130 PetriNetUnfolder]: 58/439 cut-off events. [2023-08-30 10:02:20,816 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-30 10:02:20,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 459 conditions, 439 events. 58/439 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1913 event pairs, 0 based on Foata normal form. 0/345 useless extension candidates. Maximal degree in co-relation 233. Up to 8 conditions per place. [2023-08-30 10:02:20,834 INFO L119 LiptonReduction]: Number of co-enabled transitions 25704 [2023-08-30 10:02:25,130 INFO L134 LiptonReduction]: Checked pairs total: 43967 [2023-08-30 10:02:25,131 INFO L136 LiptonReduction]: Total number of compositions: 204 [2023-08-30 10:02:25,132 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-30 10:02:25,133 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;@172b2baf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:02:25,133 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-30 10:02:25,136 INFO L130 PetriNetUnfolder]: 3/30 cut-off events. [2023-08-30 10:02:25,136 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:02:25,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:02:25,137 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-30 10:02:25,137 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 10:02:25,137 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:02:25,137 INFO L85 PathProgramCache]: Analyzing trace with hash 975535099, now seen corresponding path program 1 times [2023-08-30 10:02:25,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:02:25,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122240707] [2023-08-30 10:02:25,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:02:25,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:02:25,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 10:02:25,151 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 10:02:25,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 10:02:25,170 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 10:02:25,170 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 10:02:25,171 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-30 10:02:25,171 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-30 10:02:25,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 10:02:25,171 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-30 10:02:25,172 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (2/2) [2023-08-30 10:02:25,172 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 10:02:25,173 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 10:02:25,211 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-30 10:02:25,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 338 places, 389 transitions, 826 flow [2023-08-30 10:02:25,405 INFO L130 PetriNetUnfolder]: 197/1313 cut-off events. [2023-08-30 10:02:25,405 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2023-08-30 10:02:25,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1410 conditions, 1313 events. 197/1313 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 8149 event pairs, 1 based on Foata normal form. 0/1021 useless extension candidates. Maximal degree in co-relation 780. Up to 32 conditions per place. [2023-08-30 10:02:25,431 INFO L82 GeneralOperation]: Start removeDead. Operand has 338 places, 389 transitions, 826 flow [2023-08-30 10:02:25,447 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 338 places, 389 transitions, 826 flow [2023-08-30 10:02:25,447 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:02:25,447 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 338 places, 389 transitions, 826 flow [2023-08-30 10:02:25,448 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 338 places, 389 transitions, 826 flow [2023-08-30 10:02:25,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 338 places, 389 transitions, 826 flow [2023-08-30 10:02:25,634 INFO L130 PetriNetUnfolder]: 197/1313 cut-off events. [2023-08-30 10:02:25,635 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2023-08-30 10:02:25,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1410 conditions, 1313 events. 197/1313 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 8149 event pairs, 1 based on Foata normal form. 0/1021 useless extension candidates. Maximal degree in co-relation 780. Up to 32 conditions per place. [2023-08-30 10:02:25,736 INFO L119 LiptonReduction]: Number of co-enabled transitions 91120 [2023-08-30 10:02:31,108 INFO L134 LiptonReduction]: Checked pairs total: 177179 [2023-08-30 10:02:31,109 INFO L136 LiptonReduction]: Total number of compositions: 317 [2023-08-30 10:02:31,110 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 10:02:31,111 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;@172b2baf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:02:31,111 INFO L358 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2023-08-30 10:02:31,113 INFO L130 PetriNetUnfolder]: 0/11 cut-off events. [2023-08-30 10:02:31,113 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:02:31,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:02:31,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 10:02:31,114 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t1_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t1_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 29 more)] === [2023-08-30 10:02:31,114 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:02:31,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1945519036, now seen corresponding path program 1 times [2023-08-30 10:02:31,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:02:31,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957145693] [2023-08-30 10:02:31,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:02:31,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:02:31,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:02:31,139 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 10:02:31,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:02:31,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957145693] [2023-08-30 10:02:31,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957145693] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:02:31,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:02:31,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:02:31,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555390167] [2023-08-30 10:02:31,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:02:31,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:02:31,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:02:31,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:02:31,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:02:31,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 321 out of 706 [2023-08-30 10:02:31,152 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 165 transitions, 378 flow. Second operand has 3 states, 3 states have (on average 322.3333333333333) internal successors, (967), 3 states have internal predecessors, (967), 0 states have call successors, (0), 0 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 10:02:31,152 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:02:31,152 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 321 of 706 [2023-08-30 10:02:31,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand